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overflow: hidden; text-overflow: ellipsis; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }</style><div class="col-xs-12 clearfix"><div class="u-floatLeft"><h1 class="PageHeader-title u-m0x u-fs30">Dielectric Resonator Antenna</h1><div class="u-tcGrayDark">1,484 Followers</div><div class="u-tcGrayDark u-mt2x">Recent papers in <b>Dielectric Resonator Antenna</b></div></div></div></div></div></div><div class="TabbedNavigation"><div class="container"><div class="row"><div class="col-xs-12 clearfix"><ul class="nav u-m0x u-p0x list-inline u-displayFlex"><li class="active"><a href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Top Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna/MostCited">Most Cited Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna/MostDownloaded">Most Downloaded Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna/MostRecent">Newest Papers</a></li><li><a class="" href="https://www.academia.edu/People/Dielectric_Resonator_Antenna">People</a></li></ul></div><style type="text/css">ul.nav{flex-direction:row}@media(max-width: 567px){ul.nav{flex-direction:column}.TabbedNavigation li{max-width:100%}.TabbedNavigation li.active{background-color:var(--background-grey, #dddde2)}.TabbedNavigation li.active:before,.TabbedNavigation li.active:after{display:none}}</style></div></div></div><div class="container"><div class="row"><div class="col-xs-12"><div class="u-displayFlex"><div class="u-flexGrow1"><div class="works"><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_45572441" data-work_id="45572441" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/45572441/A_nested_square_shape_dielectric_resonator_for_microwave_band_antenna_applications">A nested square-shape dielectric resonator for microwave band antenna applications</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, a nested square-shape dielectric resonator (NSDR) has been designed and investigated for antenna applications in the microwave band. A solid square dielectric resonator (SSDR) was modified systematically by introducing... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_45572441" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, a nested square-shape dielectric resonator (NSDR) has been designed and investigated for antenna applications in the microwave band. A solid square dielectric resonator (SSDR) was modified systematically by introducing air-gap in the azimuth (ϕ-direction). By retaining the square shape of the dielectric resonator (DR), the well-known analysis tools can be applied to evaluate the performance of the NSDR. To validate the performance of the proposed NSDR in antenna applications, theoretical, simulation, and experimental analysis of the subject has been performed. A simple microstrip-line feeding source printed on the top of Rogers RO4003 grounded substrate was utilized without any external matching network. Unlike solid square DR, the proposed NSDR considerably improves the impedance bandwidth. The proposed antenna has been prototyped and experimentally validated. The antenna operates in the range of 12.34 GHz to 21.7 GHz which corresponds to 56% percentage bandwidth with peak realized gain 6.5 dB. The antenna has stable radiation characteristics in the broadside direction. A close agreement between simulation and experimental results confirms the improved performance of NSDR in antenna applications. Keywords: Dielectric resonator antenna Microwave band Nested square-shape dielectric Square-shape dielectric Wideband antenna This is an open access article under the CC BY-SA license.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/45572441" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="a9131ad8ca87b2895297a92676bf3528" rel="nofollow" data-download="{"attachment_id":66047541,"asset_id":45572441,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/66047541/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="163474776" href="https://independent.academia.edu/JournalIJECE">International Journal of Electrical and Computer Engineering (IJECE)</a><script data-card-contents-for-user="163474776" type="text/json">{"id":163474776,"first_name":"International Journal of Electrical and Computer Engineering","last_name":"(IJECE)","domain_name":"independent","page_name":"JournalIJECE","display_name":"International Journal of Electrical and Computer Engineering (IJECE)","profile_url":"https://independent.academia.edu/JournalIJECE?f_ri=91047","photo":"https://0.academia-photos.com/163474776/123357473/112705609/s65_international_journal_of_electrical_and_computer_engineering._ijece_.jpg"}</script></span></span></li><li class="js-paper-rank-work_45572441 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="45572441"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 45572441, container: ".js-paper-rank-work_45572441", }); 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$(".js-view-count[data-work-id=45572441]").text(description); $(".js-view-count-work_45572441").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_45572441").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="45572441"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">4</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="2345" rel="nofollow" href="https://www.academia.edu/Documents/in/Wireless_Communications">Wireless Communications</a>, <script data-card-contents-for-ri="2345" type="text/json">{"id":2345,"name":"Wireless Communications","url":"https://www.academia.edu/Documents/in/Wireless_Communications?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6203" rel="nofollow" href="https://www.academia.edu/Documents/in/Electronics_and_Telecommunication_Engineering">Electronics & Telecommunication Engineering</a>, <script data-card-contents-for-ri="6203" type="text/json">{"id":6203,"name":"Electronics \u0026 Telecommunication Engineering","url":"https://www.academia.edu/Documents/in/Electronics_and_Telecommunication_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1887546" rel="nofollow" href="https://www.academia.edu/Documents/in/Wideband_Antenna">Wideband Antenna</a><script data-card-contents-for-ri="1887546" type="text/json">{"id":1887546,"name":"Wideband Antenna","url":"https://www.academia.edu/Documents/in/Wideband_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=45572441]'), work: {"id":45572441,"title":"A nested square-shape dielectric resonator for microwave band antenna applications","created_at":"2021-03-17T23:24:41.933-07:00","url":"https://www.academia.edu/45572441/A_nested_square_shape_dielectric_resonator_for_microwave_band_antenna_applications?f_ri=91047","dom_id":"work_45572441","summary":"In this paper, a nested square-shape dielectric resonator (NSDR) has been designed and investigated for antenna applications in the microwave band. A solid square dielectric resonator (SSDR) was modified systematically by introducing air-gap in the azimuth (ϕ-direction). By retaining the square shape of the dielectric resonator (DR), the well-known analysis tools can be applied to evaluate the performance of the NSDR. To validate the performance of the proposed NSDR in antenna applications, theoretical, simulation, and experimental analysis of the subject has been performed. A simple microstrip-line feeding source printed on the top of Rogers RO4003 grounded substrate was utilized without any external matching network. Unlike solid square DR, the proposed NSDR considerably improves the impedance bandwidth. The proposed antenna has been prototyped and experimentally validated. The antenna operates in the range of 12.34 GHz to 21.7 GHz which corresponds to 56% percentage bandwidth with peak realized gain 6.5 dB. The antenna has stable radiation characteristics in the broadside direction. A close agreement between simulation and experimental results confirms the improved performance of NSDR in antenna applications. Keywords: Dielectric resonator antenna Microwave band Nested square-shape dielectric Square-shape dielectric Wideband antenna This is an open access article under the CC BY-SA license.","downloadable_attachments":[{"id":66047541,"asset_id":45572441,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":163474776,"first_name":"International Journal of Electrical and Computer Engineering","last_name":"(IJECE)","domain_name":"independent","page_name":"JournalIJECE","display_name":"International Journal of Electrical and Computer Engineering (IJECE)","profile_url":"https://independent.academia.edu/JournalIJECE?f_ri=91047","photo":"https://0.academia-photos.com/163474776/123357473/112705609/s65_international_journal_of_electrical_and_computer_engineering._ijece_.jpg"}],"research_interests":[{"id":2345,"name":"Wireless Communications","url":"https://www.academia.edu/Documents/in/Wireless_Communications?f_ri=91047","nofollow":true},{"id":6203,"name":"Electronics \u0026 Telecommunication Engineering","url":"https://www.academia.edu/Documents/in/Electronics_and_Telecommunication_Engineering?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":1887546,"name":"Wideband Antenna","url":"https://www.academia.edu/Documents/in/Wideband_Antenna?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_29530942" data-work_id="29530942" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/29530942/Ferrite_Tuned_Dual_Mode_Dielectric_Resonator_Filters">Ferrite Tuned Dual-Mode Dielectric Resonator Filters</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">This paper is devoted to the design and construction of a novel technique for ferrite tuning of dielectric loaded, dual-mode cavity filters. This is dealt with in two specific areas: i) Improving the technique to realize a high -Q , low... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_29530942" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">This paper is devoted to the design and construction of a novel technique for ferrite tuning of dielectric loaded, dual-mode cavity filters. This is dealt with in two specific areas: i) Improving the technique to realize a high -Q , low loss, dielectric-loaded, dual-mode cavity band-pass filter, using the hybrid 11 HEM δ mode, ii) Developing techniques to obtain a wide range tuning mechanism, using ferrite materials. The designed dual-mode filters offer unloaded u Q of more than 10,000 with an insertion loss less than 1 dB. It is shown that ferrite tuning is possible either at below resonance or at the above resonance state, depending upon the strength of the applied DC magnetic field. Experimental results showed that due to its lower saturation magnetization YIG offers a wider tuning range compared with Nickel ferrite.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/29530942" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="20158688fe6d45f474cd2d1ad9d3572c" rel="nofollow" data-download="{"attachment_id":49972847,"asset_id":29530942,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/49972847/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="2601510" href="https://independent.academia.edu/MohammadNaserMoghadasi">Mohammad Naser-Moghadasi</a><script data-card-contents-for-user="2601510" type="text/json">{"id":2601510,"first_name":"Mohammad","last_name":"Naser-Moghadasi","domain_name":"independent","page_name":"MohammadNaserMoghadasi","display_name":"Mohammad Naser-Moghadasi","profile_url":"https://independent.academia.edu/MohammadNaserMoghadasi?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_29530942 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="29530942"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 29530942, container: ".js-paper-rank-work_29530942", }); 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$(".js-view-count[data-work-id=29530942]").text(description); $(".js-view-count-work_29530942").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_29530942").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="29530942"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">8</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="34754" rel="nofollow" href="https://www.academia.edu/Documents/in/Magnetic_field">Magnetic field</a>, <script data-card-contents-for-ri="34754" type="text/json">{"id":34754,"name":"Magnetic field","url":"https://www.academia.edu/Documents/in/Magnetic_field?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="194828" rel="nofollow" href="https://www.academia.edu/Documents/in/Nickel">Nickel</a>, <script data-card-contents-for-ri="194828" type="text/json">{"id":194828,"name":"Nickel","url":"https://www.academia.edu/Documents/in/Nickel?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="291387" rel="nofollow" href="https://www.academia.edu/Documents/in/Mathematical_Model">Mathematical Model</a><script data-card-contents-for-ri="291387" type="text/json">{"id":291387,"name":"Mathematical Model","url":"https://www.academia.edu/Documents/in/Mathematical_Model?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=29530942]'), work: {"id":29530942,"title":"Ferrite Tuned Dual-Mode Dielectric Resonator Filters","created_at":"2016-10-29T20:35:56.969-07:00","url":"https://www.academia.edu/29530942/Ferrite_Tuned_Dual_Mode_Dielectric_Resonator_Filters?f_ri=91047","dom_id":"work_29530942","summary":"This paper is devoted to the design and construction of a novel technique for ferrite tuning of dielectric loaded, dual-mode cavity filters. This is dealt with in two specific areas: i) Improving the technique to realize a high -Q , low loss, dielectric-loaded, dual-mode cavity band-pass filter, using the hybrid 11 HEM δ mode, ii) Developing techniques to obtain a wide range tuning mechanism, using ferrite materials. The designed dual-mode filters offer unloaded u Q of more than 10,000 with an insertion loss less than 1 dB. It is shown that ferrite tuning is possible either at below resonance or at the above resonance state, depending upon the strength of the applied DC magnetic field. Experimental results showed that due to its lower saturation magnetization YIG offers a wider tuning range compared with Nickel ferrite.","downloadable_attachments":[{"id":49972847,"asset_id":29530942,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":2601510,"first_name":"Mohammad","last_name":"Naser-Moghadasi","domain_name":"independent","page_name":"MohammadNaserMoghadasi","display_name":"Mohammad Naser-Moghadasi","profile_url":"https://independent.academia.edu/MohammadNaserMoghadasi?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":34754,"name":"Magnetic field","url":"https://www.academia.edu/Documents/in/Magnetic_field?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":194828,"name":"Nickel","url":"https://www.academia.edu/Documents/in/Nickel?f_ri=91047","nofollow":true},{"id":291387,"name":"Mathematical Model","url":"https://www.academia.edu/Documents/in/Mathematical_Model?f_ri=91047","nofollow":true},{"id":584964,"name":"Band Pass Filter","url":"https://www.academia.edu/Documents/in/Band_Pass_Filter?f_ri=91047"},{"id":1115582,"name":"Insertion Loss","url":"https://www.academia.edu/Documents/in/Insertion_Loss?f_ri=91047"},{"id":1980640,"name":"State dependence","url":"https://www.academia.edu/Documents/in/State_dependence?f_ri=91047"},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_11938752" data-work_id="11938752" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/11938752/Surface_resistance_measurements_of_HTS_thin_films_using_SLAO_dielectric_resonator">Surface resistance measurements of HTS thin films using SLAO dielectric resonator</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">surface resistance of HTS films is typically measured using Sapphire dielectric rod resonators enclosed in a copper cavity. In this paper we present surface resistance measurements of YBa 2 Cu 3 O 7-δ films using Strontium Lanthanum... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_11938752" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">surface resistance of HTS films is typically measured using Sapphire dielectric rod resonators enclosed in a copper cavity. In this paper we present surface resistance measurements of YBa 2 Cu 3 O 7-δ films using Strontium Lanthanum Aluminate (SLAO) at a resonant frequency of 18.2 GHz. We have performed the error analysis of the cavity loaded with SLAO dielectric rod and also verification measurements using two Sapphire (Al 2 O 3 ) rod resonators operating at resonant frequencies of 24.6 GHz and 10 GHz respectively. Good agreement between the values of Rs of two sets of YBa 2 Cu 3 O 7-δ films measured using the SLAO and the Sapphire dielectrics has been obtained after a frequency scaling of Rs was applied. Using different dielectric rods of the same size in the same cavity for measurements of Rs of HTS films it is feasible to do microwave characterization of the same films at differing frequencies.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/11938752" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="67453b7ec51349213f8966f0734976f9" rel="nofollow" data-download="{"attachment_id":46429329,"asset_id":11938752,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46429329/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="29585337" href="https://independent.academia.edu/MohanJacob">Mohan Jacob</a><script data-card-contents-for-user="29585337" type="text/json">{"id":29585337,"first_name":"Mohan","last_name":"Jacob","domain_name":"independent","page_name":"MohanJacob","display_name":"Mohan Jacob","profile_url":"https://independent.academia.edu/MohanJacob?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_11938752 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="11938752"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 11938752, container: ".js-paper-rank-work_11938752", }); });</script></li><li class="js-percentile-work_11938752 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 11938752; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_11938752"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_11938752 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="11938752"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 11938752; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=11938752]").text(description); $(".js-view-count-work_11938752").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_11938752").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="11938752"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">13</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="56" rel="nofollow" href="https://www.academia.edu/Documents/in/Materials_Engineering">Materials Engineering</a>, <script data-card-contents-for-ri="56" type="text/json">{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="505" rel="nofollow" href="https://www.academia.edu/Documents/in/Condensed_Matter_Physics">Condensed Matter Physics</a>, <script data-card-contents-for-ri="505" type="text/json">{"id":505,"name":"Condensed Matter Physics","url":"https://www.academia.edu/Documents/in/Condensed_Matter_Physics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="80692" rel="nofollow" href="https://www.academia.edu/Documents/in/Copper">Copper</a>, <script data-card-contents-for-ri="80692" type="text/json">{"id":80692,"name":"Copper","url":"https://www.academia.edu/Documents/in/Copper?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=11938752]'), work: {"id":11938752,"title":"Surface resistance measurements of HTS thin films using SLAO dielectric resonator","created_at":"2015-04-14T03:55:47.763-07:00","url":"https://www.academia.edu/11938752/Surface_resistance_measurements_of_HTS_thin_films_using_SLAO_dielectric_resonator?f_ri=91047","dom_id":"work_11938752","summary":"surface resistance of HTS films is typically measured using Sapphire dielectric rod resonators enclosed in a copper cavity. In this paper we present surface resistance measurements of YBa 2 Cu 3 O 7-δ films using Strontium Lanthanum Aluminate (SLAO) at a resonant frequency of 18.2 GHz. We have performed the error analysis of the cavity loaded with SLAO dielectric rod and also verification measurements using two Sapphire (Al 2 O 3 ) rod resonators operating at resonant frequencies of 24.6 GHz and 10 GHz respectively. Good agreement between the values of Rs of two sets of YBa 2 Cu 3 O 7-δ films measured using the SLAO and the Sapphire dielectrics has been obtained after a frequency scaling of Rs was applied. Using different dielectric rods of the same size in the same cavity for measurements of Rs of HTS films it is feasible to do microwave characterization of the same films at differing frequencies.","downloadable_attachments":[{"id":46429329,"asset_id":11938752,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":29585337,"first_name":"Mohan","last_name":"Jacob","domain_name":"independent","page_name":"MohanJacob","display_name":"Mohan Jacob","profile_url":"https://independent.academia.edu/MohanJacob?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true},{"id":505,"name":"Condensed Matter Physics","url":"https://www.academia.edu/Documents/in/Condensed_Matter_Physics?f_ri=91047","nofollow":true},{"id":80692,"name":"Copper","url":"https://www.academia.edu/Documents/in/Copper?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":96502,"name":"Applied","url":"https://www.academia.edu/Documents/in/Applied?f_ri=91047"},{"id":101573,"name":"Thin Film","url":"https://www.academia.edu/Documents/in/Thin_Film?f_ri=91047"},{"id":152918,"name":"Error Analysis","url":"https://www.academia.edu/Documents/in/Error_Analysis?f_ri=91047"},{"id":432477,"name":"Resonator","url":"https://www.academia.edu/Documents/in/Resonator?f_ri=91047"},{"id":756983,"name":"Surface Resistance","url":"https://www.academia.edu/Documents/in/Surface_Resistance?f_ri=91047"},{"id":1201891,"name":"Dielectric Materials","url":"https://www.academia.edu/Documents/in/Dielectric_Materials?f_ri=91047"},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"},{"id":1277752,"name":"Resonance Frequency","url":"https://www.academia.edu/Documents/in/Resonance_Frequency?f_ri=91047"},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_56564700" data-work_id="56564700" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/56564700/Measurements_of_the_surface_resistance_and_conductivity_of_thin_conductive_films_at_frequencies_near_1_GHz_employing_the_dielectric_resonator_technique">Measurements of the surface resistance and conductivity of thin conductive films at frequencies near 1 GHz employing the dielectric resonator technique</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A dielectric resonator technique has been developed for measurements of conductivity and surface resistance of thin metal films deposited on a dielectric substrate. This technique allows for measurements of films having surface... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_56564700" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A dielectric resonator technique has been developed for measurements of conductivity and surface resistance of thin metal films deposited on a dielectric substrate. This technique allows for measurements of films having surface resistances that are smaller than 5 without requiring the need to perform measurements of the substrate thickness. The uncertainty of the surface resistance measurements is about 2-3% for both thin films and bulk materials. The accuracy of the conductivity measurements of the thin films is similar to the accuracy of the measurements of their thickness. Several samples have been measured having thicknesses that range from 66 nm to 50 m.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/56564700" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c98aba02134a47d81ecbe55d32020439" rel="nofollow" data-download="{"attachment_id":71890107,"asset_id":56564700,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/71890107/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="19585927" href="https://independent.academia.edu/JerzyKrupka">Jerzy Krupka</a><script data-card-contents-for-user="19585927" type="text/json">{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}</script></span></span></li><li class="js-paper-rank-work_56564700 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="56564700"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 56564700, container: ".js-paper-rank-work_56564700", }); });</script></li><li class="js-percentile-work_56564700 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 56564700; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_56564700"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_56564700 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="56564700"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 56564700; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=56564700]").text(description); $(".js-view-count-work_56564700").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_56564700").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="56564700"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">8</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="56" rel="nofollow" href="https://www.academia.edu/Documents/in/Materials_Engineering">Materials Engineering</a>, <script data-card-contents-for-ri="56" type="text/json">{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="11678" rel="nofollow" href="https://www.academia.edu/Documents/in/Nanocomposites">Nanocomposites</a>, <script data-card-contents-for-ri="11678" type="text/json">{"id":11678,"name":"Nanocomposites","url":"https://www.academia.edu/Documents/in/Nanocomposites?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="101573" rel="nofollow" href="https://www.academia.edu/Documents/in/Thin_Film">Thin Film</a><script data-card-contents-for-ri="101573" type="text/json">{"id":101573,"name":"Thin Film","url":"https://www.academia.edu/Documents/in/Thin_Film?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=56564700]'), work: {"id":56564700,"title":"Measurements of the surface resistance and conductivity of thin conductive films at frequencies near 1 GHz employing the dielectric resonator technique","created_at":"2021-10-08T06:59:06.991-07:00","url":"https://www.academia.edu/56564700/Measurements_of_the_surface_resistance_and_conductivity_of_thin_conductive_films_at_frequencies_near_1_GHz_employing_the_dielectric_resonator_technique?f_ri=91047","dom_id":"work_56564700","summary":"A dielectric resonator technique has been developed for measurements of conductivity and surface resistance of thin metal films deposited on a dielectric substrate. This technique allows for measurements of films having surface resistances that are smaller than 5 without requiring the need to perform measurements of the substrate thickness. The uncertainty of the surface resistance measurements is about 2-3% for both thin films and bulk materials. The accuracy of the conductivity measurements of the thin films is similar to the accuracy of the measurements of their thickness. Several samples have been measured having thicknesses that range from 66 nm to 50 m.","downloadable_attachments":[{"id":71890107,"asset_id":56564700,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}],"research_interests":[{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true},{"id":11678,"name":"Nanocomposites","url":"https://www.academia.edu/Documents/in/Nanocomposites?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":101573,"name":"Thin Film","url":"https://www.academia.edu/Documents/in/Thin_Film?f_ri=91047","nofollow":true},{"id":390049,"name":"Electrical Conductivity","url":"https://www.academia.edu/Documents/in/Electrical_Conductivity?f_ri=91047"},{"id":910840,"name":"Non Destructive Evaluation","url":"https://www.academia.edu/Documents/in/Non_Destructive_Evaluation?f_ri=91047"},{"id":1202042,"name":"Electric Conductivity","url":"https://www.academia.edu/Documents/in/Electric_Conductivity?f_ri=91047"},{"id":1372214,"name":"Performance Measure","url":"https://www.academia.edu/Documents/in/Performance_Measure?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_2331370" data-work_id="2331370" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/2331370/Hybrid_Dielectric_Resonator_Antenna_With_Circular_Mushroom_Like_Structure_for_Gain_Improvement">Hybrid Dielectric Resonator Antenna With Circular Mushroom-Like Structure for Gain Improvement</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, the performance of a cylindrical dielectric resonator antenna (DRA) is improved using a new cylindrical electromagnetic bandgap substrate. The DRA is fed by a coaxial probe and integrated within a cylindrical... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_2331370" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, the performance of a cylindrical dielectric resonator antenna (DRA) is improved using a new cylindrical electromagnetic bandgap substrate. The DRA is fed by a coaxial probe and integrated within a cylindrical electromagnetic bandgap (EBG) substrate to increase the antenna gain. The cylindrical electromagnetic bandgap structure is composed of two distinctive periodic structures. The first structure is made of metallic rings, while the second is formed of grounding vias, which are placed radially and circularly. To describe and optimize this EBG stucture, a parametric study using a finite integration method was carried out. Furthermore, an antenna prototype was fabricated and measured to validate the proposed concept. The radiation patterns and return loss obtained from measurements demonstrate a good performance in terms of impedance matching and gain enhancement.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/2331370" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="6c7cfb4b0330f25c76a2927ef1153fad" rel="nofollow" data-download="{"attachment_id":50668978,"asset_id":2331370,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50668978/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="2967602" href="https://du-in.academia.edu/ShailendraSingh">Shailendra Singh</a><script data-card-contents-for-user="2967602" type="text/json">{"id":2967602,"first_name":"Shailendra","last_name":"Singh","domain_name":"du-in","page_name":"ShailendraSingh","display_name":"Shailendra Singh","profile_url":"https://du-in.academia.edu/ShailendraSingh?f_ri=91047","photo":"https://0.academia-photos.com/2967602/979975/1226408/s65_shailendra.singh.jpg"}</script></span></span></li><li class="js-paper-rank-work_2331370 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="2331370"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 2331370, container: ".js-paper-rank-work_2331370", }); });</script></li><li class="js-percentile-work_2331370 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 2331370; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_2331370"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_2331370 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="2331370"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 2331370; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=2331370]").text(description); $(".js-view-count-work_2331370").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_2331370").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="2331370"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">14</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="10018" rel="nofollow" href="https://www.academia.edu/Documents/in/Metamaterials">Metamaterials</a>, <script data-card-contents-for-ri="10018" type="text/json">{"id":10018,"name":"Metamaterials","url":"https://www.academia.edu/Documents/in/Metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="123664" rel="nofollow" href="https://www.academia.edu/Documents/in/Photonic_Crystal">Photonic Crystal</a>, <script data-card-contents-for-ri="123664" type="text/json">{"id":123664,"name":"Photonic Crystal","url":"https://www.academia.edu/Documents/in/Photonic_Crystal?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="153400" rel="nofollow" href="https://www.academia.edu/Documents/in/Impedance_Matching">Impedance Matching</a><script data-card-contents-for-ri="153400" type="text/json">{"id":153400,"name":"Impedance Matching","url":"https://www.academia.edu/Documents/in/Impedance_Matching?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=2331370]'), work: {"id":2331370,"title":"Hybrid Dielectric Resonator Antenna With Circular Mushroom-Like Structure for Gain Improvement","created_at":"2012-12-26T19:06:37.394-08:00","url":"https://www.academia.edu/2331370/Hybrid_Dielectric_Resonator_Antenna_With_Circular_Mushroom_Like_Structure_for_Gain_Improvement?f_ri=91047","dom_id":"work_2331370","summary":"In this paper, the performance of a cylindrical dielectric resonator antenna (DRA) is improved using a new cylindrical electromagnetic bandgap substrate. The DRA is fed by a coaxial probe and integrated within a cylindrical electromagnetic bandgap (EBG) substrate to increase the antenna gain. The cylindrical electromagnetic bandgap structure is composed of two distinctive periodic structures. The first structure is made of metallic rings, while the second is formed of grounding vias, which are placed radially and circularly. To describe and optimize this EBG stucture, a parametric study using a finite integration method was carried out. Furthermore, an antenna prototype was fabricated and measured to validate the proposed concept. The radiation patterns and return loss obtained from measurements demonstrate a good performance in terms of impedance matching and gain enhancement.","downloadable_attachments":[{"id":50668978,"asset_id":2331370,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":2967602,"first_name":"Shailendra","last_name":"Singh","domain_name":"du-in","page_name":"ShailendraSingh","display_name":"Shailendra Singh","profile_url":"https://du-in.academia.edu/ShailendraSingh?f_ri=91047","photo":"https://0.academia-photos.com/2967602/979975/1226408/s65_shailendra.singh.jpg"}],"research_interests":[{"id":10018,"name":"Metamaterials","url":"https://www.academia.edu/Documents/in/Metamaterials?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":123664,"name":"Photonic Crystal","url":"https://www.academia.edu/Documents/in/Photonic_Crystal?f_ri=91047","nofollow":true},{"id":153400,"name":"Impedance Matching","url":"https://www.academia.edu/Documents/in/Impedance_Matching?f_ri=91047","nofollow":true},{"id":317235,"name":"Grounding","url":"https://www.academia.edu/Documents/in/Grounding?f_ri=91047"},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"},{"id":1333908,"name":"Radiation Patterns","url":"https://www.academia.edu/Documents/in/Radiation_Patterns?f_ri=91047"},{"id":1412340,"name":"Prototype","url":"https://www.academia.edu/Documents/in/Prototype?f_ri=91047"},{"id":1655769,"name":"Radiation Pattern","url":"https://www.academia.edu/Documents/in/Radiation_Pattern?f_ri=91047"},{"id":1691237,"name":"Antenna measurements","url":"https://www.academia.edu/Documents/in/Antenna_measurements?f_ri=91047"},{"id":1766101,"name":"Return Loss","url":"https://www.academia.edu/Documents/in/Return_Loss?f_ri=91047"},{"id":1769725,"name":"Parametric analysis","url":"https://www.academia.edu/Documents/in/Parametric_analysis?f_ri=91047"},{"id":2003399,"name":"Parametric Study","url":"https://www.academia.edu/Documents/in/Parametric_Study?f_ri=91047"},{"id":2233778,"name":"Antenna Gain","url":"https://www.academia.edu/Documents/in/Antenna_Gain?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_47921326" data-work_id="47921326" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/47921326/Experimental_investigation_for_wideband_perforated_dielectric_resonator_antenna">Experimental investigation for wideband perforated dielectric resonator antenna</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A wideband perforated dielectric resonator antenna (PDRA) is presented. The effective permittivity of the dielectric resonator is altered by drilling holes into a circular ring lattice inside the DRA. The PDRA is equivalent of having an... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_47921326" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A wideband perforated dielectric resonator antenna (PDRA) is presented. The effective permittivity of the dielectric resonator is altered by drilling holes into a circular ring lattice inside the DRA. The PDRA is equivalent of having an annular ring with lower permittivity outside the cylindrical disk, resulting in enhanced impedance bandwidth. The measured bandwidth of a prototype PDRA with relative permittivity 10.2 is 26.7% (S 11 < À10 dB).</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/47921326" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="db815666345e407cb217d46de0f2a53e" rel="nofollow" data-download="{"attachment_id":66800655,"asset_id":47921326,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/66800655/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="40325006" href="https://independent.academia.edu/AhmedKishk1">Ahmed Kishk</a><script data-card-contents-for-user="40325006" type="text/json">{"id":40325006,"first_name":"Ahmed","last_name":"Kishk","domain_name":"independent","page_name":"AhmedKishk1","display_name":"Ahmed Kishk","profile_url":"https://independent.academia.edu/AhmedKishk1?f_ri=91047","photo":"https://0.academia-photos.com/40325006/85874079/74529723/s65_ahmed.kishk.jpeg"}</script></span></span></li><li class="js-paper-rank-work_47921326 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="47921326"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 47921326, container: ".js-paper-rank-work_47921326", }); });</script></li><li class="js-percentile-work_47921326 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 47921326; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_47921326"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_47921326 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="47921326"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 47921326; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=47921326]").text(description); $(".js-view-count-work_47921326").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_47921326").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="47921326"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">3</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1237788" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering">Electrical And Electronic Engineering</a>, <script data-card-contents-for-ri="1237788" type="text/json">{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1388091" rel="nofollow" href="https://www.academia.edu/Documents/in/Electronics_Letters">Electronics Letters</a><script data-card-contents-for-ri="1388091" type="text/json">{"id":1388091,"name":"Electronics Letters","url":"https://www.academia.edu/Documents/in/Electronics_Letters?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=47921326]'), work: {"id":47921326,"title":"Experimental investigation for wideband perforated dielectric resonator antenna","created_at":"2021-05-03T08:00:03.979-07:00","url":"https://www.academia.edu/47921326/Experimental_investigation_for_wideband_perforated_dielectric_resonator_antenna?f_ri=91047","dom_id":"work_47921326","summary":"A wideband perforated dielectric resonator antenna (PDRA) is presented. The effective permittivity of the dielectric resonator is altered by drilling holes into a circular ring lattice inside the DRA. The PDRA is equivalent of having an annular ring with lower permittivity outside the cylindrical disk, resulting in enhanced impedance bandwidth. The measured bandwidth of a prototype PDRA with relative permittivity 10.2 is 26.7% (S 11 \u003c À10 dB).","downloadable_attachments":[{"id":66800655,"asset_id":47921326,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":40325006,"first_name":"Ahmed","last_name":"Kishk","domain_name":"independent","page_name":"AhmedKishk1","display_name":"Ahmed Kishk","profile_url":"https://independent.academia.edu/AhmedKishk1?f_ri=91047","photo":"https://0.academia-photos.com/40325006/85874079/74529723/s65_ahmed.kishk.jpeg"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true},{"id":1388091,"name":"Electronics Letters","url":"https://www.academia.edu/Documents/in/Electronics_Letters?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_8901528" data-work_id="8901528" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/8901528/REVIEW_ARTICLE_Frequency_domain_complex_permittivity_measurements_at_microwave_frequencies">REVIEW ARTICLE: Frequency domain complex permittivity measurements at microwave frequencies</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Overview of frequency domain measurement techniques of the complex permittivity at microwave frequencies is presented. The methods are divided into two categories: resonant and non-resonant ones. In the first category several methods are... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_8901528" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Overview of frequency domain measurement techniques of the complex permittivity at microwave frequencies is presented. The methods are divided into two categories: resonant and non-resonant ones. In the first category several methods are discussed such as cavity resonator techniques, dielectric resonator techniques, open resonator techniques and resonators for non-destructive testing. The general theory of measurements of different materials in resonant structures is presented showing mathematical background, sources of uncertainties and theoretical and experimental limits. Methods of measurement of anisotropic materials are presented. In the second category, transmission-reflection techniques are overviewed including transmission line cells as well as free-space techniques.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8901528" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c81066c35c5f8cea906921186b42c1ba" rel="nofollow" data-download="{"attachment_id":47960557,"asset_id":8901528,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/47960557/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="19585927" href="https://independent.academia.edu/JerzyKrupka">Jerzy Krupka</a><script data-card-contents-for-user="19585927" type="text/json">{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}</script></span></span></li><li class="js-paper-rank-work_8901528 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="8901528"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 8901528, container: ".js-paper-rank-work_8901528", }); });</script></li><li class="js-percentile-work_8901528 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 8901528; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_8901528"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_8901528 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="8901528"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8901528; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=8901528]").text(description); $(".js-view-count-work_8901528").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_8901528").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="8901528"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">10</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="41009" rel="nofollow" href="https://www.academia.edu/Documents/in/Non_Destructive_Testing">Non Destructive Testing</a>, <script data-card-contents-for-ri="41009" type="text/json">{"id":41009,"name":"Non Destructive Testing","url":"https://www.academia.edu/Documents/in/Non_Destructive_Testing?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="71793" rel="nofollow" href="https://www.academia.edu/Documents/in/Measurement_Science_and_Technology">Measurement Science and Technology</a>, <script data-card-contents-for-ri="71793" type="text/json">{"id":71793,"name":"Measurement Science and Technology","url":"https://www.academia.edu/Documents/in/Measurement_Science_and_Technology?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=8901528]'), work: {"id":8901528,"title":"REVIEW ARTICLE: Frequency domain complex permittivity measurements at microwave frequencies","created_at":"2014-10-21T22:14:27.446-07:00","url":"https://www.academia.edu/8901528/REVIEW_ARTICLE_Frequency_domain_complex_permittivity_measurements_at_microwave_frequencies?f_ri=91047","dom_id":"work_8901528","summary":"Overview of frequency domain measurement techniques of the complex permittivity at microwave frequencies is presented. The methods are divided into two categories: resonant and non-resonant ones. In the first category several methods are discussed such as cavity resonator techniques, dielectric resonator techniques, open resonator techniques and resonators for non-destructive testing. The general theory of measurements of different materials in resonant structures is presented showing mathematical background, sources of uncertainties and theoretical and experimental limits. Methods of measurement of anisotropic materials are presented. In the second category, transmission-reflection techniques are overviewed including transmission line cells as well as free-space techniques.","downloadable_attachments":[{"id":47960557,"asset_id":8901528,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=91047","nofollow":true},{"id":41009,"name":"Non Destructive Testing","url":"https://www.academia.edu/Documents/in/Non_Destructive_Testing?f_ri=91047","nofollow":true},{"id":71793,"name":"Measurement Science and Technology","url":"https://www.academia.edu/Documents/in/Measurement_Science_and_Technology?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":118582,"name":"Physical sciences","url":"https://www.academia.edu/Documents/in/Physical_sciences?f_ri=91047"},{"id":389575,"name":"Dielectric Loss","url":"https://www.academia.edu/Documents/in/Dielectric_Loss?f_ri=91047"},{"id":636490,"name":"Transmission Line","url":"https://www.academia.edu/Documents/in/Transmission_Line?f_ri=91047"},{"id":1554801,"name":"Complex permittivity","url":"https://www.academia.edu/Documents/in/Complex_permittivity?f_ri=91047"},{"id":1554802,"name":"Microwave measurement","url":"https://www.academia.edu/Documents/in/Microwave_measurement?f_ri=91047"},{"id":1625072,"name":"Frequency Domain","url":"https://www.academia.edu/Documents/in/Frequency_Domain?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_21284975" data-work_id="21284975" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/21284975/3_5_GHz_rectangular_dielectric_resonator_antenna">3.5 GHz rectangular dielectric resonator antenna</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_21284975" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was used as the dielectric resonator as it offers more option to control the resonant frequency. The position of rectangular DR was varied to determine the best coupling and the distance was found to be 6 mm. The simulated results of the return loss, resonant frequency together with radiation pattern were compared with the measured results. It was found that rectangular DRA has potential to be used in wireless system.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/21284975" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="7c162ce6017d10101f7c287e583470d3" rel="nofollow" data-download="{"attachment_id":41798779,"asset_id":21284975,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/41798779/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="42402291" href="https://jazan.academia.edu/sdhutagalung">Sabar D Hutagalung</a><script data-card-contents-for-user="42402291" type="text/json">{"id":42402291,"first_name":"Sabar","last_name":"Hutagalung","domain_name":"jazan","page_name":"sdhutagalung","display_name":"Sabar D Hutagalung","profile_url":"https://jazan.academia.edu/sdhutagalung?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_21284975 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="21284975"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 21284975, container: ".js-paper-rank-work_21284975", }); });</script></li><li class="js-percentile-work_21284975 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 21284975; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_21284975"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_21284975 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="21284975"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 21284975; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=21284975]").text(description); $(".js-view-count-work_21284975").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_21284975").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="21284975"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="5766" rel="nofollow" href="https://www.academia.edu/Documents/in/Wireless_Systems">Wireless Systems</a>, <script data-card-contents-for-ri="5766" type="text/json">{"id":5766,"name":"Wireless Systems","url":"https://www.academia.edu/Documents/in/Wireless_Systems?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1250589" rel="nofollow" href="https://www.academia.edu/Documents/in/Microstrip_Line">Microstrip Line</a>, <script data-card-contents-for-ri="1250589" type="text/json">{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1655769" rel="nofollow" href="https://www.academia.edu/Documents/in/Radiation_Pattern">Radiation Pattern</a><script data-card-contents-for-ri="1655769" type="text/json">{"id":1655769,"name":"Radiation Pattern","url":"https://www.academia.edu/Documents/in/Radiation_Pattern?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=21284975]'), work: {"id":21284975,"title":"3.5 GHz rectangular dielectric resonator antenna","created_at":"2016-01-31T02:13:30.812-08:00","url":"https://www.academia.edu/21284975/3_5_GHz_rectangular_dielectric_resonator_antenna?f_ri=91047","dom_id":"work_21284975","summary":"In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was used as the dielectric resonator as it offers more option to control the resonant frequency. The position of rectangular DR was varied to determine the best coupling and the distance was found to be 6 mm. The simulated results of the return loss, resonant frequency together with radiation pattern were compared with the measured results. It was found that rectangular DRA has potential to be used in wireless system.","downloadable_attachments":[{"id":41798779,"asset_id":21284975,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":42402291,"first_name":"Sabar","last_name":"Hutagalung","domain_name":"jazan","page_name":"sdhutagalung","display_name":"Sabar D Hutagalung","profile_url":"https://jazan.academia.edu/sdhutagalung?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":5766,"name":"Wireless Systems","url":"https://www.academia.edu/Documents/in/Wireless_Systems?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047","nofollow":true},{"id":1655769,"name":"Radiation Pattern","url":"https://www.academia.edu/Documents/in/Radiation_Pattern?f_ri=91047","nofollow":true},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_37653088" data-work_id="37653088" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/37653088/Stacked_Conical_Cylindrical_Hybrid_Dielectric_Resonator_Antenna_for_Improved_Ultrawide_Bandwidth">Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">—Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_37653088" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">—Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The ultrawideband response is enhanced due to the multiple resonances occurring by the suggested hybrid antenna. The footprint area of the antenna is only 63.6 mm 2 or 25.44×10 −3 λ 2 o at the lowest operating frequency. The performance of the antenna is verified experimentally and numerically. Presented results show that the proposed hybrid monopole-DRA has a measured impedance bandwidth up to 148.6% (S 11 < −10 dB) along with consistent monopole-like radiation patterns and peak gain of 7.14 dBi. With such properties, the proposed hybrid monopole-DRA can be used in different ultra-wideband wireless applications and as wideband electromagnetic interference (EMI) sensors.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/37653088" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="227b0d943f5d190916611a4a68c5aa4e" rel="nofollow" data-download="{"attachment_id":57639933,"asset_id":37653088,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/57639933/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="27229527" href="https://uobasrah.academia.edu/AliNoaman">Ali A Al-Azza</a><script data-card-contents-for-user="27229527" type="text/json">{"id":27229527,"first_name":"Ali","last_name":"Al-Azza","domain_name":"uobasrah","page_name":"AliNoaman","display_name":"Ali A Al-Azza","profile_url":"https://uobasrah.academia.edu/AliNoaman?f_ri=91047","photo":"https://0.academia-photos.com/27229527/7722596/8659417/s65_ali.noaman.jpg_oh_62787e9e64f322f450cbb91f81353407_oe_557e0ef4___gda___1434148388_08a4e4cc7edf706e2d48e6c3ac0562f1"}</script></span></span></li><li class="js-paper-rank-work_37653088 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="37653088"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 37653088, container: ".js-paper-rank-work_37653088", }); });</script></li><li class="js-percentile-work_37653088 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 37653088; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_37653088"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_37653088 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="37653088"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 37653088; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=37653088]").text(description); $(".js-view-count-work_37653088").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_37653088").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="37653088"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i></div><span class="InlineList-item-text u-textTruncate u-pl6x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (false) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=37653088]'), work: {"id":37653088,"title":"Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth","created_at":"2018-10-26T05:38:13.311-07:00","url":"https://www.academia.edu/37653088/Stacked_Conical_Cylindrical_Hybrid_Dielectric_Resonator_Antenna_for_Improved_Ultrawide_Bandwidth?f_ri=91047","dom_id":"work_37653088","summary":"—Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The ultrawideband response is enhanced due to the multiple resonances occurring by the suggested hybrid antenna. The footprint area of the antenna is only 63.6 mm 2 or 25.44×10 −3 λ 2 o at the lowest operating frequency. The performance of the antenna is verified experimentally and numerically. Presented results show that the proposed hybrid monopole-DRA has a measured impedance bandwidth up to 148.6% (S 11 \u003c −10 dB) along with consistent monopole-like radiation patterns and peak gain of 7.14 dBi. With such properties, the proposed hybrid monopole-DRA can be used in different ultra-wideband wireless applications and as wideband electromagnetic interference (EMI) sensors.","downloadable_attachments":[{"id":57639933,"asset_id":37653088,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":27229527,"first_name":"Ali","last_name":"Al-Azza","domain_name":"uobasrah","page_name":"AliNoaman","display_name":"Ali A Al-Azza","profile_url":"https://uobasrah.academia.edu/AliNoaman?f_ri=91047","photo":"https://0.academia-photos.com/27229527/7722596/8659417/s65_ali.noaman.jpg_oh_62787e9e64f322f450cbb91f81353407_oe_557e0ef4___gda___1434148388_08a4e4cc7edf706e2d48e6c3ac0562f1"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_16347870" data-work_id="16347870" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/16347870/NINE_ELEMENT_FREQUENCY_INDEPENDENT_DIELECTRIC_RESONATOR_ARRAY_FOR_X_BAND_APPLICATIONS">NINE-ELEMENT FREQUENCY INDEPENDENT DIELECTRIC RESONATOR ARRAY FOR X-BAND APPLICATIONS</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A frequency independent dielectric resonator array (FIDRA) is designed and investigated experimentally for X-band applications. In this proposed array, nine rectangular shaped dielectric resonators are arranged in log periodic fashion to... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_16347870" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A frequency independent dielectric resonator array<br />(FIDRA) is designed and investigated experimentally for X-band<br />applications. In this proposed array, nine rectangular shaped dielectric<br />resonators are arranged in log periodic fashion to attain electrical<br />characteristics which will vary insignificantly with frequency over the<br />entire desired bandwidth. The resulted frequency independent array<br />offers up to 56% wider impedance bandwidth with a VSWR less than<br />two. The bandwidth achieved by proposed FIDRA covers a frequency<br />range 6.3–11.2 GHz which is the desired frequency range for X-band<br />applications in communication engineering.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/16347870" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="223517495e3f2f98cffe4bbb3ef7be28" rel="nofollow" data-download="{"attachment_id":38954346,"asset_id":16347870,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/38954346/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="35426981" href="https://nitrkl.academia.edu/SantanuKumarBehera">Dr Santanu Kumar Behera</a><script data-card-contents-for-user="35426981" type="text/json">{"id":35426981,"first_name":"Dr Santanu Kumar","last_name":"Behera","domain_name":"nitrkl","page_name":"SantanuKumarBehera","display_name":"Dr Santanu Kumar Behera","profile_url":"https://nitrkl.academia.edu/SantanuKumarBehera?f_ri=91047","photo":"https://0.academia-photos.com/35426981/10292777/11486047/s65_santanu_kumar.behera.jpg"}</script></span></span></li><li class="js-paper-rank-work_16347870 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="16347870"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 16347870, container: ".js-paper-rank-work_16347870", }); 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$(".js-view-count[data-work-id=16347870]").text(description); $(".js-view-count-work_16347870").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_16347870").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="16347870"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=16347870]'), work: {"id":16347870,"title":"NINE-ELEMENT FREQUENCY INDEPENDENT DIELECTRIC RESONATOR ARRAY FOR X-BAND APPLICATIONS","created_at":"2015-10-01T00:07:25.009-07:00","url":"https://www.academia.edu/16347870/NINE_ELEMENT_FREQUENCY_INDEPENDENT_DIELECTRIC_RESONATOR_ARRAY_FOR_X_BAND_APPLICATIONS?f_ri=91047","dom_id":"work_16347870","summary":"A frequency independent dielectric resonator array\n(FIDRA) is designed and investigated experimentally for X-band\napplications. In this proposed array, nine rectangular shaped dielectric\nresonators are arranged in log periodic fashion to attain electrical\ncharacteristics which will vary insignificantly with frequency over the\nentire desired bandwidth. The resulted frequency independent array\noffers up to 56% wider impedance bandwidth with a VSWR less than\ntwo. The bandwidth achieved by proposed FIDRA covers a frequency\nrange 6.3–11.2 GHz which is the desired frequency range for X-band\napplications in communication engineering.","downloadable_attachments":[{"id":38954346,"asset_id":16347870,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":35426981,"first_name":"Dr Santanu Kumar","last_name":"Behera","domain_name":"nitrkl","page_name":"SantanuKumarBehera","display_name":"Dr Santanu Kumar Behera","profile_url":"https://nitrkl.academia.edu/SantanuKumarBehera?f_ri=91047","photo":"https://0.academia-photos.com/35426981/10292777/11486047/s65_santanu_kumar.behera.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22987310" data-work_id="22987310" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22987310/MgWO4_ZnWO4_NiWO4_and_CoWO4_microwave_dielectric_ceramics">MgWO4 , ZnWO4 , NiWO4 and CoWO4 microwave dielectric ceramics</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">AWO4 (where A = Zn 2+ , Mg 2+ , Ni 2+ and Co 2+) tungstate ceramics were synthesised from a standard ceramic route, and their sintering behaviour and microwave dielectric properties were investigated. All AWO4 powders formed single-phase... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_22987310" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">AWO4 (where A = Zn 2+ , Mg 2+ , Ni 2+ and Co 2+) tungstate ceramics were synthesised from a standard ceramic route, and their sintering behaviour and microwave dielectric properties were investigated. All AWO4 powders formed single-phase materials, except MgWO4 , and they all had a wolframite-like monoclinic P2/c (13) structure, not the tetragonal scheelite structure found in CaWO4. MgWO4 had a poor Qf which deteriorated with further sintering, due to discontinuous grain growth at relatively low temperatures of 1000 • C and over. At higher temperatures, ZnWO4 , NiWO4 and CoWO4 have high Qf values at 1200 • C of 62,800, 24,900 and 38,600 GHz, respectively, which will all almost certainly be improved with firing at higher temperatures, particularly in the case of CoWO4. Although not at all well sintered, ZnWO4 and CoWO4 have high Qf values of 34,000 and 28,900 GHz, respectively, at temperatures below the LTCC limit.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/22987310" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="1b5755dc7dfc1154e71674c697360ad9" rel="nofollow" data-download="{"attachment_id":43504911,"asset_id":22987310,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43504911/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33248613" href="https://unive.academia.edu/RobertPullar">Robert C Pullar</a><script data-card-contents-for-user="33248613" type="text/json">{"id":33248613,"first_name":"Robert","last_name":"Pullar","domain_name":"unive","page_name":"RobertPullar","display_name":"Robert C Pullar","profile_url":"https://unive.academia.edu/RobertPullar?f_ri=91047","photo":"https://0.academia-photos.com/33248613/9850678/10979316/s65_robert.pullar.jpg"}</script></span></span></li><li class="js-paper-rank-work_22987310 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="22987310"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 22987310, container: ".js-paper-rank-work_22987310", }); 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$(".js-view-count[data-work-id=22987310]").text(description); $(".js-view-count-work_22987310").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_22987310").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="22987310"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">12</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="81618" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_resonators_for_microwave_applications">Dielectric resonators for microwave applications</a>, <script data-card-contents-for-ri="81618" type="text/json">{"id":81618,"name":"Dielectric resonators for microwave applications","url":"https://www.academia.edu/Documents/in/Dielectric_resonators_for_microwave_applications?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="139778" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectrics">Dielectrics</a>, <script data-card-contents-for-ri="139778" type="text/json">{"id":139778,"name":"Dielectrics","url":"https://www.academia.edu/Documents/in/Dielectrics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="161994" rel="nofollow" href="https://www.academia.edu/Documents/in/RF_Microwave_Power_Low_Noise_Amplifiers">RF/ Microwave Power/Low Noise Amplifiers</a><script data-card-contents-for-ri="161994" type="text/json">{"id":161994,"name":"RF/ Microwave Power/Low Noise Amplifiers","url":"https://www.academia.edu/Documents/in/RF_Microwave_Power_Low_Noise_Amplifiers?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=22987310]'), work: {"id":22987310,"title":"MgWO4 , ZnWO4 , NiWO4 and CoWO4 microwave dielectric ceramics","created_at":"2016-03-08T06:20:16.950-08:00","url":"https://www.academia.edu/22987310/MgWO4_ZnWO4_NiWO4_and_CoWO4_microwave_dielectric_ceramics?f_ri=91047","dom_id":"work_22987310","summary":"AWO4 (where A = Zn 2+ , Mg 2+ , Ni 2+ and Co 2+) tungstate ceramics were synthesised from a standard ceramic route, and their sintering behaviour and microwave dielectric properties were investigated. All AWO4 powders formed single-phase materials, except MgWO4 , and they all had a wolframite-like monoclinic P2/c (13) structure, not the tetragonal scheelite structure found in CaWO4. MgWO4 had a poor Qf which deteriorated with further sintering, due to discontinuous grain growth at relatively low temperatures of 1000 • C and over. At higher temperatures, ZnWO4 , NiWO4 and CoWO4 have high Qf values at 1200 • C of 62,800, 24,900 and 38,600 GHz, respectively, which will all almost certainly be improved with firing at higher temperatures, particularly in the case of CoWO4. Although not at all well sintered, ZnWO4 and CoWO4 have high Qf values of 34,000 and 28,900 GHz, respectively, at temperatures below the LTCC limit.","downloadable_attachments":[{"id":43504911,"asset_id":22987310,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33248613,"first_name":"Robert","last_name":"Pullar","domain_name":"unive","page_name":"RobertPullar","display_name":"Robert C Pullar","profile_url":"https://unive.academia.edu/RobertPullar?f_ri=91047","photo":"https://0.academia-photos.com/33248613/9850678/10979316/s65_robert.pullar.jpg"}],"research_interests":[{"id":81618,"name":"Dielectric resonators for microwave applications","url":"https://www.academia.edu/Documents/in/Dielectric_resonators_for_microwave_applications?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":139778,"name":"Dielectrics","url":"https://www.academia.edu/Documents/in/Dielectrics?f_ri=91047","nofollow":true},{"id":161994,"name":"RF/ Microwave Power/Low Noise Amplifiers","url":"https://www.academia.edu/Documents/in/RF_Microwave_Power_Low_Noise_Amplifiers?f_ri=91047","nofollow":true},{"id":186260,"name":"Dielectric Properties","url":"https://www.academia.edu/Documents/in/Dielectric_Properties?f_ri=91047"},{"id":255471,"name":"Microwave Measurements the dielectric properties of material at high temperature","url":"https://www.academia.edu/Documents/in/Microwave_Measurements_the_dielectric_properties_of_material_at_high_temperature?f_ri=91047"},{"id":623512,"name":"Dielectric Measurements","url":"https://www.academia.edu/Documents/in/Dielectric_Measurements?f_ri=91047"},{"id":644964,"name":"Dielectric ceramics","url":"https://www.academia.edu/Documents/in/Dielectric_ceramics?f_ri=91047"},{"id":725012,"name":"Dielectric Resonators","url":"https://www.academia.edu/Documents/in/Dielectric_Resonators?f_ri=91047"},{"id":960542,"name":"Tungstate","url":"https://www.academia.edu/Documents/in/Tungstate?f_ri=91047"},{"id":1136325,"name":"Microwave Dielectric Ceramics","url":"https://www.academia.edu/Documents/in/Microwave_Dielectric_Ceramics?f_ri=91047"},{"id":1186630,"name":"RF/microwave/millimeter-wave integrated circuits and systems","url":"https://www.academia.edu/Documents/in/RF_microwave_millimeter-wave_integrated_circuits_and_systems?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_8901529" data-work_id="8901529" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/8901529/Complex_permittivity_measurements_of_common_plastics_over_variable_temperatures">Complex permittivity measurements of common plastics over variable temperatures</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, we present complex permittivity data at microwave frequencies (approximately 10 GHz) for many common plastics over a temperature range of 122 to 375 K. The measurements were made with a TE 01 dielectric resonator placed... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_8901529" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, we present complex permittivity data at microwave frequencies (approximately 10 GHz) for many common plastics over a temperature range of 122 to 375 K. The measurements were made with a TE 01 dielectric resonator placed inside an environmental chamber. Data are presented for the following materials: acrylonitrile butadiene styrene, polytetrafluoroethylene, cross-linked polystyrene, tetrafluorethylene-perfluorpropylene, polypropylene, polysulfone, polymethylmethacrylate, polyvinyl chloride, polycarbonate, high-density polyethylene, polyoxy-methylene (acetal homopolymer), and polyamide.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8901529" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="abe30efd8b100b6a5a78042aacf45442" rel="nofollow" data-download="{"attachment_id":47960593,"asset_id":8901529,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/47960593/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="19585927" href="https://independent.academia.edu/JerzyKrupka">Jerzy Krupka</a><script data-card-contents-for-user="19585927" type="text/json">{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}</script></span></span></li><li class="js-paper-rank-work_8901529 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="8901529"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 8901529, container: ".js-paper-rank-work_8901529", }); });</script></li><li class="js-percentile-work_8901529 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 8901529; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_8901529"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_8901529 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="8901529"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8901529; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=8901529]").text(description); $(".js-view-count-work_8901529").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_8901529").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="8901529"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">11</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="104708" rel="nofollow" href="https://www.academia.edu/Documents/in/Plastics">Plastics</a>, <script data-card-contents-for-ri="104708" type="text/json">{"id":104708,"name":"Plastics","url":"https://www.academia.edu/Documents/in/Plastics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="168695" rel="nofollow" href="https://www.academia.edu/Documents/in/Polypropylene">Polypropylene</a>, <script data-card-contents-for-ri="168695" type="text/json">{"id":168695,"name":"Polypropylene","url":"https://www.academia.edu/Documents/in/Polypropylene?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="362622" rel="nofollow" href="https://www.academia.edu/Documents/in/Polyamide">Polyamide</a><script data-card-contents-for-ri="362622" type="text/json">{"id":362622,"name":"Polyamide","url":"https://www.academia.edu/Documents/in/Polyamide?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=8901529]'), work: {"id":8901529,"title":"Complex permittivity measurements of common plastics over variable temperatures","created_at":"2014-10-21T22:14:27.572-07:00","url":"https://www.academia.edu/8901529/Complex_permittivity_measurements_of_common_plastics_over_variable_temperatures?f_ri=91047","dom_id":"work_8901529","summary":"In this paper, we present complex permittivity data at microwave frequencies (approximately 10 GHz) for many common plastics over a temperature range of 122 to 375 K. The measurements were made with a TE 01 dielectric resonator placed inside an environmental chamber. Data are presented for the following materials: acrylonitrile butadiene styrene, polytetrafluoroethylene, cross-linked polystyrene, tetrafluorethylene-perfluorpropylene, polypropylene, polysulfone, polymethylmethacrylate, polyvinyl chloride, polycarbonate, high-density polyethylene, polyoxy-methylene (acetal homopolymer), and polyamide.","downloadable_attachments":[{"id":47960593,"asset_id":8901529,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":104708,"name":"Plastics","url":"https://www.academia.edu/Documents/in/Plastics?f_ri=91047","nofollow":true},{"id":168695,"name":"Polypropylene","url":"https://www.academia.edu/Documents/in/Polypropylene?f_ri=91047","nofollow":true},{"id":362622,"name":"Polyamide","url":"https://www.academia.edu/Documents/in/Polyamide?f_ri=91047","nofollow":true},{"id":686819,"name":"High Density Polyethylene","url":"https://www.academia.edu/Documents/in/High_Density_Polyethylene?f_ri=91047"},{"id":865728,"name":"ACRYLONITRILE BUTADIENE STYRENE","url":"https://www.academia.edu/Documents/in/ACRYLONITRILE_BUTADIENE_STYRENE?f_ri=91047"},{"id":911984,"name":"Polytetrafluoroethylene","url":"https://www.academia.edu/Documents/in/Polytetrafluoroethylene?f_ri=91047"},{"id":1201891,"name":"Dielectric Materials","url":"https://www.academia.edu/Documents/in/Dielectric_Materials?f_ri=91047"},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"},{"id":1554801,"name":"Complex permittivity","url":"https://www.academia.edu/Documents/in/Complex_permittivity?f_ri=91047"},{"id":1647408,"name":"Measurement Uncertainty","url":"https://www.academia.edu/Documents/in/Measurement_Uncertainty?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_73409018" data-work_id="73409018" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/73409018/Revolution_analysis_of_three_dimensional_arbitrary_cloaks">Revolution analysis of three-dimensional arbitrary cloaks</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">We extend the design of radially symmetric three-dimensional invisibility cloaks through transformation optics to cloaks with a surface of revolution. We derive the expression of the transformation matrix and show that one of its... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_73409018" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">We extend the design of radially symmetric three-dimensional invisibility cloaks through transformation optics to cloaks with a surface of revolution. We derive the expression of the transformation matrix and show that one of its eigenvalues vanishes on the inner boundary of the cloaks, while the other two remain strictly positive and bounded. The validity of our approach is confirmed by finite edge-elements computations for a non-convex cloak of varying thickness.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/73409018" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="5d13e6574d6ae22e3dcd1493ff30bb7e" rel="nofollow" data-download="{"attachment_id":81941622,"asset_id":73409018,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/81941622/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="34177590" href="https://independent.academia.edu/Fr%C3%A9d%C3%A9ricZolla">Frédéric Zolla</a><script data-card-contents-for-user="34177590" type="text/json">{"id":34177590,"first_name":"Frédéric","last_name":"Zolla","domain_name":"independent","page_name":"FrédéricZolla","display_name":"Frédéric Zolla","profile_url":"https://independent.academia.edu/Fr%C3%A9d%C3%A9ricZolla?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_73409018 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="73409018"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 73409018, container: ".js-paper-rank-work_73409018", }); 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$(".js-view-count[data-work-id=73409018]").text(description); $(".js-view-count-work_73409018").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_73409018").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="73409018"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">20</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="305" rel="nofollow" href="https://www.academia.edu/Documents/in/Applied_Mathematics">Applied Mathematics</a>, <script data-card-contents-for-ri="305" type="text/json">{"id":305,"name":"Applied Mathematics","url":"https://www.academia.edu/Documents/in/Applied_Mathematics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=73409018]'), work: {"id":73409018,"title":"Revolution analysis of three-dimensional arbitrary cloaks","created_at":"2022-03-09T08:15:15.441-08:00","url":"https://www.academia.edu/73409018/Revolution_analysis_of_three_dimensional_arbitrary_cloaks?f_ri=91047","dom_id":"work_73409018","summary":"We extend the design of radially symmetric three-dimensional invisibility cloaks through transformation optics to cloaks with a surface of revolution. We derive the expression of the transformation matrix and show that one of its eigenvalues vanishes on the inner boundary of the cloaks, while the other two remain strictly positive and bounded. The validity of our approach is confirmed by finite edge-elements computations for a non-convex cloak of varying thickness.","downloadable_attachments":[{"id":81941622,"asset_id":73409018,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34177590,"first_name":"Frédéric","last_name":"Zolla","domain_name":"independent","page_name":"FrédéricZolla","display_name":"Frédéric Zolla","profile_url":"https://independent.academia.edu/Fr%C3%A9d%C3%A9ricZolla?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":305,"name":"Applied Mathematics","url":"https://www.academia.edu/Documents/in/Applied_Mathematics?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic 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class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/7503699/Dielectric_resonator_oscillator_design_and_realization_at_4_25_GHz">Dielectric resonator oscillator design and realization at 4.25 GHz</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper design and realization of dielectric resonator oscillator operating 4.25 GHz is explained. The oscillator is designed as a negative resistance oscillator where chip-amplifier is used as the negative resistance by adding... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_7503699" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper design and realization of dielectric resonator oscillator operating 4.25 GHz is explained. The oscillator is designed as a negative resistance oscillator where chip-amplifier is used as the negative resistance by adding feedback. The dielectric resonator is simulated using High Frequency Structure Simulator. The simulation and realization results are discussed.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/7503699" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="55cd213801462dd040a48551e0a78d73" rel="nofollow" data-download="{"attachment_id":36262442,"asset_id":7503699,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/36262442/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="13417628" href="https://deu.academia.edu/%C5%9EebnemSe%C3%A7kinU%C4%9Furlu">Şebnem Seçkin Uğurlu</a><script data-card-contents-for-user="13417628" type="text/json">{"id":13417628,"first_name":"Şebnem","last_name":"Seçkin Uğurlu","domain_name":"deu","page_name":"ŞebnemSeçkinUğurlu","display_name":"Şebnem Seçkin Uğurlu","profile_url":"https://deu.academia.edu/%C5%9EebnemSe%C3%A7kinU%C4%9Furlu?f_ri=91047","photo":"https://0.academia-photos.com/13417628/3757964/4401290/s65__ebnem.se_kin_u_urlu.jpg"}</script></span></span></li><li class="js-paper-rank-work_7503699 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="7503699"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 7503699, container: ".js-paper-rank-work_7503699", }); });</script></li><li class="js-percentile-work_7503699 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 7503699; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_7503699"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_7503699 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="7503699"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 7503699; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=7503699]").text(description); $(".js-view-count-work_7503699").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_7503699").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="7503699"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i></div><span class="InlineList-item-text u-textTruncate u-pl6x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (false) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=7503699]'), work: {"id":7503699,"title":"Dielectric resonator oscillator design and realization at 4.25 GHz","created_at":"2014-06-29T22:41:04.444-07:00","url":"https://www.academia.edu/7503699/Dielectric_resonator_oscillator_design_and_realization_at_4_25_GHz?f_ri=91047","dom_id":"work_7503699","summary":"In this paper design and realization of dielectric resonator oscillator operating 4.25 GHz is explained. The oscillator is designed as a negative resistance oscillator where chip-amplifier is used as the negative resistance by adding feedback. The dielectric resonator is simulated using High Frequency Structure Simulator. The simulation and realization results are discussed.","downloadable_attachments":[{"id":36262442,"asset_id":7503699,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":13417628,"first_name":"Şebnem","last_name":"Seçkin Uğurlu","domain_name":"deu","page_name":"ŞebnemSeçkinUğurlu","display_name":"Şebnem Seçkin Uğurlu","profile_url":"https://deu.academia.edu/%C5%9EebnemSe%C3%A7kinU%C4%9Furlu?f_ri=91047","photo":"https://0.academia-photos.com/13417628/3757964/4401290/s65__ebnem.se_kin_u_urlu.jpg"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_11192078" data-work_id="11192078" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/11192078/3_5_GHz_rectangular_dielectric_resonator_antenna">3.5 GHz rectangular dielectric resonator antenna</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_11192078" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was used as the dielectric resonator as it offers more option to control the resonant frequency. The position of rectangular DR was varied to determine the best coupling and the distance was found to be 6 mm. The simulated results of the return loss, resonant frequency together with radiation pattern were compared with the measured results. It was found that rectangular DRA has potential to be used in wireless system.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/11192078" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="5dcc383ba82ec4fd476f778817202a55" rel="nofollow" data-download="{"attachment_id":46830594,"asset_id":11192078,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46830594/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="27032724" href="https://itb.academia.edu/AhmadSulaiman">Ahmad Sulaiman</a><script data-card-contents-for-user="27032724" type="text/json">{"id":27032724,"first_name":"Ahmad","last_name":"Sulaiman","domain_name":"itb","page_name":"AhmadSulaiman","display_name":"Ahmad Sulaiman","profile_url":"https://itb.academia.edu/AhmadSulaiman?f_ri=91047","photo":"https://0.academia-photos.com/27032724/7603900/8534794/s65_ahmad.sulaiman.jpg_oh_d2857e9fc5f9a247026ebe2909f166b5_oe_557b9382___gda___1435382433_22cfef874b33dfeeb47955c94b7815a9"}</script></span></span></li><li class="js-paper-rank-work_11192078 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="11192078"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 11192078, container: ".js-paper-rank-work_11192078", }); });</script></li><li class="js-percentile-work_11192078 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 11192078; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_11192078"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_11192078 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="11192078"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 11192078; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=11192078]").text(description); $(".js-view-count-work_11192078").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_11192078").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="11192078"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="5766" rel="nofollow" href="https://www.academia.edu/Documents/in/Wireless_Systems">Wireless Systems</a>, <script data-card-contents-for-ri="5766" type="text/json">{"id":5766,"name":"Wireless Systems","url":"https://www.academia.edu/Documents/in/Wireless_Systems?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1250589" rel="nofollow" href="https://www.academia.edu/Documents/in/Microstrip_Line">Microstrip Line</a>, <script data-card-contents-for-ri="1250589" type="text/json">{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1655769" rel="nofollow" href="https://www.academia.edu/Documents/in/Radiation_Pattern">Radiation Pattern</a><script data-card-contents-for-ri="1655769" type="text/json">{"id":1655769,"name":"Radiation Pattern","url":"https://www.academia.edu/Documents/in/Radiation_Pattern?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=11192078]'), work: {"id":11192078,"title":"3.5 GHz rectangular dielectric resonator antenna","created_at":"2015-03-01T20:02:07.069-08:00","url":"https://www.academia.edu/11192078/3_5_GHz_rectangular_dielectric_resonator_antenna?f_ri=91047","dom_id":"work_11192078","summary":"In this paper, dielectric resonator antenna operated at 3.5 GHz was design and simulated using CST Microwave Studio and subsequently fabricated. Direct microstrip line of 50 Ω was used as the feeder. In this design, rectangular shape was used as the dielectric resonator as it offers more option to control the resonant frequency. The position of rectangular DR was varied to determine the best coupling and the distance was found to be 6 mm. The simulated results of the return loss, resonant frequency together with radiation pattern were compared with the measured results. It was found that rectangular DRA has potential to be used in wireless system.","downloadable_attachments":[{"id":46830594,"asset_id":11192078,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":27032724,"first_name":"Ahmad","last_name":"Sulaiman","domain_name":"itb","page_name":"AhmadSulaiman","display_name":"Ahmad Sulaiman","profile_url":"https://itb.academia.edu/AhmadSulaiman?f_ri=91047","photo":"https://0.academia-photos.com/27032724/7603900/8534794/s65_ahmad.sulaiman.jpg_oh_d2857e9fc5f9a247026ebe2909f166b5_oe_557b9382___gda___1435382433_22cfef874b33dfeeb47955c94b7815a9"}],"research_interests":[{"id":5766,"name":"Wireless Systems","url":"https://www.academia.edu/Documents/in/Wireless_Systems?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047","nofollow":true},{"id":1655769,"name":"Radiation Pattern","url":"https://www.academia.edu/Documents/in/Radiation_Pattern?f_ri=91047","nofollow":true},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_43313674" data-work_id="43313674" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/43313674/Design_of_Multiband_Hybrid_Coupler_with_Open_Circuit_Stub">Design of Multiband Hybrid Coupler with Open Circuit Stub</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Directional couplers are passive reciprocal networks. It is a four-port network where all four ports are ideally matched and lossless. The wave incident in port 1 couples power into ports 2 and 3 but not into port 4. Nowadays, these... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_43313674" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Directional couplers are passive reciprocal networks. It is a four-port network where all four ports are ideally matched and lossless. The wave incident in port 1 couples power into ports 2 and 3 but not into port 4. Nowadays, these components are essential to all communication systems as they play an important role in the monitoring and measurement of signal samples within an assigned operating frequency. In the first part of the project is to propose a broadside-coupled patch directional coupler. The substrate used is RO4003C with the Ɛr = 3.38 and H = 0.8128 mm or 32 mil. A travelling-wave sectoral slot resonator with three ports is presented in the second part. Computer Simulation Tool (CST) has been used to optimize the magnitude of the directional coupler. The simulated results have agreed well with ideal results. Parameter analysis has been conducted on the proposed directional coupler in order to study the effects of different design parameters. Discussion and recommendation have been made after each parameter analysis.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/43313674" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e7752c547bb06719d90f599b5a2dcc59" rel="nofollow" data-download="{"attachment_id":63594781,"asset_id":43313674,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/63594781/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="6079060" href="https://independent.academia.edu/IJRASETPublication">IJRASET Publication</a><script data-card-contents-for-user="6079060" type="text/json">{"id":6079060,"first_name":"IJRASET","last_name":"Publication","domain_name":"independent","page_name":"IJRASETPublication","display_name":"IJRASET Publication","profile_url":"https://independent.academia.edu/IJRASETPublication?f_ri=91047","photo":"https://0.academia-photos.com/6079060/2549300/33111525/s65_ijraset.publication.jpg"}</script></span></span></li><li class="js-paper-rank-work_43313674 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="43313674"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 43313674, container: ".js-paper-rank-work_43313674", }); 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$(".js-view-count[data-work-id=43313674]").text(description); $(".js-view-count-work_43313674").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_43313674").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="43313674"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">3</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="969732" rel="nofollow" href="https://www.academia.edu/Documents/in/Directional_Coupler">Directional Coupler</a>, <script data-card-contents-for-ri="969732" type="text/json">{"id":969732,"name":"Directional Coupler","url":"https://www.academia.edu/Documents/in/Directional_Coupler?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1231013" rel="nofollow" href="https://www.academia.edu/Documents/in/Hybrid_Coupler">Hybrid Coupler</a><script data-card-contents-for-ri="1231013" type="text/json">{"id":1231013,"name":"Hybrid Coupler","url":"https://www.academia.edu/Documents/in/Hybrid_Coupler?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=43313674]'), work: {"id":43313674,"title":"Design of Multiband Hybrid Coupler with Open Circuit Stub","created_at":"2020-06-11T02:09:26.247-07:00","url":"https://www.academia.edu/43313674/Design_of_Multiband_Hybrid_Coupler_with_Open_Circuit_Stub?f_ri=91047","dom_id":"work_43313674","summary":"Directional couplers are passive reciprocal networks. It is a four-port network where all four ports are ideally matched and lossless. The wave incident in port 1 couples power into ports 2 and 3 but not into port 4. Nowadays, these components are essential to all communication systems as they play an important role in the monitoring and measurement of signal samples within an assigned operating frequency. In the first part of the project is to propose a broadside-coupled patch directional coupler. The substrate used is RO4003C with the Ɛr = 3.38 and H = 0.8128 mm or 32 mil. A travelling-wave sectoral slot resonator with three ports is presented in the second part. Computer Simulation Tool (CST) has been used to optimize the magnitude of the directional coupler. The simulated results have agreed well with ideal results. Parameter analysis has been conducted on the proposed directional coupler in order to study the effects of different design parameters. Discussion and recommendation have been made after each parameter analysis.","downloadable_attachments":[{"id":63594781,"asset_id":43313674,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":6079060,"first_name":"IJRASET","last_name":"Publication","domain_name":"independent","page_name":"IJRASETPublication","display_name":"IJRASET Publication","profile_url":"https://independent.academia.edu/IJRASETPublication?f_ri=91047","photo":"https://0.academia-photos.com/6079060/2549300/33111525/s65_ijraset.publication.jpg"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":969732,"name":"Directional Coupler","url":"https://www.academia.edu/Documents/in/Directional_Coupler?f_ri=91047","nofollow":true},{"id":1231013,"name":"Hybrid Coupler","url":"https://www.academia.edu/Documents/in/Hybrid_Coupler?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5321399" data-work_id="5321399" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5321399/Electric_field_distribution_in_132_kV_XLPE_cable_termination_model_from_finite_element_method">Electric field distribution in 132 kV XLPE cable termination model from finite element method</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">High voltage cable terminations are widely used in power system networks. A proper design of cable termination is essential in reducing the electric field distribution around the end of high voltage cable. However, if there are defects... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_5321399" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">High voltage cable terminations are widely used in power system networks. A proper design of cable termination is essential in reducing the electric field distribution around the end of high voltage cable. However, if there are defects exist at cable termination structure, the electric field can be enhanced significantly and can be the source of electrical discharges. Therefore, it is important to understand the effect of defects on the electric field distribution at cable terminations. In this work, a 132 kV XLPE outdoor cable termination has been modelled using finite element analysis (FEA) method. The model has been used to simulate the electric field distribution in the cable termination in the presence of defects. Defects that have been considered are void defect in porcelain, stress cone and fluid, sharp pin on the porcelain surface and delamination defect between the insulator and the stress cone. The effect of different void location, material dielectric constant and porcelain radius on the electric field magnitude at cable termination have also been investigated. From the results obtained in this work, a better understanding of the electric field distribution at the cable termination with defects can be attained. © 2012 IEEE. <br /> <br /><a href="http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416254" rel="nofollow">http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416254</a></div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5321399" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c38c2e6d93cd61902dc8ecc421fe464b" rel="nofollow" data-download="{"attachment_id":32482701,"asset_id":5321399,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32482701/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3330383" href="https://malaya.academia.edu/HazleeAzilIllias">Hazlee Azil Illias</a><script data-card-contents-for-user="3330383" type="text/json">{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}</script></span></span></li><li class="js-paper-rank-work_5321399 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="5321399"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 5321399, container: ".js-paper-rank-work_5321399", }); 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$(".js-view-count[data-work-id=5321399]").text(description); $(".js-view-count-work_5321399").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_5321399").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="5321399"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">23</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2377" rel="nofollow" href="https://www.academia.edu/Documents/in/Finite_Element_Methods">Finite Element Methods</a>, <script data-card-contents-for-ri="2377" type="text/json">{"id":2377,"name":"Finite Element Methods","url":"https://www.academia.edu/Documents/in/Finite_Element_Methods?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a><script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=5321399]'), work: {"id":5321399,"title":"Electric field distribution in 132 kV XLPE cable termination model from finite element method","created_at":"2013-12-04T14:52:47.800-08:00","url":"https://www.academia.edu/5321399/Electric_field_distribution_in_132_kV_XLPE_cable_termination_model_from_finite_element_method?f_ri=91047","dom_id":"work_5321399","summary":"High voltage cable terminations are widely used in power system networks. A proper design of cable termination is essential in reducing the electric field distribution around the end of high voltage cable. However, if there are defects exist at cable termination structure, the electric field can be enhanced significantly and can be the source of electrical discharges. Therefore, it is important to understand the effect of defects on the electric field distribution at cable terminations. In this work, a 132 kV XLPE outdoor cable termination has been modelled using finite element analysis (FEA) method. The model has been used to simulate the electric field distribution in the cable termination in the presence of defects. Defects that have been considered are void defect in porcelain, stress cone and fluid, sharp pin on the porcelain surface and delamination defect between the insulator and the stress cone. The effect of different void location, material dielectric constant and porcelain radius on the electric field magnitude at cable termination have also been investigated. From the results obtained in this work, a better understanding of the electric field distribution at the cable termination with defects can be attained. © 2012 IEEE.\r\n\r\nhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416254 ","downloadable_attachments":[{"id":32482701,"asset_id":5321399,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":2377,"name":"Finite Element Methods","url":"https://www.academia.edu/Documents/in/Finite_Element_Methods?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":47749,"name":"Porcelain","url":"https://www.academia.edu/Documents/in/Porcelain?f_ri=91047"},{"id":49273,"name":"Finite Element Analysis","url":"https://www.academia.edu/Documents/in/Finite_Element_Analysis?f_ri=91047"},{"id":70000,"name":"Condition monitoring and fault diagnosis of electric machinery","url":"https://www.academia.edu/Documents/in/Condition_monitoring_and_fault_diagnosis_of_electric_machinery?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":119784,"name":"Power Cables","url":"https://www.academia.edu/Documents/in/Power_Cables?f_ri=91047"},{"id":212475,"name":"Electric Fields","url":"https://www.academia.edu/Documents/in/Electric_Fields?f_ri=91047"},{"id":325115,"name":"Properities of Materials and Design of Concrete Constructions","url":"https://www.academia.edu/Documents/in/Properities_of_Materials_and_Design_of_Concrete_Constructions?f_ri=91047"},{"id":362155,"name":"1) Materials Physics \u0026 Chemistry (in fields of: Dielectric, Semiconductive, Optical and Physical properties of 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Distributions","url":"https://www.academia.edu/Documents/in/Electric_Field_Distributions?f_ri=91047"},{"id":1208728,"name":"Electric Field Magnitude","url":"https://www.academia.edu/Documents/in/Electric_Field_Magnitude?f_ri=91047"},{"id":1208752,"name":"High Voltage Cable","url":"https://www.academia.edu/Documents/in/High_Voltage_Cable?f_ri=91047"},{"id":1208755,"name":"Surface Defects","url":"https://www.academia.edu/Documents/in/Surface_Defects?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22073684" data-work_id="22073684" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22073684/Dielectric_resonator_antenna_array_at_2_4_GHz">Dielectric resonator antenna array at 2.4 GHz</a></div></div><div 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It rejects the crowded frequency bands WiMAX, WLAN and X band interferences produced in UWB communication systems. The proposed fractal... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_39200915" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A compact, circular UWB fractal antenna with triple reconfigurable notch rejection bands is proposed. It rejects the crowded frequency bands WiMAX, WLAN and X band interferences produced in UWB communication systems. The proposed fractal structure consists of a basic circular patch with circular fractal iterations. By employing this new structure of fractals, the overall size of antenna is reduced 53% to 21x25 mm, in comparison with traditional circular monopole antenna. The implemented antenna operates at 3.1-10 GHz. Re-configurability is realized by designing slots and split ring resonators in desired frequencies with the attached PIN diodes. WLAN band rejection was realized by creating a pair of optimized L-shaped slots in the ground plane. By etching a split ring resonator and a U-shaped slot, X and WiMAX bands were also rejected. Furthermore, by attaching diodes to aforementioned slots and designating the diodes on/off, different bands can be included or rejected. In time domain, the antenna properties are evaluated by a figure of merit called fidelity factor. Finally, the antenna properties are measured in anechoic chamber and the results agrees with simulation findings.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/39200915" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e931f1a8f87efe868651f6a97c7d799c" rel="nofollow" data-download="{"attachment_id":59329353,"asset_id":39200915,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/59329353/download_file?st=MTc0MDU2NjMwNSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="114020867" href="https://ttu.academia.edu/AmirhosseinNazeri">Amir hossein Nazeri</a><script data-card-contents-for-user="114020867" type="text/json">{"id":114020867,"first_name":"Amir hossein","last_name":"Nazeri","domain_name":"ttu","page_name":"AmirhosseinNazeri","display_name":"Amir hossein Nazeri","profile_url":"https://ttu.academia.edu/AmirhosseinNazeri?f_ri=91047","photo":"https://0.academia-photos.com/114020867/27374462/25740115/s65_amir_hossein.nazeri.jpg"}</script></span></span></li><li class="js-paper-rank-work_39200915 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="39200915"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 39200915, container: ".js-paper-rank-work_39200915", }); 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$(".js-view-count[data-work-id=39200915]").text(description); $(".js-view-count-work_39200915").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_39200915").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="39200915"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">17</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="9598" rel="nofollow" href="https://www.academia.edu/Documents/in/Microstrip_Antennas_and_Arrays">Microstrip Antennas and Arrays</a>, <script data-card-contents-for-ri="9598" type="text/json">{"id":9598,"name":"Microstrip Antennas and Arrays","url":"https://www.academia.edu/Documents/in/Microstrip_Antennas_and_Arrays?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15417" rel="nofollow" href="https://www.academia.edu/Documents/in/Microstrip_antenna_design">Microstrip antenna design</a>, <script data-card-contents-for-ri="15417" type="text/json">{"id":15417,"name":"Microstrip antenna design","url":"https://www.academia.edu/Documents/in/Microstrip_antenna_design?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="178021" rel="nofollow" href="https://www.academia.edu/Documents/in/Filter">Filter</a><script data-card-contents-for-ri="178021" type="text/json">{"id":178021,"name":"Filter","url":"https://www.academia.edu/Documents/in/Filter?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=39200915]'), work: {"id":39200915,"title":"A Novel Compact Fractal UWB Antenna with Triple Reconfigurable Notch Reject Bands Applications","created_at":"2019-05-20T09:23:21.235-07:00","url":"https://www.academia.edu/39200915/A_Novel_Compact_Fractal_UWB_Antenna_with_Triple_Reconfigurable_Notch_Reject_Bands_Applications?f_ri=91047","dom_id":"work_39200915","summary":"A compact, circular UWB fractal antenna with triple reconfigurable notch rejection bands is proposed. It rejects the crowded frequency bands WiMAX, WLAN and X band interferences produced in UWB communication systems. The proposed fractal structure consists of a basic circular patch with circular fractal iterations. By employing this new structure of fractals, the overall size of antenna is reduced 53% to 21x25 mm, in comparison with traditional circular monopole antenna. The implemented antenna operates at 3.1-10 GHz. Re-configurability is realized by designing slots and split ring resonators in desired frequencies with the attached PIN diodes. WLAN band rejection was realized by creating a pair of optimized L-shaped slots in the ground plane. By etching a split ring resonator and a U-shaped slot, X and WiMAX bands were also rejected. Furthermore, by attaching diodes to aforementioned slots and designating the diodes on/off, different bands can be included or rejected. In time domain, the antenna properties are evaluated by a figure of merit called fidelity factor. Finally, the antenna properties are measured in anechoic chamber and the results agrees with simulation findings.","downloadable_attachments":[{"id":59329353,"asset_id":39200915,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":114020867,"first_name":"Amir hossein","last_name":"Nazeri","domain_name":"ttu","page_name":"AmirhosseinNazeri","display_name":"Amir hossein Nazeri","profile_url":"https://ttu.academia.edu/AmirhosseinNazeri?f_ri=91047","photo":"https://0.academia-photos.com/114020867/27374462/25740115/s65_amir_hossein.nazeri.jpg"}],"research_interests":[{"id":9598,"name":"Microstrip Antennas and Arrays","url":"https://www.academia.edu/Documents/in/Microstrip_Antennas_and_Arrays?f_ri=91047","nofollow":true},{"id":15417,"name":"Microstrip antenna design","url":"https://www.academia.edu/Documents/in/Microstrip_antenna_design?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":178021,"name":"Filter","url":"https://www.academia.edu/Documents/in/Filter?f_ri=91047","nofollow":true},{"id":252024,"name":"Miniaturized Dual-Mode Microstrip Bandpass Filter","url":"https://www.academia.edu/Documents/in/Miniaturized_Dual-Mode_Microstrip_Bandpass_Filter?f_ri=91047"},{"id":271631,"name":"Fractal antenna, Antenna","url":"https://www.academia.edu/Documents/in/Fractal_antenna_Antenna?f_ri=91047"},{"id":491639,"name":"Matteo Bandello, Italian Fiction, XVI th Century","url":"https://www.academia.edu/Documents/in/Matteo_Bandello_Italian_Fiction_XVI_th_Century?f_ri=91047"},{"id":758367,"name":"Srr","url":"https://www.academia.edu/Documents/in/Srr?f_ri=91047"},{"id":763589,"name":"Substrate","url":"https://www.academia.edu/Documents/in/Substrate?f_ri=91047"},{"id":788590,"name":"COMPACT MICROSTRIP PATCH ANTENNA","url":"https://www.academia.edu/Documents/in/COMPACT_MICROSTRIP_PATCH_ANTENNA?f_ri=91047"},{"id":802791,"name":"Multiband antenna","url":"https://www.academia.edu/Documents/in/Multiband_antenna?f_ri=91047"},{"id":1010381,"name":"Passives and Actives Microwaves Circuits Design","url":"https://www.academia.edu/Documents/in/Passives_and_Actives_Microwaves_Circuits_Design?f_ri=91047"},{"id":1146982,"name":"Ultra Wideband","url":"https://www.academia.edu/Documents/in/Ultra_Wideband?f_ri=91047"},{"id":1155731,"name":"Microstrip Patch Antenna","url":"https://www.academia.edu/Documents/in/Microstrip_Patch_Antenna?f_ri=91047"},{"id":1184535,"name":"Notch Filters","url":"https://www.academia.edu/Documents/in/Notch_Filters?f_ri=91047"},{"id":1335723,"name":"X-band Radar","url":"https://www.academia.edu/Documents/in/X-band_Radar?f_ri=91047"},{"id":3247261,"name":"frequency band","url":"https://www.academia.edu/Documents/in/frequency_band?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_17137602" data-work_id="17137602" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" rel="nofollow" href="https://www.academia.edu/17137602/Call_for_Papers_International_Journal_of_Antennas_JANT_">Call for Papers - International Journal of Antennas (JANT)</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">International Journal of Antennas is a peer-reviewed, open access journal that publishes original research as well as review articles in the field of antennas and its allied domain. This journal aims to bring together leading academic... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_17137602" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">International Journal of Antennas is a peer-reviewed, open access journal that publishes original research as well as review articles in the field of antennas and its allied domain. This journal aims to bring together leading academic scientists, researchers, engineers and research scholars to exchange and share their experiences and research results in their specialized arena in antenna engineering. The journal invites good quality research and review papers for publications.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/17137602" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3c24fa4cc0eae05fcfe0aaee158aeb45" rel="nofollow" data-download="{"attachment_id":104149067,"asset_id":17137602,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/104149067/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="29931380" rel="nofollow" href="https://independent.academia.edu/Journal_JANT">International Journal of Antennas (JANT)</a><script data-card-contents-for-user="29931380" type="text/json">{"id":29931380,"first_name":"International Journal of Antennas","last_name":"(JANT)","domain_name":"independent","page_name":"Journal_JANT","display_name":"International Journal of Antennas (JANT)","profile_url":"https://independent.academia.edu/Journal_JANT?f_ri=91047","photo":"https://0.academia-photos.com/29931380/9342324/55560208/s65_international_journal_of_antennas._jant_.jpg"}</script></span></span></li><li class="js-paper-rank-work_17137602 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="17137602"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 17137602, container: ".js-paper-rank-work_17137602", }); });</script></li><li class="js-percentile-work_17137602 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 17137602; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_17137602"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_17137602 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="17137602"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 17137602; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=17137602]").text(description); $(".js-view-count-work_17137602").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_17137602").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="17137602"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">18</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="978" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas">Antennas</a>, <script data-card-contents-for-ri="978" type="text/json">{"id":978,"name":"Antennas","url":"https://www.academia.edu/Documents/in/Antennas?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2088" rel="nofollow" href="https://www.academia.edu/Documents/in/Smart_Antenna">Smart Antenna</a>, <script data-card-contents-for-ri="2088" type="text/json">{"id":2088,"name":"Smart Antenna","url":"https://www.academia.edu/Documents/in/Smart_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="9597" rel="nofollow" href="https://www.academia.edu/Documents/in/Reconfigurable_Antennas">Reconfigurable Antennas</a><script data-card-contents-for-ri="9597" type="text/json">{"id":9597,"name":"Reconfigurable Antennas","url":"https://www.academia.edu/Documents/in/Reconfigurable_Antennas?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=17137602]'), work: {"id":17137602,"title":"Call for Papers - International Journal of Antennas (JANT)","created_at":"2015-10-21T21:31:43.345-07:00","url":"https://www.academia.edu/17137602/Call_for_Papers_International_Journal_of_Antennas_JANT_?f_ri=91047","dom_id":"work_17137602","summary":"International Journal of Antennas is a peer-reviewed, open access journal that publishes original research as well as review articles in the field of antennas and its allied domain. This journal aims to bring together leading academic scientists, researchers, engineers and research scholars to exchange and share their experiences and research results in their specialized arena in antenna engineering. The journal invites good quality research and review papers for publications. ","downloadable_attachments":[{"id":104149067,"asset_id":17137602,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":29931380,"first_name":"International Journal of Antennas","last_name":"(JANT)","domain_name":"independent","page_name":"Journal_JANT","display_name":"International Journal of Antennas (JANT)","profile_url":"https://independent.academia.edu/Journal_JANT?f_ri=91047","photo":"https://0.academia-photos.com/29931380/9342324/55560208/s65_international_journal_of_antennas._jant_.jpg"}],"research_interests":[{"id":978,"name":"Antennas","url":"https://www.academia.edu/Documents/in/Antennas?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":2088,"name":"Smart Antenna","url":"https://www.academia.edu/Documents/in/Smart_Antenna?f_ri=91047","nofollow":true},{"id":9597,"name":"Reconfigurable Antennas","url":"https://www.academia.edu/Documents/in/Reconfigurable_Antennas?f_ri=91047","nofollow":true},{"id":9598,"name":"Microstrip Antennas and Arrays","url":"https://www.academia.edu/Documents/in/Microstrip_Antennas_and_Arrays?f_ri=91047"},{"id":15417,"name":"Microstrip antenna design","url":"https://www.academia.edu/Documents/in/Microstrip_antenna_design?f_ri=91047"},{"id":22169,"name":"Microstrip Antenna","url":"https://www.academia.edu/Documents/in/Microstrip_Antenna?f_ri=91047"},{"id":41120,"name":"Millimeter Wave Antennas","url":"https://www.academia.edu/Documents/in/Millimeter_Wave_Antennas?f_ri=91047"},{"id":46414,"name":"Antenna arrays","url":"https://www.academia.edu/Documents/in/Antenna_arrays?f_ri=91047"},{"id":49010,"name":"Antenas","url":"https://www.academia.edu/Documents/in/Antenas?f_ri=91047"},{"id":89205,"name":"Antenna Design","url":"https://www.academia.edu/Documents/in/Antenna_Design?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":110401,"name":"Antennas and propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_propagation?f_ri=91047"},{"id":213523,"name":"Phased Array Antennas","url":"https://www.academia.edu/Documents/in/Phased_Array_Antennas?f_ri=91047"},{"id":235341,"name":"Rf and microwave antennas","url":"https://www.academia.edu/Documents/in/Rf_and_microwave_antennas?f_ri=91047"},{"id":369147,"name":"Microstrip Patch Antennas","url":"https://www.academia.edu/Documents/in/Microstrip_Patch_Antennas?f_ri=91047"},{"id":758304,"name":"Antenna Star Bolic","url":"https://www.academia.edu/Documents/in/Antenna_Star_Bolic?f_ri=91047"},{"id":772347,"name":"Log Periodic Dipole Antenna","url":"https://www.academia.edu/Documents/in/Log_Periodic_Dipole_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_50941027" data-work_id="50941027" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/50941027/CHE_697_Research_Project_2_Thesis_Full_Report_Mohd_Wishal">CHE 697_Research Project 2_Thesis Full Report_Mohd Wishal</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Nanocomposites possess different characteristics that could potentially contribute to the technological development in various sector including dental applications, dielectric enhancement, capacitors, drug delivery and many more. In this... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_50941027" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Nanocomposites possess different characteristics that could potentially contribute to the technological development in various sector including dental applications, dielectric enhancement, capacitors, drug delivery and many more. In this research study, a nanocomposite is formed between polypropylene (PP) and titanium dioxide (TiO2). TiO2 acts as a filler for the polymer matrix and this addition could significantly improve several properties suitable for its dielectric application. A melt intercalation method is used for the mixing process involving several process units such as rotating twin-screw extruder, pelletizer, dryer and injection molding. The dispersion of nanofiller in the host polymer matrix is identify by using a scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and LCR meter. The microscopic analysis obtained for the nanocomposite shows high dispersion at below than 4 wt.%, which clearly shown by the less agglomeration produced. Similar results is obtained for thermal properties as nanocomposite with lower than 4 wt.% shows better thermal stability and higher onset as well as maximum degradation temperature. Despite lack of studies conducted in dielectric studies of polypropylene (PP)/ titanium dioxide (TiO2) nanocomposite, performance is best considered at 10 wt.% to 20 wt.%. For total, this review paper investigate the blending effect of PP/TiO2 nanocomposite at three distinct properties which is surface morphology, thermal properties and dielectric performances.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/50941027" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="2ea302a4135ca5d4a34f65117a88cc2c" rel="nofollow" data-download="{"attachment_id":68817801,"asset_id":50941027,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/68817801/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="58628505" href="https://uitm.academia.edu/WishalKurnia">Wishal Kurnia</a><script data-card-contents-for-user="58628505" type="text/json">{"id":58628505,"first_name":"Wishal","last_name":"Kurnia","domain_name":"uitm","page_name":"WishalKurnia","display_name":"Wishal Kurnia","profile_url":"https://uitm.academia.edu/WishalKurnia?f_ri=91047","photo":"https://0.academia-photos.com/58628505/22746694/32317140/s65_wishal.kurnia.jpg"}</script></span></span></li><li class="js-paper-rank-work_50941027 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="50941027"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 50941027, container: ".js-paper-rank-work_50941027", }); 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$(".js-view-count[data-work-id=50941027]").text(description); $(".js-view-count-work_50941027").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_50941027").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="50941027"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">20</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="59" rel="nofollow" href="https://www.academia.edu/Documents/in/Polymer_Engineering">Polymer Engineering</a>, <script data-card-contents-for-ri="59" type="text/json">{"id":59,"name":"Polymer Engineering","url":"https://www.academia.edu/Documents/in/Polymer_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="72" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemical_Engineering">Chemical Engineering</a>, <script data-card-contents-for-ri="72" type="text/json">{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2526" rel="nofollow" href="https://www.academia.edu/Documents/in/Polymer_Chemistry">Polymer Chemistry</a>, <script data-card-contents-for-ri="2526" type="text/json">{"id":2526,"name":"Polymer Chemistry","url":"https://www.academia.edu/Documents/in/Polymer_Chemistry?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="11678" rel="nofollow" href="https://www.academia.edu/Documents/in/Nanocomposites">Nanocomposites</a><script data-card-contents-for-ri="11678" type="text/json">{"id":11678,"name":"Nanocomposites","url":"https://www.academia.edu/Documents/in/Nanocomposites?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=50941027]'), work: {"id":50941027,"title":"CHE 697_Research Project 2_Thesis Full Report_Mohd Wishal","created_at":"2021-08-19T21:24:20.959-07:00","url":"https://www.academia.edu/50941027/CHE_697_Research_Project_2_Thesis_Full_Report_Mohd_Wishal?f_ri=91047","dom_id":"work_50941027","summary":"Nanocomposites possess different characteristics that could potentially contribute to the technological development in various sector including dental applications, dielectric enhancement, capacitors, drug delivery and many more. In this research study, a nanocomposite is formed between polypropylene (PP) and titanium dioxide (TiO2). TiO2 acts as a filler for the polymer matrix and this addition could significantly improve several properties suitable for its dielectric application. A melt intercalation method is used for the mixing process involving several process units such as rotating twin-screw extruder, pelletizer, dryer and injection molding. The dispersion of nanofiller in the host polymer matrix is identify by using a scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and LCR meter. The microscopic analysis obtained for the nanocomposite shows high dispersion at below than 4 wt.%, which clearly shown by the less agglomeration produced. Similar results is obtained for thermal properties as nanocomposite with lower than 4 wt.% shows better thermal stability and higher onset as well as maximum degradation temperature. Despite lack of studies conducted in dielectric studies of polypropylene (PP)/ titanium dioxide (TiO2) nanocomposite, performance is best considered at 10 wt.% to 20 wt.%. For total, this review paper investigate the blending effect of PP/TiO2 nanocomposite at three distinct properties which is surface morphology, thermal properties and dielectric performances.","downloadable_attachments":[{"id":68817801,"asset_id":50941027,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":58628505,"first_name":"Wishal","last_name":"Kurnia","domain_name":"uitm","page_name":"WishalKurnia","display_name":"Wishal Kurnia","profile_url":"https://uitm.academia.edu/WishalKurnia?f_ri=91047","photo":"https://0.academia-photos.com/58628505/22746694/32317140/s65_wishal.kurnia.jpg"}],"research_interests":[{"id":59,"name":"Polymer Engineering","url":"https://www.academia.edu/Documents/in/Polymer_Engineering?f_ri=91047","nofollow":true},{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=91047","nofollow":true},{"id":2526,"name":"Polymer Chemistry","url":"https://www.academia.edu/Documents/in/Polymer_Chemistry?f_ri=91047","nofollow":true},{"id":11678,"name":"Nanocomposites","url":"https://www.academia.edu/Documents/in/Nanocomposites?f_ri=91047","nofollow":true},{"id":21466,"name":"Polymers","url":"https://www.academia.edu/Documents/in/Polymers?f_ri=91047"},{"id":34550,"name":"Polymer Nanocomposites","url":"https://www.academia.edu/Documents/in/Polymer_Nanocomposites?f_ri=91047"},{"id":52630,"name":"Biodegradable polymer composites","url":"https://www.academia.edu/Documents/in/Biodegradable_polymer_composites?f_ri=91047"},{"id":58527,"name":"Polymer","url":"https://www.academia.edu/Documents/in/Polymer?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":94267,"name":"Nanocomposites, Nanomaterials Characterization, and Nanomaterials, graphene, carbon nanotubes, nanoparticles, nanorod, quantum dots","url":"https://www.academia.edu/Documents/in/Nanocomposites_Nanomaterials_Characterization_and_Nanomaterials_graphene_carbon_nanotubes_nanop?f_ri=91047"},{"id":99017,"name":"Nanocomposite","url":"https://www.academia.edu/Documents/in/Nanocomposite?f_ri=91047"},{"id":99790,"name":"Dielectric Spectroscopy","url":"https://www.academia.edu/Documents/in/Dielectric_Spectroscopy?f_ri=91047"},{"id":102207,"name":"DIELECTRIC","url":"https://www.academia.edu/Documents/in/DIELECTRIC?f_ri=91047"},{"id":139778,"name":"Dielectrics","url":"https://www.academia.edu/Documents/in/Dielectrics?f_ri=91047"},{"id":186260,"name":"Dielectric Properties","url":"https://www.academia.edu/Documents/in/Dielectric_Properties?f_ri=91047"},{"id":205999,"name":"Polypropylene Nanocomposite","url":"https://www.academia.edu/Documents/in/Polypropylene_Nanocomposite?f_ri=91047"},{"id":239341,"name":"Polymer-Clay Nanocomposites","url":"https://www.academia.edu/Documents/in/Polymer-Clay_Nanocomposites?f_ri=91047"},{"id":389578,"name":"Dielectric Constant","url":"https://www.academia.edu/Documents/in/Dielectric_Constant?f_ri=91047"},{"id":1201891,"name":"Dielectric Materials","url":"https://www.academia.edu/Documents/in/Dielectric_Materials?f_ri=91047"},{"id":1366612,"name":"UITM SHAH ALAM","url":"https://www.academia.edu/Documents/in/UITM_SHAH_ALAM?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5321351" data-work_id="5321351" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5321351/Distribution_of_electric_field_in_medium_voltage_cable_joint_geometry">Distribution of electric field in medium voltage cable joint geometry</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Cable joint is used to connect different sections of cable because a cable section is limited to a certain length. The design of a cable joint mainly depends on the cable type, the applied voltage and the cores. These factors contribute... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_5321351" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Cable joint is used to connect different sections of cable because a cable section is limited to a certain length. The design of a cable joint mainly depends on the cable type, the applied voltage and the cores. These factors contribute to the way of how electric field stress is distributed at the cable joint. If there are defects exist within the cable joint insulation material, the electric field at that region is altered. The alteration may cause electrical discharges to occur within the defects if the electric field magnitude is larger than the breakdown strength at the defect sites. Therefore, this paper investigates the electric field distribution in a medium voltage cable joint in the presence of defects. The investigation was done through modelling a medium voltage (MV) cable joint using finite element analysis (FEA) software. Several parameters such as the defect size and location, insulation material dielectric constant and insulation thickness have been studied of their effects on the electric field distribution at the cable joint. The results obtained may be able to help in the designing of cable joint structures which can reduce the electric field stress. © 2012 IEEE. <br /> <br /><a href="http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416337" rel="nofollow">http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416337</a></div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5321351" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="fcda38606ac29344e056e6bb29b8e109" rel="nofollow" data-download="{"attachment_id":32482665,"asset_id":5321351,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32482665/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3330383" href="https://malaya.academia.edu/HazleeAzilIllias">Hazlee Azil Illias</a><script data-card-contents-for-user="3330383" type="text/json">{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}</script></span></span></li><li class="js-paper-rank-work_5321351 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="5321351"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 5321351, container: ".js-paper-rank-work_5321351", }); 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$(".js-view-count[data-work-id=5321351]").text(description); $(".js-view-count-work_5321351").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_5321351").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="5321351"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">29</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2377" rel="nofollow" href="https://www.academia.edu/Documents/in/Finite_Element_Methods">Finite Element Methods</a>, <script data-card-contents-for-ri="2377" type="text/json">{"id":2377,"name":"Finite Element Methods","url":"https://www.academia.edu/Documents/in/Finite_Element_Methods?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a><script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=5321351]'), work: {"id":5321351,"title":"Distribution of electric field in medium voltage cable joint geometry","created_at":"2013-12-04T14:44:06.375-08:00","url":"https://www.academia.edu/5321351/Distribution_of_electric_field_in_medium_voltage_cable_joint_geometry?f_ri=91047","dom_id":"work_5321351","summary":"Cable joint is used to connect different sections of cable because a cable section is limited to a certain length. The design of a cable joint mainly depends on the cable type, the applied voltage and the cores. These factors contribute to the way of how electric field stress is distributed at the cable joint. If there are defects exist within the cable joint insulation material, the electric field at that region is altered. The alteration may cause electrical discharges to occur within the defects if the electric field magnitude is larger than the breakdown strength at the defect sites. Therefore, this paper investigates the electric field distribution in a medium voltage cable joint in the presence of defects. The investigation was done through modelling a medium voltage (MV) cable joint using finite element analysis (FEA) software. Several parameters such as the defect size and location, insulation material dielectric constant and insulation thickness have been studied of their effects on the electric field distribution at the cable joint. The results obtained may be able to help in the designing of cable joint structures which can reduce the electric field stress. © 2012 IEEE.\r\n\r\nhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416337 ","downloadable_attachments":[{"id":32482665,"asset_id":5321351,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":2377,"name":"Finite Element Methods","url":"https://www.academia.edu/Documents/in/Finite_Element_Methods?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":49273,"name":"Finite Element Analysis","url":"https://www.academia.edu/Documents/in/Finite_Element_Analysis?f_ri=91047"},{"id":70000,"name":"Condition monitoring and fault diagnosis of electric machinery","url":"https://www.academia.edu/Documents/in/Condition_monitoring_and_fault_diagnosis_of_electric_machinery?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":737966,"name":"Insulating Materials","url":"https://www.academia.edu/Documents/in/Insulating_Materials?f_ri=91047"},{"id":830479,"name":"Electric Discharges","url":"https://www.academia.edu/Documents/in/Electric_Discharges?f_ri=91047"},{"id":932028,"name":"Electrical Discharges","url":"https://www.academia.edu/Documents/in/Electrical_Discharges?f_ri=91047"},{"id":958021,"name":"Topological Defects","url":"https://www.academia.edu/Documents/in/Topological_Defects?f_ri=91047"},{"id":1130559,"name":"Electric Field","url":"https://www.academia.edu/Documents/in/Electric_Field?f_ri=91047"},{"id":1202015,"name":"Applied Voltages","url":"https://www.academia.edu/Documents/in/Applied_Voltages?f_ri=91047"},{"id":1202035,"name":"Distribution of Electric Fields","url":"https://www.academia.edu/Documents/in/Distribution_of_Electric_Fields?f_ri=91047"},{"id":1202036,"name":"Electric Field Distributions","url":"https://www.academia.edu/Documents/in/Electric_Field_Distributions?f_ri=91047"},{"id":1202037,"name":"Electric Field Stress","url":"https://www.academia.edu/Documents/in/Electric_Field_Stress?f_ri=91047"},{"id":1208547,"name":"Insulation Materials","url":"https://www.academia.edu/Documents/in/Insulation_Materials?f_ri=91047"},{"id":1208576,"name":"Defect Sites","url":"https://www.academia.edu/Documents/in/Defect_Sites?f_ri=91047"},{"id":1208728,"name":"Electric Field Magnitude","url":"https://www.academia.edu/Documents/in/Electric_Field_Magnitude?f_ri=91047"},{"id":1208735,"name":"Cable Joint","url":"https://www.academia.edu/Documents/in/Cable_Joint?f_ri=91047"},{"id":1208736,"name":"Cable Jointing","url":"https://www.academia.edu/Documents/in/Cable_Jointing?f_ri=91047"},{"id":1208744,"name":"Breakdown Strengths","url":"https://www.academia.edu/Documents/in/Breakdown_Strengths?f_ri=91047"},{"id":1208745,"name":"Cable Types","url":"https://www.academia.edu/Documents/in/Cable_Types?f_ri=91047"},{"id":1208746,"name":"Defect Size","url":"https://www.academia.edu/Documents/in/Defect_Size?f_ri=91047"},{"id":1208747,"name":"Insulation Thickness","url":"https://www.academia.edu/Documents/in/Insulation_Thickness?f_ri=91047"},{"id":1208748,"name":"Medium Voltage Cables","url":"https://www.academia.edu/Documents/in/Medium_Voltage_Cables?f_ri=91047"},{"id":1208749,"name":"Cable Cores","url":"https://www.academia.edu/Documents/in/Cable_Cores?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12738865" data-work_id="12738865" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/12738865/DESIGN_OF_X_BAND_PYRAMIDAL_HORN_ANTENNA">DESIGN OF X BAND PYRAMIDAL HORN ANTENNA</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A horn may be considered as a flared out waveguide. In this paper, a powerful electromagnetic simulator, 3D EM solver WIPL-D software is used to design, analyse and optimize the dimensions of horn antenna which is based on MOM solution... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_12738865" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A horn may be considered as a flared out waveguide. In this paper, a powerful electromagnetic simulator, 3D<br />EM solver WIPL-D software is used to design, analyse and optimize the dimensions of horn antenna which is<br />based on MOM solution for computations. The standard horn antenna at 10 GHz for 15dB gain is modelled and<br />the radiation pattern was observed. The horn antenna is optimized to achieve more than 20dB gain using<br />Simplex Algorithm, radiation patterns of the optimized horn antenna are also presented. Geometry of the horn<br />can be modelled by exploring the toolbar ‘symmetry’ option in WIPL-D. Design of X band Pyramidal Horn<br />Antenna is fabricated and measured using Network Analyzer.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12738865" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="9df3ef2d16e4c2bf558e846d3d02df37" rel="nofollow" data-download="{"attachment_id":37799842,"asset_id":12738865,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/37799842/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="28035136" href="https://independent.academia.edu/ijaceeejournal">ijaceee journal</a><script data-card-contents-for-user="28035136" type="text/json">{"id":28035136,"first_name":"ijaceee","last_name":"journal","domain_name":"independent","page_name":"ijaceeejournal","display_name":"ijaceee journal","profile_url":"https://independent.academia.edu/ijaceeejournal?f_ri=91047","photo":"https://0.academia-photos.com/28035136/8018762/8980966/s65_ijaceee.journal.jpg"}</script></span></span></li><li class="js-paper-rank-work_12738865 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12738865"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12738865, container: ".js-paper-rank-work_12738865", }); 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In this paper, a powerful electromagnetic simulator, 3D\nEM solver WIPL-D software is used to design, analyse and optimize the dimensions of horn antenna which is\nbased on MOM solution for computations. The standard horn antenna at 10 GHz for 15dB gain is modelled and\nthe radiation pattern was observed. The horn antenna is optimized to achieve more than 20dB gain using\nSimplex Algorithm, radiation patterns of the optimized horn antenna are also presented. Geometry of the horn\ncan be modelled by exploring the toolbar ‘symmetry’ option in WIPL-D. Design of X band Pyramidal Horn\nAntenna is fabricated and measured using Network Analyzer.\n","downloadable_attachments":[{"id":37799842,"asset_id":12738865,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":28035136,"first_name":"ijaceee","last_name":"journal","domain_name":"independent","page_name":"ijaceeejournal","display_name":"ijaceee journal","profile_url":"https://independent.academia.edu/ijaceeejournal?f_ri=91047","photo":"https://0.academia-photos.com/28035136/8018762/8980966/s65_ijaceee.journal.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":10924,"name":"Optimization techniques","url":"https://www.academia.edu/Documents/in/Optimization_techniques?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":188845,"name":"Gain-based damages","url":"https://www.academia.edu/Documents/in/Gain-based_damages?f_ri=91047"},{"id":1335723,"name":"X-band Radar","url":"https://www.academia.edu/Documents/in/X-band_Radar?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22989255" data-work_id="22989255" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22989255/The_Synthesis_Properties_and_Applications_of_Columbite_Niobates_M2_Nb2O6_A_Critical_Review">The Synthesis, Properties, and Applications of Columbite Niobates (M2+Nb2O6): A Critical Review</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The binary niobate ceramics, with the formula M2+Nb2O6 where M2+=Ca, Mg, or a transition metal (TM), have the orthorhombic columbite structure. The best-known members of this group are zinc niobate (ZnNb2O6) and magnesium niobate... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_22989255" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The binary niobate ceramics, with the formula M2+Nb2O6 where M2+=Ca, Mg, or a transition metal (TM), have the orthorhombic columbite structure. The best-known members of this group are zinc niobate (ZnNb2O6) and magnesium niobate (MgNb2O6), but Ca, Co, Ni, Mn, Cu, Cd, and Fe 2+ cations can also be included in the columbite structure. The TM columbite niobates have been found to sinter at temperatures of 1100°–1200°C, much lower than the complex perovskites, and this can be lowered even more when Cu2+ is used. The best columbite niobates have Q×f values similar to those of BaZn0.33Nb0.67O3, and all have ɛr between 17 and 25 and negative τf values of <−80 ppm/°C. There is a growing interest in the columbites as microwave dielectric ceramics, due to their lower processing temperatures, less complicated processing due to the simple chemistry of the binary compounds, and the lower cost of niobium compared with tantalum, and with incorporation of Cu2+ they are approaching low-temperature cofired ceramics (LTCC) temperatures. They have also been investigated combined with other dielectric ceramics (to compensate for the negative τf values), and with additives to lower sintering for LTCC. Furthermore, MgNb2O6 is in wide use as a precursor to synthesize single phase PMN (Pb(Mg1/3Nb2/3)O3) in the “columbite” process, and NiNb2O6 is being increasingly investigated as a catalyst for splitting water and organic compounds. CoNb2O6 and other columbites have interesting magnetic properties, and CaNb2O6 and CdNb2O6 have useful optical properties. This review covers the various means of synthesis of these ceramics, and the effects of processing upon structural, physical, electronic, and optical properties. This review will concentrate on the dielectric properties and applications, as this is the greatest area of interest, but will also cover other properties and applications of these ceramics. All available reported microwave dielectric data for columbites is compiled, compared, and assessed.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/22989255" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="cf6e3cda17088ce1b3b1801fbf80299f" rel="nofollow" data-download="{"attachment_id":43506431,"asset_id":22989255,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43506431/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33248613" href="https://unive.academia.edu/RobertPullar">Robert C Pullar</a><script data-card-contents-for-user="33248613" type="text/json">{"id":33248613,"first_name":"Robert","last_name":"Pullar","domain_name":"unive","page_name":"RobertPullar","display_name":"Robert C Pullar","profile_url":"https://unive.academia.edu/RobertPullar?f_ri=91047","photo":"https://0.academia-photos.com/33248613/9850678/10979316/s65_robert.pullar.jpg"}</script></span></span></li><li class="js-paper-rank-work_22989255 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="22989255"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 22989255, container: ".js-paper-rank-work_22989255", }); 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The best-known members of this group are zinc niobate (ZnNb2O6) and magnesium niobate (MgNb2O6), but Ca, Co, Ni, Mn, Cu, Cd, and Fe 2+ cations can also be included in the columbite structure. The TM columbite niobates have been found to sinter at temperatures of 1100°–1200°C, much lower than the complex perovskites, and this can be lowered even more when Cu2+ is used. The best columbite niobates have Q×f values similar to those of BaZn0.33Nb0.67O3, and all have ɛr between 17 and 25 and negative τf values of \u003c−80 ppm/°C. There is a growing interest in the columbites as microwave dielectric ceramics, due to their lower processing temperatures, less complicated processing due to the simple chemistry of the binary compounds, and the lower cost of niobium compared with tantalum, and with incorporation of Cu2+ they are approaching low-temperature cofired ceramics (LTCC) temperatures. They have also been investigated combined with other dielectric ceramics (to compensate for the negative τf values), and with additives to lower sintering for LTCC. Furthermore, MgNb2O6 is in wide use as a precursor to synthesize single phase PMN (Pb(Mg1/3Nb2/3)O3) in the “columbite” process, and NiNb2O6 is being increasingly investigated as a catalyst for splitting water and organic compounds. CoNb2O6 and other columbites have interesting magnetic properties, and CaNb2O6 and CdNb2O6 have useful optical properties. This review covers the various means of synthesis of these ceramics, and the effects of processing upon structural, physical, electronic, and optical properties. This review will concentrate on the dielectric properties and applications, as this is the greatest area of interest, but will also cover other properties and applications of these ceramics. All available reported microwave dielectric data for columbites is compiled, compared, and assessed.","downloadable_attachments":[{"id":43506431,"asset_id":22989255,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33248613,"first_name":"Robert","last_name":"Pullar","domain_name":"unive","page_name":"RobertPullar","display_name":"Robert C Pullar","profile_url":"https://unive.academia.edu/RobertPullar?f_ri=91047","photo":"https://0.academia-photos.com/33248613/9850678/10979316/s65_robert.pullar.jpg"}],"research_interests":[{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047","nofollow":true},{"id":47732,"name":"RF and Microwave Systems","url":"https://www.academia.edu/Documents/in/RF_and_Microwave_Systems?f_ri=91047","nofollow":true},{"id":50489,"name":"Ceramic Powder Synthesis","url":"https://www.academia.edu/Documents/in/Ceramic_Powder_Synthesis?f_ri=91047","nofollow":true},{"id":58128,"name":"Ceramics","url":"https://www.academia.edu/Documents/in/Ceramics?f_ri=91047","nofollow":true},{"id":81618,"name":"Dielectric resonators for microwave applications","url":"https://www.academia.edu/Documents/in/Dielectric_resonators_for_microwave_applications?f_ri=91047"},{"id":82211,"name":"Microwave Properties of Materials","url":"https://www.academia.edu/Documents/in/Microwave_Properties_of_Materials?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":101785,"name":"Processing of Ceramics","url":"https://www.academia.edu/Documents/in/Processing_of_Ceramics?f_ri=91047"},{"id":102207,"name":"DIELECTRIC","url":"https://www.academia.edu/Documents/in/DIELECTRIC?f_ri=91047"},{"id":139778,"name":"Dielectrics","url":"https://www.academia.edu/Documents/in/Dielectrics?f_ri=91047"},{"id":186260,"name":"Dielectric Properties","url":"https://www.academia.edu/Documents/in/Dielectric_Properties?f_ri=91047"},{"id":255471,"name":"Microwave Measurements the dielectric properties of material at high temperature","url":"https://www.academia.edu/Documents/in/Microwave_Measurements_the_dielectric_properties_of_material_at_high_temperature?f_ri=91047"},{"id":389578,"name":"Dielectric Constant","url":"https://www.academia.edu/Documents/in/Dielectric_Constant?f_ri=91047"},{"id":566188,"name":"Microwave dielectric materials","url":"https://www.academia.edu/Documents/in/Microwave_dielectric_materials?f_ri=91047"},{"id":602067,"name":"Dielectric and ferroelectric materials","url":"https://www.academia.edu/Documents/in/Dielectric_and_ferroelectric_materials?f_ri=91047"},{"id":623512,"name":"Dielectric Measurements","url":"https://www.academia.edu/Documents/in/Dielectric_Measurements?f_ri=91047"},{"id":725012,"name":"Dielectric Resonators","url":"https://www.academia.edu/Documents/in/Dielectric_Resonators?f_ri=91047"},{"id":993235,"name":"Ceramic Processing","url":"https://www.academia.edu/Documents/in/Ceramic_Processing?f_ri=91047"},{"id":1809387,"name":"Niobium Oxide","url":"https://www.academia.edu/Documents/in/Niobium_Oxide?f_ri=91047"},{"id":2007482,"name":"Columbites","url":"https://www.academia.edu/Documents/in/Columbites?f_ri=91047"},{"id":2282134,"name":"Niobates","url":"https://www.academia.edu/Documents/in/Niobates?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12256766" data-work_id="12256766" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/12256766/Design_of_a_Compact_Planar_Antenna_for_Ultra_wideband_Operation">Design of a Compact Planar Antenna for Ultra-wideband Operation</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, a new compact planar antenna is proposed for UWB (Ultra-wideband) operations. The proposed antenna has a low profile structure, consisting of a radiating patch, notched ground plane, and a novel arc-shaped strip connected... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_12256766" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, a new compact planar antenna is proposed for UWB (Ultra-wideband) operations. The proposed antenna has a low profile structure, consisting of a radiating patch, notched ground plane, and a novel arc-shaped strip connected between the microstrip feed line and the radiating patch. By using the proposed structure, broadband antenna with good impedance matching is obtained. Measured results show that the antenna can achieve a bandwidth of 96.22%. The proposed antenna is optimized in order to satisfy the required band with a good radiation pattern. The fabricated antenna has a compact size of 16 x 20 x 1.6 mm(3). These features demonstrate that the proposed antenna is a suitable candidate for UWB applications, due to its simple configuration, compactness, and low fabrication costs. <br /> <br /><a href="http://umexpert.um.edu.my/file/publication/00005154_120390.pdf" rel="nofollow">http://umexpert.um.edu.my/file/publication/00005154_120390.pdf</a></div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12256766" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="8d99ec160908f8e6cc2360a727fd3820" rel="nofollow" data-download="{"attachment_id":37559978,"asset_id":12256766,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/37559978/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="28384652" href="https://malaya.academia.edu/FacultyofEngineeringUniversityofMalaya">Faculty of Engineering University of Malaya</a><script data-card-contents-for-user="28384652" type="text/json">{"id":28384652,"first_name":"Faculty of Engineering","last_name":"University of Malaya","domain_name":"malaya","page_name":"FacultyofEngineeringUniversityofMalaya","display_name":"Faculty of Engineering University of Malaya","profile_url":"https://malaya.academia.edu/FacultyofEngineeringUniversityofMalaya?f_ri=91047","photo":"https://0.academia-photos.com/28384652/8018956/8981173/s65_faculty_of_engineering.university_of_malaya.jpg"}</script></span></span></li><li class="js-paper-rank-work_12256766 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12256766"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12256766, container: ".js-paper-rank-work_12256766", }); 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$(".js-view-count[data-work-id=12256766]").text(description); $(".js-view-count-work_12256766").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_12256766").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="12256766"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">13</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=12256766]'), work: {"id":12256766,"title":"Design of a Compact Planar Antenna for Ultra-wideband Operation","created_at":"2015-05-06T01:23:37.310-07:00","url":"https://www.academia.edu/12256766/Design_of_a_Compact_Planar_Antenna_for_Ultra_wideband_Operation?f_ri=91047","dom_id":"work_12256766","summary":"In this paper, a new compact planar antenna is proposed for UWB (Ultra-wideband) operations. The proposed antenna has a low profile structure, consisting of a radiating patch, notched ground plane, and a novel arc-shaped strip connected between the microstrip feed line and the radiating patch. By using the proposed structure, broadband antenna with good impedance matching is obtained. Measured results show that the antenna can achieve a bandwidth of 96.22%. The proposed antenna is optimized in order to satisfy the required band with a good radiation pattern. The fabricated antenna has a compact size of 16 x 20 x 1.6 mm(3). These features demonstrate that the proposed antenna is a suitable candidate for UWB applications, due to its simple configuration, compactness, and low fabrication costs.\r\n\r\nhttp://umexpert.um.edu.my/file/publication/00005154_120390.pdf ","downloadable_attachments":[{"id":37559978,"asset_id":12256766,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":28384652,"first_name":"Faculty of Engineering","last_name":"University of Malaya","domain_name":"malaya","page_name":"FacultyofEngineeringUniversityofMalaya","display_name":"Faculty of Engineering University of Malaya","profile_url":"https://malaya.academia.edu/FacultyofEngineeringUniversityofMalaya?f_ri=91047","photo":"https://0.academia-photos.com/28384652/8018956/8981173/s65_faculty_of_engineering.university_of_malaya.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":13977,"name":"Peter Sloterdijk","url":"https://www.academia.edu/Documents/in/Peter_Sloterdijk?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":69806,"name":"- Antenna design: RFID, multiband, UWB, MIMO arrays, mm-wave antennas","url":"https://www.academia.edu/Documents/in/_Antenna_design_RFID_multiband_UWB_MIMO_arrays_mm-wave_antennas?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":651373,"name":"Design of Broadband Microstrip Patch Antennas","url":"https://www.academia.edu/Documents/in/Design_of_Broadband_Microstrip_Patch_Antennas?f_ri=91047"},{"id":1205375,"name":"Planar Inverted F Antenna","url":"https://www.academia.edu/Documents/in/Planar_Inverted_F_Antenna?f_ri=91047"},{"id":1361612,"name":"Ultra Wideband Antennas","url":"https://www.academia.edu/Documents/in/Ultra_Wideband_Antennas?f_ri=91047"},{"id":1924415,"name":"Printed Ultrawideband Antenna","url":"https://www.academia.edu/Documents/in/Printed_Ultrawideband_Antenna?f_ri=91047"},{"id":1924416,"name":"Monopole Antennas","url":"https://www.academia.edu/Documents/in/Monopole_Antennas?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_3356545" data-work_id="3356545" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/3356545/A_compact_rectangular_dielectric_resonator_antenna_for_UWB_wireless_communication_systems">A compact rectangular dielectric resonator antenna for UWB wireless communication systems</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A compact rectangular dielectric resonator antenna (DRA) is presented for ultra wide band communication systems. Ansoft HFSS 3D electromagnetic solver is used for the design optimization and measurement results are also provided. The... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_3356545" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A compact rectangular dielectric resonator antenna (DRA) is presented for ultra wide band communication systems. Ansoft HFSS 3D electromagnetic solver is used for the design optimization and measurement results are also provided. The proposed antenna has a low profile (∼3), a small size, and a low permittivity constant (10.2). An impedance bandwidth about 46% (from 6.9 to 11 GHz) was achieved making this antenna suitable for UWB applications. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2281–2286, 2009; Published online in Wiley InterScience (<a href="http://www.interscience.wiley.com" rel="nofollow">www.interscience.wiley.com</a>). DOI 10.1002/mop.24623</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/3356545" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="ac208e7a142f38e8df9bbe7579562794" rel="nofollow" data-download="{"attachment_id":50317889,"asset_id":3356545,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50317889/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3894331" href="https://uae.academia.edu/OtmanMrabet">Otman Mrabet</a><script data-card-contents-for-user="3894331" type="text/json">{"id":3894331,"first_name":"Otman","last_name":"Mrabet","domain_name":"uae","page_name":"OtmanMrabet","display_name":"Otman Mrabet","profile_url":"https://uae.academia.edu/OtmanMrabet?f_ri=91047","photo":"https://0.academia-photos.com/3894331/1442259/1765652/s65_otman.mrabet.jpg"}</script></span></span></li><li class="js-paper-rank-work_3356545 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="3356545"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 3356545, container: ".js-paper-rank-work_3356545", }); 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$(".js-view-count[data-work-id=3356545]").text(description); $(".js-view-count-work_3356545").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_3356545").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="3356545"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="5023" rel="nofollow" href="https://www.academia.edu/Documents/in/Microwave">Microwave</a>, <script data-card-contents-for-ri="5023" type="text/json">{"id":5023,"name":"Microwave","url":"https://www.academia.edu/Documents/in/Microwave?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="263152" rel="nofollow" href="https://www.academia.edu/Documents/in/Optical_physics">Optical physics</a>, <script data-card-contents-for-ri="263152" type="text/json">{"id":263152,"name":"Optical physics","url":"https://www.academia.edu/Documents/in/Optical_physics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="543536" rel="nofollow" href="https://www.academia.edu/Documents/in/Wireless_communication_systems">Wireless communication systems</a><script data-card-contents-for-ri="543536" type="text/json">{"id":543536,"name":"Wireless communication systems","url":"https://www.academia.edu/Documents/in/Wireless_communication_systems?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=3356545]'), work: {"id":3356545,"title":"A compact rectangular dielectric resonator antenna for UWB wireless communication systems","created_at":"2013-04-22T05:06:11.699-07:00","url":"https://www.academia.edu/3356545/A_compact_rectangular_dielectric_resonator_antenna_for_UWB_wireless_communication_systems?f_ri=91047","dom_id":"work_3356545","summary":"A compact rectangular dielectric resonator antenna (DRA) is presented for ultra wide band communication systems. Ansoft HFSS 3D electromagnetic solver is used for the design optimization and measurement results are also provided. The proposed antenna has a low profile (∼3), a small size, and a low permittivity constant (10.2). An impedance bandwidth about 46% (from 6.9 to 11 GHz) was achieved making this antenna suitable for UWB applications. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2281–2286, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24623","downloadable_attachments":[{"id":50317889,"asset_id":3356545,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3894331,"first_name":"Otman","last_name":"Mrabet","domain_name":"uae","page_name":"OtmanMrabet","display_name":"Otman Mrabet","profile_url":"https://uae.academia.edu/OtmanMrabet?f_ri=91047","photo":"https://0.academia-photos.com/3894331/1442259/1765652/s65_otman.mrabet.jpg"}],"research_interests":[{"id":5023,"name":"Microwave","url":"https://www.academia.edu/Documents/in/Microwave?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":263152,"name":"Optical physics","url":"https://www.academia.edu/Documents/in/Optical_physics?f_ri=91047","nofollow":true},{"id":543536,"name":"Wireless communication systems","url":"https://www.academia.edu/Documents/in/Wireless_communication_systems?f_ri=91047","nofollow":true},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22455245" data-work_id="22455245" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22455245/Extremely_high_Q_factor_dielectric_resonators_for_millimeter_wave_applications">Extremely high-Q factor dielectric resonators for millimeter-wave applications</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">It has been proven, based on a rigorous electromagnetic analysis, that spherical TE 10 -mode Bragg-reflection resonators exhibit many times higher factors than corresponding cylindrical TE 01 -mode dielectric resonators, dielectric... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_22455245" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">It has been proven, based on a rigorous electromagnetic analysis, that spherical TE 10 -mode Bragg-reflection resonators exhibit many times higher factors than corresponding cylindrical TE 01 -mode dielectric resonators, dielectric whispering-gallery-mode resonators, or empty spherical TE 10 -mode cavities. Rigorous equations have been derived that allow optimally designed -factor and "quarter-wavelength" reflector-multilayered-spherical Bragg-reflection resonators. Experiments have been performed on three-layer spherical resonators made of single-crystal YAG and single-crystal quartz. The unloaded factor for the TE 012 mode in these resonators was 1.04 10 5 at 26.26 GHz for YAG and 6.4 10 4 at 27.63 GHz for quartz.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/22455245" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="378db578de8e7490cacb397d73c75634" rel="nofollow" data-download="{"attachment_id":43072620,"asset_id":22455245,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43072620/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="34378004" href="https://independent.academia.edu/TobarMichael">Michael Tobar</a><script data-card-contents-for-user="34378004" type="text/json">{"id":34378004,"first_name":"Michael","last_name":"Tobar","domain_name":"independent","page_name":"TobarMichael","display_name":"Michael Tobar","profile_url":"https://independent.academia.edu/TobarMichael?f_ri=91047","photo":"https://0.academia-photos.com/34378004/37070922/31504120/s65_michael.tobar.jpg"}</script></span></span></li><li class="js-paper-rank-work_22455245 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="22455245"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 22455245, container: ".js-paper-rank-work_22455245", }); });</script></li><li class="js-percentile-work_22455245 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 22455245; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_22455245"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_22455245 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="22455245"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 22455245; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=22455245]").text(description); $(".js-view-count-work_22455245").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_22455245").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="22455245"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">3</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="41120" rel="nofollow" href="https://www.academia.edu/Documents/in/Millimeter_Wave_Antennas">Millimeter Wave Antennas</a>, <script data-card-contents-for-ri="41120" type="text/json">{"id":41120,"name":"Millimeter Wave Antennas","url":"https://www.academia.edu/Documents/in/Millimeter_Wave_Antennas?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1237788" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering">Electrical And Electronic Engineering</a><script data-card-contents-for-ri="1237788" type="text/json">{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=22455245]'), work: {"id":22455245,"title":"Extremely high-Q factor dielectric resonators for millimeter-wave applications","created_at":"2016-02-25T15:27:37.172-08:00","url":"https://www.academia.edu/22455245/Extremely_high_Q_factor_dielectric_resonators_for_millimeter_wave_applications?f_ri=91047","dom_id":"work_22455245","summary":"It has been proven, based on a rigorous electromagnetic analysis, that spherical TE 10 -mode Bragg-reflection resonators exhibit many times higher factors than corresponding cylindrical TE 01 -mode dielectric resonators, dielectric whispering-gallery-mode resonators, or empty spherical TE 10 -mode cavities. Rigorous equations have been derived that allow optimally designed -factor and \"quarter-wavelength\" reflector-multilayered-spherical Bragg-reflection resonators. Experiments have been performed on three-layer spherical resonators made of single-crystal YAG and single-crystal quartz. The unloaded factor for the TE 012 mode in these resonators was 1.04 10 5 at 26.26 GHz for YAG and 6.4 10 4 at 27.63 GHz for quartz.","downloadable_attachments":[{"id":43072620,"asset_id":22455245,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34378004,"first_name":"Michael","last_name":"Tobar","domain_name":"independent","page_name":"TobarMichael","display_name":"Michael Tobar","profile_url":"https://independent.academia.edu/TobarMichael?f_ri=91047","photo":"https://0.academia-photos.com/34378004/37070922/31504120/s65_michael.tobar.jpg"}],"research_interests":[{"id":41120,"name":"Millimeter Wave Antennas","url":"https://www.academia.edu/Documents/in/Millimeter_Wave_Antennas?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_16264443" data-work_id="16264443" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/16264443/ENHANCEMENT_OF_BANDWIDTH_OF_PLANAR_MICROSTRIP_ANTENNA_WITH_METAMATERIALS">ENHANCEMENT OF BANDWIDTH OF PLANAR MICROSTRIP ANTENNA WITH METAMATERIALS</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper we present a planar left-handed material pattern on the rectangular patch antenna mounted on the substrate is designed to enhance its horizontal radiation as well as to broaden its working bandwidth. The parametric study is... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_16264443" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper we present a planar left-handed material pattern on the rectangular patch antenna mounted on the<br />substrate is designed to enhance its horizontal radiation as well as to broaden its working bandwidth. The parametric study<br />is done to study the effect of the ground plane slots width of 0.3, 0.4 and 0.5 mm respectively on the return loss and<br />bandwidth enhancement, the best value of g is 0.4 mm. Enhancement in the bandwidth is achieved by introducing the<br />metamaterial phenomena instead of the single patch antenna is about 19.2 times with g = 0.4 mm.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/16264443" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="b25719113fb7d421913957f4295bae86" rel="nofollow" data-download="{"attachment_id":38916125,"asset_id":16264443,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/38916125/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="35356640" href="https://uomisan.academia.edu/%D8%A7%D8%AF%D8%A7%D8%AD%D9%85%D8%AF%D9%87%D8%A7%D8%B4%D9%85">ا.د. احمد هاشم ال شاهين</a><script data-card-contents-for-user="35356640" type="text/json">{"id":35356640,"first_name":"ا.د. احمد","last_name":"هاشم ال شاهين","domain_name":"uomisan","page_name":"اداحمدهاشم","display_name":"ا.د. احمد هاشم ال شاهين","profile_url":"https://uomisan.academia.edu/%D8%A7%D8%AF%D8%A7%D8%AD%D9%85%D8%AF%D9%87%D8%A7%D8%B4%D9%85?f_ri=91047","photo":"https://0.academia-photos.com/35356640/10272214/11463482/s65__._._._.jpg_oh_2f6154b504f76f0f0a7b204fa46553f6_oe_56abfcfe"}</script></span></span></li><li class="js-paper-rank-work_16264443 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="16264443"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 16264443, container: ".js-paper-rank-work_16264443", }); 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$(".js-view-count[data-work-id=16264443]").text(description); $(".js-view-count-work_16264443").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_16264443").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="16264443"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=16264443]'), work: {"id":16264443,"title":"ENHANCEMENT OF BANDWIDTH OF PLANAR MICROSTRIP ANTENNA WITH METAMATERIALS","created_at":"2015-09-28T06:47:04.817-07:00","url":"https://www.academia.edu/16264443/ENHANCEMENT_OF_BANDWIDTH_OF_PLANAR_MICROSTRIP_ANTENNA_WITH_METAMATERIALS?f_ri=91047","dom_id":"work_16264443","summary":"In this paper we present a planar left-handed material pattern on the rectangular patch antenna mounted on the\nsubstrate is designed to enhance its horizontal radiation as well as to broaden its working bandwidth. The parametric study\nis done to study the effect of the ground plane slots width of 0.3, 0.4 and 0.5 mm respectively on the return loss and\nbandwidth enhancement, the best value of g is 0.4 mm. Enhancement in the bandwidth is achieved by introducing the\nmetamaterial phenomena instead of the single patch antenna is about 19.2 times with g = 0.4 mm.","downloadable_attachments":[{"id":38916125,"asset_id":16264443,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":35356640,"first_name":"ا.د. احمد","last_name":"هاشم ال شاهين","domain_name":"uomisan","page_name":"اداحمدهاشم","display_name":"ا.د. احمد هاشم ال شاهين","profile_url":"https://uomisan.academia.edu/%D8%A7%D8%AF%D8%A7%D8%AD%D9%85%D8%AF%D9%87%D8%A7%D8%B4%D9%85?f_ri=91047","photo":"https://0.academia-photos.com/35356640/10272214/11463482/s65__._._._.jpg_oh_2f6154b504f76f0f0a7b204fa46553f6_oe_56abfcfe"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_13227868" data-work_id="13227868" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/13227868/Structural_characteristics_and_dielectric_properties_of_neodymium_doped_barium_titanate">Structural characteristics and dielectric properties of neodymium doped barium titanate</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Neodymium (Nd) doped barium titanate powder (Ba (1-x) Nd x TiO 3 ) with x value varying from 0, 0.01, 0.03, 0.05, 0.07, 0.10 and 0.13 was prepared using the sol gel method. The powder samples were calcined at 700°C and tetragonal phase... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_13227868" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Neodymium (Nd) doped barium titanate powder (Ba (1-x) Nd x TiO 3 ) with x value varying from 0, 0.01, 0.03, 0.05, 0.07, 0.10 and 0.13 was prepared using the sol gel method. The powder samples were calcined at 700°C and tetragonal phase appeared in the powders before they were sintered at 1250°C for 3 h. The undoped samples have a polycrystalline tetragonal structure, but Nd doping into the BaTiO 3 caused phase transformation from tetragonal to cubic. The smaller grains (0.35 lm) produced with the addition of Nd is associated to the inhibition of grain growth of samples. The powders for each composition were pressed into pellets and tested as dielectric resonator antenna (DRA). It was found that on the actual antenna circuit, each sample showed a resonance frequency at X-band application and a dielectric constant value in the range of 51.25-56.89 and tangent loss was 0.039-0.045, depending on the concentration of the Nd at room temperature.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/13227868" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="44d8175cb0943fa100634009eff51972" rel="nofollow" data-download="{"attachment_id":45570679,"asset_id":13227868,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/45570679/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32479219" href="https://independent.academia.edu/SrimalaSreekantan">Srimala Sreekantan</a><script data-card-contents-for-user="32479219" type="text/json">{"id":32479219,"first_name":"Srimala","last_name":"Sreekantan","domain_name":"independent","page_name":"SrimalaSreekantan","display_name":"Srimala Sreekantan","profile_url":"https://independent.academia.edu/SrimalaSreekantan?f_ri=91047","photo":"https://0.academia-photos.com/32479219/9715088/10821300/s65_srimala.sreekantan.jpg"}</script></span></span></li><li class="js-paper-rank-work_13227868 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="13227868"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 13227868, container: ".js-paper-rank-work_13227868", }); });</script></li><li class="js-percentile-work_13227868 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 13227868; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_13227868"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_13227868 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="13227868"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13227868; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=13227868]").text(description); $(".js-view-count-work_13227868").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_13227868").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="13227868"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">12</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="56" rel="nofollow" href="https://www.academia.edu/Documents/in/Materials_Engineering">Materials Engineering</a>, <script data-card-contents-for-ri="56" type="text/json">{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="511" rel="nofollow" href="https://www.academia.edu/Documents/in/Materials_Science">Materials Science</a>, <script data-card-contents-for-ri="511" type="text/json">{"id":511,"name":"Materials Science","url":"https://www.academia.edu/Documents/in/Materials_Science?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="10650" rel="nofollow" href="https://www.academia.edu/Documents/in/Materials">Materials</a>, <script data-card-contents-for-ri="10650" type="text/json">{"id":10650,"name":"Materials","url":"https://www.academia.edu/Documents/in/Materials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=13227868]'), work: {"id":13227868,"title":"Structural characteristics and dielectric properties of neodymium doped barium titanate","created_at":"2015-06-23T17:29:03.848-07:00","url":"https://www.academia.edu/13227868/Structural_characteristics_and_dielectric_properties_of_neodymium_doped_barium_titanate?f_ri=91047","dom_id":"work_13227868","summary":"Neodymium (Nd) doped barium titanate powder (Ba (1-x) Nd x TiO 3 ) with x value varying from 0, 0.01, 0.03, 0.05, 0.07, 0.10 and 0.13 was prepared using the sol gel method. The powder samples were calcined at 700°C and tetragonal phase appeared in the powders before they were sintered at 1250°C for 3 h. The undoped samples have a polycrystalline tetragonal structure, but Nd doping into the BaTiO 3 caused phase transformation from tetragonal to cubic. The smaller grains (0.35 lm) produced with the addition of Nd is associated to the inhibition of grain growth of samples. The powders for each composition were pressed into pellets and tested as dielectric resonator antenna (DRA). It was found that on the actual antenna circuit, each sample showed a resonance frequency at X-band application and a dielectric constant value in the range of 51.25-56.89 and tangent loss was 0.039-0.045, depending on the concentration of the Nd at room temperature.","downloadable_attachments":[{"id":45570679,"asset_id":13227868,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32479219,"first_name":"Srimala","last_name":"Sreekantan","domain_name":"independent","page_name":"SrimalaSreekantan","display_name":"Srimala Sreekantan","profile_url":"https://independent.academia.edu/SrimalaSreekantan?f_ri=91047","photo":"https://0.academia-photos.com/32479219/9715088/10821300/s65_srimala.sreekantan.jpg"}],"research_interests":[{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering?f_ri=91047","nofollow":true},{"id":511,"name":"Materials Science","url":"https://www.academia.edu/Documents/in/Materials_Science?f_ri=91047","nofollow":true},{"id":10650,"name":"Materials","url":"https://www.academia.edu/Documents/in/Materials?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":115648,"name":"BARIUM TITANATE","url":"https://www.academia.edu/Documents/in/BARIUM_TITANATE?f_ri=91047"},{"id":128775,"name":"Grain Growth","url":"https://www.academia.edu/Documents/in/Grain_Growth?f_ri=91047"},{"id":186260,"name":"Dielectric Properties","url":"https://www.academia.edu/Documents/in/Dielectric_Properties?f_ri=91047"},{"id":308420,"name":"Phase Transformation","url":"https://www.academia.edu/Documents/in/Phase_Transformation?f_ri=91047"},{"id":389578,"name":"Dielectric Constant","url":"https://www.academia.edu/Documents/in/Dielectric_Constant?f_ri=91047"},{"id":391252,"name":"Room Temperature","url":"https://www.academia.edu/Documents/in/Room_Temperature?f_ri=91047"},{"id":1198493,"name":"Sol Gel Method","url":"https://www.academia.edu/Documents/in/Sol_Gel_Method?f_ri=91047"},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_28025640" data-work_id="28025640" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/28025640/X_Band_dielectric_resonator_bandpass_filter">X-Band dielectric resonator bandpass filter</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">This paper presents a new approach of designing a bandpass filter by applying a combination of microstrip and cylindrical shape of dielectric resonators for X-Band application. Three dielectric resonators with a same permittivity and... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_28025640" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">This paper presents a new approach of designing a bandpass filter by applying a combination of microstrip and cylindrical shape of dielectric resonators for X-Band application. Three dielectric resonators with a same permittivity and diameter of 60 and 5 mm respectively are applied in the circuit in order to obtain a wideband of more than 1.0 GHz. The interaction between the microstrip transmission line and dielectric resonators increases the coupling effect as well as minimizing the insertion loss in the filter passband. An analysis on the effect of the height of the dielectric resonators has been investigated in order to prove that the new approach contributes more advantages and viable at the desired application band.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/28025640" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="eeec2eeacea56e0f43a038f26bdb33ac" rel="nofollow" data-download="{"attachment_id":48332043,"asset_id":28025640,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/48332043/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="52540296" href="https://independent.academia.edu/AOthman4">A. Othman</a><script data-card-contents-for-user="52540296" type="text/json">{"id":52540296,"first_name":"A.","last_name":"Othman","domain_name":"independent","page_name":"AOthman4","display_name":"A. Othman","profile_url":"https://independent.academia.edu/AOthman4?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_28025640 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="28025640"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 28025640, container: ".js-paper-rank-work_28025640", }); });</script></li><li class="js-percentile-work_28025640 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 28025640; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_28025640"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_28025640 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="28025640"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 28025640; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=28025640]").text(description); $(".js-view-count-work_28025640").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_28025640").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="28025640"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">3</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="636490" rel="nofollow" href="https://www.academia.edu/Documents/in/Transmission_Line">Transmission Line</a>, <script data-card-contents-for-ri="636490" type="text/json">{"id":636490,"name":"Transmission Line","url":"https://www.academia.edu/Documents/in/Transmission_Line?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1115582" rel="nofollow" href="https://www.academia.edu/Documents/in/Insertion_Loss">Insertion Loss</a><script data-card-contents-for-ri="1115582" type="text/json">{"id":1115582,"name":"Insertion Loss","url":"https://www.academia.edu/Documents/in/Insertion_Loss?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=28025640]'), work: {"id":28025640,"title":"X-Band dielectric resonator bandpass filter","created_at":"2016-08-26T04:37:41.900-07:00","url":"https://www.academia.edu/28025640/X_Band_dielectric_resonator_bandpass_filter?f_ri=91047","dom_id":"work_28025640","summary":"This paper presents a new approach of designing a bandpass filter by applying a combination of microstrip and cylindrical shape of dielectric resonators for X-Band application. Three dielectric resonators with a same permittivity and diameter of 60 and 5 mm respectively are applied in the circuit in order to obtain a wideband of more than 1.0 GHz. The interaction between the microstrip transmission line and dielectric resonators increases the coupling effect as well as minimizing the insertion loss in the filter passband. An analysis on the effect of the height of the dielectric resonators has been investigated in order to prove that the new approach contributes more advantages and viable at the desired application band.","downloadable_attachments":[{"id":48332043,"asset_id":28025640,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":52540296,"first_name":"A.","last_name":"Othman","domain_name":"independent","page_name":"AOthman4","display_name":"A. Othman","profile_url":"https://independent.academia.edu/AOthman4?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":636490,"name":"Transmission Line","url":"https://www.academia.edu/Documents/in/Transmission_Line?f_ri=91047","nofollow":true},{"id":1115582,"name":"Insertion Loss","url":"https://www.academia.edu/Documents/in/Insertion_Loss?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_10404041" data-work_id="10404041" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/10404041/Distributed_coupling_model_of_the_dielectric_resonator_to_microstrip_line">Distributed coupling model of the dielectric resonator to microstrip line</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A three-dimensional (3-D) electromagnetic (EM) study shows that the magnetic coupling between a dielectric resonator (DR) and a microstrip line is appreciable over a length greater than the diameter of the DR. The effect of this... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_10404041" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A three-dimensional (3-D) electromagnetic (EM) study shows that the magnetic coupling between a dielectric resonator (DR) and a microstrip line is appreciable over a length greater than the diameter of the DR. The effect of this distribution should be considered when modeling the coupling. A new circuit model is introduced representing the coupling as distributed, and an integral method is used to calculate circuit parameters efficiently. Numerical comparison shows that the new model provides better results than the conventional lumped model. In the calculated example, the 3-dB frequency response is reduced from 31 MHz (via the conventional model) to 9.0 MHz (new distributed model) which approaches 6.6 MHz, the result from EM calculation. The equivalent distributed circuit can be easily included in circuit simulators such as Libra TM , and could prove invaluable in the design of DR oscillators.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/10404041" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="01bba8a07cfd58ced5af86007576c048" rel="nofollow" data-download="{"attachment_id":47406140,"asset_id":10404041,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/47406140/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="25577357" href="https://independent.academia.edu/XuXiaoming">Xiaoming Xu</a><script data-card-contents-for-user="25577357" type="text/json">{"id":25577357,"first_name":"Xiaoming","last_name":"Xu","domain_name":"independent","page_name":"XuXiaoming","display_name":"Xiaoming Xu","profile_url":"https://independent.academia.edu/XuXiaoming?f_ri=91047","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_10404041 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="10404041"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 10404041, container: ".js-paper-rank-work_10404041", }); 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$(".js-view-count[data-work-id=10404041]").text(description); $(".js-view-count-work_10404041").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_10404041").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="10404041"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">15</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="6177" rel="nofollow" href="https://www.academia.edu/Documents/in/Modeling">Modeling</a>, <script data-card-contents-for-ri="6177" type="text/json">{"id":6177,"name":"Modeling","url":"https://www.academia.edu/Documents/in/Modeling?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="9191" rel="nofollow" href="https://www.academia.edu/Documents/in/Network_Analysis">Network Analysis</a>, <script data-card-contents-for-ri="9191" type="text/json">{"id":9191,"name":"Network Analysis","url":"https://www.academia.edu/Documents/in/Network_Analysis?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="23044" rel="nofollow" href="https://www.academia.edu/Documents/in/Integral_Equations">Integral Equations</a>, <script data-card-contents-for-ri="23044" type="text/json">{"id":23044,"name":"Integral Equations","url":"https://www.academia.edu/Documents/in/Integral_Equations?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="60658" rel="nofollow" href="https://www.academia.edu/Documents/in/Numerical_Simulation">Numerical Simulation</a><script data-card-contents-for-ri="60658" type="text/json">{"id":60658,"name":"Numerical Simulation","url":"https://www.academia.edu/Documents/in/Numerical_Simulation?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=10404041]'), work: {"id":10404041,"title":"Distributed coupling model of the dielectric resonator to microstrip line","created_at":"2015-01-31T01:23:48.860-08:00","url":"https://www.academia.edu/10404041/Distributed_coupling_model_of_the_dielectric_resonator_to_microstrip_line?f_ri=91047","dom_id":"work_10404041","summary":"A three-dimensional (3-D) electromagnetic (EM) study shows that the magnetic coupling between a dielectric resonator (DR) and a microstrip line is appreciable over a length greater than the diameter of the DR. The effect of this distribution should be considered when modeling the coupling. A new circuit model is introduced representing the coupling as distributed, and an integral method is used to calculate circuit parameters efficiently. Numerical comparison shows that the new model provides better results than the conventional lumped model. In the calculated example, the 3-dB frequency response is reduced from 31 MHz (via the conventional model) to 9.0 MHz (new distributed model) which approaches 6.6 MHz, the result from EM calculation. The equivalent distributed circuit can be easily included in circuit simulators such as Libra TM , and could prove invaluable in the design of DR oscillators.","downloadable_attachments":[{"id":47406140,"asset_id":10404041,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":25577357,"first_name":"Xiaoming","last_name":"Xu","domain_name":"independent","page_name":"XuXiaoming","display_name":"Xiaoming Xu","profile_url":"https://independent.academia.edu/XuXiaoming?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":6177,"name":"Modeling","url":"https://www.academia.edu/Documents/in/Modeling?f_ri=91047","nofollow":true},{"id":9191,"name":"Network Analysis","url":"https://www.academia.edu/Documents/in/Network_Analysis?f_ri=91047","nofollow":true},{"id":23044,"name":"Integral Equations","url":"https://www.academia.edu/Documents/in/Integral_Equations?f_ri=91047","nofollow":true},{"id":60658,"name":"Numerical Simulation","url":"https://www.academia.edu/Documents/in/Numerical_Simulation?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":174781,"name":"Oscillations","url":"https://www.academia.edu/Documents/in/Oscillations?f_ri=91047"},{"id":222469,"name":"Circuit simulation","url":"https://www.academia.edu/Documents/in/Circuit_simulation?f_ri=91047"},{"id":222950,"name":"Oscillators","url":"https://www.academia.edu/Documents/in/Oscillators?f_ri=91047"},{"id":263152,"name":"Optical physics","url":"https://www.academia.edu/Documents/in/Optical_physics?f_ri=91047"},{"id":504035,"name":"Three Dimensional","url":"https://www.academia.edu/Documents/in/Three_Dimensional?f_ri=91047"},{"id":1137568,"name":"Magnetic Resonance Coupling","url":"https://www.academia.edu/Documents/in/Magnetic_Resonance_Coupling?f_ri=91047"},{"id":1146437,"name":"Frequency Response","url":"https://www.academia.edu/Documents/in/Frequency_Response?f_ri=91047"},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"},{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047"},{"id":2168952,"name":"Resonant Frequency","url":"https://www.academia.edu/Documents/in/Resonant_Frequency?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_16347842" data-work_id="16347842" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/16347842/MUSHROOM_SHAPED_DIELECTRIC_RESONATOR_ANTENNA_FOR_WIMAX_APPLICATIONS">MUSHROOM-SHAPED DIELECTRIC RESONATOR ANTENNA FOR WIMAX APPLICATIONS</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A compact mushroom-shaped dielectric resonator antenna (MSDRA) excited by microstrip line feeding, with partial ground plane has been designed and studied theoretically as well as experimentally. The proposed antenna has been developed... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_16347842" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A compact mushroom-shaped dielectric resonator antenna<br />(MSDRA) excited by microstrip line feeding, with partial ground plane<br />has been designed and studied theoretically as well as experimentally.<br />The proposed antenna has been developed for world-wide<br />interoperability for Microwave Access (WiMAX) applications centered at<br />about 3.5 GHz. The total size of the antenna is 62 mm 50 mm. The<br />gain for the antenna is found to vary from 3 to 3.6 dBi. Parametric<br />studies are performed to investigate the performance of the antenna. The<br />effects of finite ground plane and radius size of mushroom (half<br />cylindrical)-shaped dielectric resonator on the antenna performance has<br />been evaluated. The investigations on the S-parameter, gain, directivity,<br />and radiation characteristics show a fairly good agreement which<br />justifies that the MSDRA can be well suited for Wireless communication<br />systems.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/16347842" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="f87346560c021ae4b512ad4fa495b48f" rel="nofollow" data-download="{"attachment_id":38954318,"asset_id":16347842,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/38954318/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="35426981" href="https://nitrkl.academia.edu/SantanuKumarBehera">Dr Santanu Kumar Behera</a><script data-card-contents-for-user="35426981" type="text/json">{"id":35426981,"first_name":"Dr Santanu Kumar","last_name":"Behera","domain_name":"nitrkl","page_name":"SantanuKumarBehera","display_name":"Dr Santanu Kumar Behera","profile_url":"https://nitrkl.academia.edu/SantanuKumarBehera?f_ri=91047","photo":"https://0.academia-photos.com/35426981/10292777/11486047/s65_santanu_kumar.behera.jpg"}</script></span></span></li><li class="js-paper-rank-work_16347842 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="16347842"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 16347842, container: ".js-paper-rank-work_16347842", }); 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$(".js-view-count[data-work-id=16347842]").text(description); $(".js-view-count-work_16347842").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_16347842").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="16347842"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="49" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_Engineering">Electrical Engineering</a>, <script data-card-contents-for-ri="49" type="text/json">{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2087" rel="nofollow" href="https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation">Antennas & Radio Wave Propagation</a>, <script data-card-contents-for-ri="2087" type="text/json">{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="6650" rel="nofollow" href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=16347842]'), work: {"id":16347842,"title":"MUSHROOM-SHAPED DIELECTRIC RESONATOR ANTENNA FOR WIMAX APPLICATIONS","created_at":"2015-10-01T00:05:53.139-07:00","url":"https://www.academia.edu/16347842/MUSHROOM_SHAPED_DIELECTRIC_RESONATOR_ANTENNA_FOR_WIMAX_APPLICATIONS?f_ri=91047","dom_id":"work_16347842","summary":"A compact mushroom-shaped dielectric resonator antenna\n(MSDRA) excited by microstrip line feeding, with partial ground plane\nhas been designed and studied theoretically as well as experimentally.\nThe proposed antenna has been developed for world-wide\ninteroperability for Microwave Access (WiMAX) applications centered at\nabout 3.5 GHz. The total size of the antenna is 62 mm \u0004 50 mm. The\ngain for the antenna is found to vary from 3 to 3.6 dBi. Parametric\nstudies are performed to investigate the performance of the antenna. The\neffects of finite ground plane and radius size of mushroom (half\ncylindrical)-shaped dielectric resonator on the antenna performance has\nbeen evaluated. The investigations on the S-parameter, gain, directivity,\nand radiation characteristics show a fairly good agreement which\njustifies that the MSDRA can be well suited for Wireless communication\nsystems.","downloadable_attachments":[{"id":38954318,"asset_id":16347842,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":35426981,"first_name":"Dr Santanu Kumar","last_name":"Behera","domain_name":"nitrkl","page_name":"SantanuKumarBehera","display_name":"Dr Santanu Kumar Behera","profile_url":"https://nitrkl.academia.edu/SantanuKumarBehera?f_ri=91047","photo":"https://0.academia-photos.com/35426981/10292777/11486047/s65_santanu_kumar.behera.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_6947731" data-work_id="6947731" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/6947731/Concentric_arm_Fractal_Antenna_for_Wireless_Applications">Concentric-arm Fractal Antenna for Wireless Applications</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">This paper presents the design of a concentric shaped fractal antenna suitable for use in multiple frequency band .The CPW-feed and fractal concept have been used to achieve the wide bandwidth in multi frequency band. The shape of the... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_6947731" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">This paper presents the design of a concentric shaped fractal antenna suitable for use in multiple frequency band .The CPW-feed and fractal concept have been used to achieve the wide bandwidth in multi frequency band. The shape of the fractal geometry, the number of iterations and the number of concentric shapes are the important factors for achieving wider impedance bandwidth. The Simulated result of the fractal antenna exhibits multiple frequency band characteristics in the frequency range of 1.09 GHz to 10.32 GHz corresponding to bandwidth in between range of 50 MHz-88 MHz. The obtained radiation patterns of the proposed antenna are close to omni-directional in the H-plane and bidirectional in the E-plane</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/6947731" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="15bb78d46fe036c65205b9055df3395b" rel="nofollow" data-download="{"attachment_id":33617494,"asset_id":6947731,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/33617494/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="11743095" href="https://amity.academia.edu/MalayTripathy">Malay Tripathy</a><script data-card-contents-for-user="11743095" type="text/json">{"id":11743095,"first_name":"Malay","last_name":"Tripathy","domain_name":"amity","page_name":"MalayTripathy","display_name":"Malay Tripathy","profile_url":"https://amity.academia.edu/MalayTripathy?f_ri=91047","photo":"https://0.academia-photos.com/11743095/3382008/3979737/s65_malay.tripathy.jpg"}</script></span></span></li><li class="js-paper-rank-work_6947731 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="6947731"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 6947731, container: ".js-paper-rank-work_6947731", }); 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The shape of the fractal geometry, the number of iterations and the number of concentric shapes are the important factors for achieving wider impedance bandwidth. The Simulated result of the fractal antenna exhibits multiple frequency band characteristics in the frequency range of 1.09 GHz to 10.32 GHz corresponding to bandwidth in between range of 50 MHz-88 MHz. The obtained radiation patterns of the proposed antenna are close to omni-directional in the H-plane and bidirectional in the E-plane","downloadable_attachments":[{"id":33617494,"asset_id":6947731,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":11743095,"first_name":"Malay","last_name":"Tripathy","domain_name":"amity","page_name":"MalayTripathy","display_name":"Malay Tripathy","profile_url":"https://amity.academia.edu/MalayTripathy?f_ri=91047","photo":"https://0.academia-photos.com/11743095/3382008/3979737/s65_malay.tripathy.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":317,"name":"Fractal Geometry","url":"https://www.academia.edu/Documents/in/Fractal_Geometry?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":2345,"name":"Wireless Communications","url":"https://www.academia.edu/Documents/in/Wireless_Communications?f_ri=91047","nofollow":true},{"id":6203,"name":"Electronics \u0026 Telecommunication Engineering","url":"https://www.academia.edu/Documents/in/Electronics_and_Telecommunication_Engineering?f_ri=91047"},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047"},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":802791,"name":"Multiband antenna","url":"https://www.academia.edu/Documents/in/Multiband_antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12235996" data-work_id="12235996" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" rel="nofollow" href="https://www.academia.edu/12235996/ARTIFICIAL_NEURAL_NETWORK_IN_THE_DESIGN_OF_RECTANGULAR_MICROSTRIP_ANTENNA">ARTIFICIAL NEURAL NETWORK IN THE DESIGN OF RECTANGULAR MICROSTRIP ANTENNA</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A simple design to compute accurate resonant frequencies and the electric fields of rectangular microstrip antennas using artificial neural networks (ANN) is proposed. The ANN is developed to calculate the frequency and antenna's field.... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_12235996" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A simple design to compute accurate resonant frequencies and the electric fields of rectangular microstrip antennas using artificial neural networks (ANN) is proposed. The ANN is developed to calculate the frequency and antenna's field. ANN is designed using multilayer perceptron networks (MLP). The results that were obtained accord the trained and tested data of ANN models. As a result, the ANN model is presented as a substitutional method to the detailed electromagnetic design of rectangular microstrip antenna.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12235996" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="14d8b89dd2e99b21c1f70212090419ae" rel="nofollow" data-download="{"attachment_id":37529794,"asset_id":12235996,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/37529794/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="21895691" rel="nofollow" href="https://independent.academia.edu/AciiJournal">Advanced Computational Intelligence: An International Journal (ACII)</a><script data-card-contents-for-user="21895691" type="text/json">{"id":21895691,"first_name":"Advanced Computational Intelligence: An International Journal","last_name":"(ACII)","domain_name":"independent","page_name":"AciiJournal","display_name":"Advanced Computational Intelligence: An International Journal (ACII)","profile_url":"https://independent.academia.edu/AciiJournal?f_ri=91047","photo":"https://0.academia-photos.com/21895691/7727776/60965479/s65_advanced_computational_intelligence_an_international_journal._acii_.png"}</script></span></span></li><li class="js-paper-rank-work_12235996 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12235996"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12235996, container: ".js-paper-rank-work_12235996", }); 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The ANN is developed to calculate the frequency and antenna's field. ANN is designed using multilayer perceptron networks (MLP). The results that were obtained accord the trained and tested data of ANN models. As a result, the ANN model is presented as a substitutional method to the detailed electromagnetic design of rectangular microstrip antenna.","downloadable_attachments":[{"id":37529794,"asset_id":12235996,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":21895691,"first_name":"Advanced Computational Intelligence: An International Journal","last_name":"(ACII)","domain_name":"independent","page_name":"AciiJournal","display_name":"Advanced Computational Intelligence: An International Journal (ACII)","profile_url":"https://independent.academia.edu/AciiJournal?f_ri=91047","photo":"https://0.academia-photos.com/21895691/7727776/60965479/s65_advanced_computational_intelligence_an_international_journal._acii_.png"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":212475,"name":"Electric Fields","url":"https://www.academia.edu/Documents/in/Electric_Fields?f_ri=91047"},{"id":238159,"name":"Multilayer Perceptron","url":"https://www.academia.edu/Documents/in/Multilayer_Perceptron?f_ri=91047"},{"id":303152,"name":"Novel food processing technologies (ultrasound, microwaves adn hydrogravity, pulsed electric fields)","url":"https://www.academia.edu/Documents/in/Novel_food_processing_technologies_ultrasound_microwaves_adn_hydrogravity_pulsed_electric_fields_?f_ri=91047"},{"id":652342,"name":"Rectangular Patch Microstrip Antenna","url":"https://www.academia.edu/Documents/in/Rectangular_Patch_Microstrip_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_8196293" data-work_id="8196293" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/8196293/Paper_Luis_Sanchez_Resonadores_en_Microondas">Paper Luis Sanchez Resonadores en Microondas</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The resonant circuits (low and high frequency) are widely used in electronic engineering in a variety of applications: filters, oscillators, frequency meters and tuned amplifiers. The chapter begins by recalling the basic theory of... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_8196293" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The resonant circuits (low and high frequency) are widely used in electronic engineering in a variety of applications: filters, oscillators, frequency meters and tuned amplifiers. The chapter begins by recalling the basic theory of resonant circuits, with technology that differentiates the resonant circuits in different frequency bands. Technologies exposed to microwave resonant circuits are: transmission lines, waveguides resonant cavities forming dielectric resonators constituting dielectric guides.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8196293" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3cde9a005dd804c25eadb3eee3379e5a" rel="nofollow" data-download="{"attachment_id":34626760,"asset_id":8196293,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/34626760/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="16063435" href="https://independent.academia.edu/lesanchezh">Luis Eduardo Sánchez Huertas</a><script data-card-contents-for-user="16063435" type="text/json">{"id":16063435,"first_name":"Luis Eduardo","last_name":"Sánchez Huertas","domain_name":"independent","page_name":"lesanchezh","display_name":"Luis Eduardo Sánchez Huertas","profile_url":"https://independent.academia.edu/lesanchezh?f_ri=91047","photo":"https://0.academia-photos.com/16063435/4361022/121969589/s65_luis_eduardo.sanchez_huertas.png"}</script></span></span></li><li class="js-paper-rank-work_8196293 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="8196293"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 8196293, container: ".js-paper-rank-work_8196293", }); 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The chapter begins by recalling the basic theory of resonant circuits, with technology that differentiates the resonant circuits in different frequency bands. Technologies exposed to microwave resonant circuits are: transmission lines, waveguides resonant cavities forming dielectric resonators constituting dielectric guides.","downloadable_attachments":[{"id":34626760,"asset_id":8196293,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":16063435,"first_name":"Luis Eduardo","last_name":"Sánchez Huertas","domain_name":"independent","page_name":"lesanchezh","display_name":"Luis Eduardo Sánchez Huertas","profile_url":"https://independent.academia.edu/lesanchezh?f_ri=91047","photo":"https://0.academia-photos.com/16063435/4361022/121969589/s65_luis_eduardo.sanchez_huertas.png"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":439473,"name":"Microwaves","url":"https://www.academia.edu/Documents/in/Microwaves?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5321315" data-work_id="5321315" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5321315/Electric_field_distribution_in_132_kV_one_piece_premolded_cable_joint_structures">Electric field distribution in 132 kV one piece premolded cable joint structures</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Defect in a cable joint is one of the main reasons of a power system being faulty. A defect can cause the electric field in the cable joint to become higher than the material surrounding the defect. This may result in partial discharge... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_5321315" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Defect in a cable joint is one of the main reasons of a power system being faulty. A defect can cause the electric field in the cable joint to become higher than the material surrounding the defect. This may result in partial discharge (PD) activity to occur within the defect site. When PD is repeating at the defect site, the material surrounding the defect will be affected, where PD may extend its path in the material. This may result in a breakdown at cable joint and consequently causes breakdown on the whole system. Therefore, the purpose of this research is to study the electric field distribution in 132 kV one piece premolded cable joint with and without the presence of defects. A better understanding of the electric field distribution at a cable joint can be attained by modelling the cable joint structure using finite element analysis (FEA) method. Through modelling and simulation results obtained in this work, an understanding of the electric field distribution in defects within cable joint structure can be enhanced. © 2012 IEEE. <br /> <br /><a href="http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416227" rel="nofollow">http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416227</a></div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5321315" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="0787f86926288308b1e89a2c649222fd" rel="nofollow" data-download="{"attachment_id":32482652,"asset_id":5321315,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32482652/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3330383" href="https://malaya.academia.edu/HazleeAzilIllias">Hazlee Azil Illias</a><script data-card-contents-for-user="3330383" type="text/json">{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}</script></span></span></li><li class="js-paper-rank-work_5321315 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="5321315"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 5321315, container: ".js-paper-rank-work_5321315", }); 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A defect can cause the electric field in the cable joint to become higher than the material surrounding the defect. This may result in partial discharge (PD) activity to occur within the defect site. When PD is repeating at the defect site, the material surrounding the defect will be affected, where PD may extend its path in the material. This may result in a breakdown at cable joint and consequently causes breakdown on the whole system. Therefore, the purpose of this research is to study the electric field distribution in 132 kV one piece premolded cable joint with and without the presence of defects. A better understanding of the electric field distribution at a cable joint can be attained by modelling the cable joint structure using finite element analysis (FEA) method. Through modelling and simulation results obtained in this work, an understanding of the electric field distribution in defects within cable joint structure can be enhanced. © 2012 IEEE.\r\n\r\nhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6416227 ","downloadable_attachments":[{"id":32482652,"asset_id":5321315,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3330383,"first_name":"Hazlee Azil","last_name":"Illias","domain_name":"malaya","page_name":"HazleeAzilIllias","display_name":"Hazlee Azil Illias","profile_url":"https://malaya.academia.edu/HazleeAzilIllias?f_ri=91047","photo":"https://0.academia-photos.com/3330383/1115197/151134276/s65_hazlee_azil.illias.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave 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Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":119784,"name":"Power Cables","url":"https://www.academia.edu/Documents/in/Power_Cables?f_ri=91047"},{"id":128802,"name":"Defects","url":"https://www.academia.edu/Documents/in/Defects?f_ri=91047"},{"id":303152,"name":"Novel food processing technologies (ultrasound, microwaves adn hydrogravity, pulsed electric fields)","url":"https://www.academia.edu/Documents/in/Novel_food_processing_technologies_ultrasound_microwaves_adn_hydrogravity_pulsed_electric_fields_?f_ri=91047"},{"id":936248,"name":"Partial Discharges","url":"https://www.academia.edu/Documents/in/Partial_Discharges?f_ri=91047"},{"id":975626,"name":"Molecular Modelling and Simulations","url":"https://www.academia.edu/Documents/in/Molecular_Modelling_and_Simulations?f_ri=91047"},{"id":1202036,"name":"Electric Field Distributions","url":"https://www.academia.edu/Documents/in/Electric_Field_Distributions?f_ri=91047"},{"id":1208576,"name":"Defect Sites","url":"https://www.academia.edu/Documents/in/Defect_Sites?f_ri=91047"},{"id":1208734,"name":"High Voltage Cable Joint","url":"https://www.academia.edu/Documents/in/High_Voltage_Cable_Joint?f_ri=91047"},{"id":1208735,"name":"Cable Joint","url":"https://www.academia.edu/Documents/in/Cable_Joint?f_ri=91047"},{"id":1208736,"name":"Cable Jointing","url":"https://www.academia.edu/Documents/in/Cable_Jointing?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_31044879" data-work_id="31044879" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/31044879/Bandpass_filter_with_improved_spurious_performance_using_modified_ring_dielectric_resonator_in_MIC_environment">Bandpass filter with improved spurious performance using modified ring dielectric resonator in MIC environment</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/31044879" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3c06061c025bc4939f3ac5e639b538cb" rel="nofollow" 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href="https://www.academia.edu/Documents/in/Optical_physics">Optical physics</a>, <script data-card-contents-for-ri="263152" type="text/json">{"id":263152,"name":"Optical physics","url":"https://www.academia.edu/Documents/in/Optical_physics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1237788" rel="nofollow" href="https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering">Electrical And Electronic Engineering</a><script data-card-contents-for-ri="1237788" type="text/json">{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=31044879]'), work: {"id":31044879,"title":"Bandpass filter with improved spurious performance using modified ring dielectric resonator in MIC environment","created_at":"2017-01-23T02:52:12.099-08:00","url":"https://www.academia.edu/31044879/Bandpass_filter_with_improved_spurious_performance_using_modified_ring_dielectric_resonator_in_MIC_environment?f_ri=91047","dom_id":"work_31044879","summary":null,"downloadable_attachments":[{"id":51478280,"asset_id":31044879,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":56887763,"first_name":"vishwa","last_name":"mishra","domain_name":"independent","page_name":"vishwamishra1","display_name":"vishwa mishra","profile_url":"https://independent.academia.edu/vishwamishra1?f_ri=91047","photo":"https://0.academia-photos.com/56887763/25764730/24445345/s65_vishwa.mishra.jpg"}],"research_interests":[{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":263152,"name":"Optical physics","url":"https://www.academia.edu/Documents/in/Optical_physics?f_ri=91047","nofollow":true},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_19199961" data-work_id="19199961" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/19199961/Microwave_properties_of_semi_insulating_silicon_carbide_between_10_and_40_GHz_and_at_cryogenic_temperatures">Microwave properties of semi-insulating silicon carbide between 10 and 40 GHz and at cryogenic temperatures</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The complex permittivity of high-purity, semi-insulating, axis-aligned monocrystalline 4H-SiC has been determined over the frequency range 10-40 GHz and at temperatures from 40 up to 295 K using whispering gallery modes and quasi TE 0; n;... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_19199961" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The complex permittivity of high-purity, semi-insulating, axis-aligned monocrystalline 4H-SiC has been determined over the frequency range 10-40 GHz and at temperatures from 40 up to 295 K using whispering gallery modes and quasi TE 0; n; p modes in a dielectric resonator constructed from seven layers of a 375 lm thick wafer. The real part of the permittivity (in the plane of the wafers) was found to be nearly independent of frequency. The dielectric loss tangent of 4H-SiC increases with temperature above 100 K. All results were obtained for the semiconductor in darkness.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/19199961" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="99c620854c99535e8cc304c9eae707f7" rel="nofollow" data-download="{"attachment_id":40486638,"asset_id":19199961,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40486638/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="39180677" href="https://hust-cn.academia.edu/JeanMichelLEFLOCH">Jean-Michel LE FLOCH</a><script data-card-contents-for-user="39180677" type="text/json">{"id":39180677,"first_name":"Jean-Michel","last_name":"LE FLOCH","domain_name":"hust-cn","page_name":"JeanMichelLEFLOCH","display_name":"Jean-Michel LE FLOCH","profile_url":"https://hust-cn.academia.edu/JeanMichelLEFLOCH?f_ri=91047","photo":"https://0.academia-photos.com/39180677/12718282/14146039/s65_jean-michel.le_floch.jpg"}</script></span></span></li><li class="js-paper-rank-work_19199961 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="19199961"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 19199961, container: ".js-paper-rank-work_19199961", }); 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$(".js-view-count[data-work-id=19199961]").text(description); $(".js-view-count-work_19199961").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_19199961").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="19199961"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">9</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="9138" rel="nofollow" href="https://www.academia.edu/Documents/in/Applied_Physics">Applied Physics</a>, <script data-card-contents-for-ri="9138" type="text/json">{"id":9138,"name":"Applied Physics","url":"https://www.academia.edu/Documents/in/Applied_Physics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="80414" rel="nofollow" href="https://www.academia.edu/Documents/in/Mathematical_Sciences">Mathematical Sciences</a>, <script data-card-contents-for-ri="80414" type="text/json">{"id":80414,"name":"Mathematical Sciences","url":"https://www.academia.edu/Documents/in/Mathematical_Sciences?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="86555" rel="nofollow" href="https://www.academia.edu/Documents/in/Silicon_Carbide">Silicon Carbide</a><script data-card-contents-for-ri="86555" type="text/json">{"id":86555,"name":"Silicon Carbide","url":"https://www.academia.edu/Documents/in/Silicon_Carbide?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=19199961]'), work: {"id":19199961,"title":"Microwave properties of semi-insulating silicon carbide between 10 and 40 GHz and at cryogenic temperatures","created_at":"2015-11-29T16:31:28.950-08:00","url":"https://www.academia.edu/19199961/Microwave_properties_of_semi_insulating_silicon_carbide_between_10_and_40_GHz_and_at_cryogenic_temperatures?f_ri=91047","dom_id":"work_19199961","summary":"The complex permittivity of high-purity, semi-insulating, axis-aligned monocrystalline 4H-SiC has been determined over the frequency range 10-40 GHz and at temperatures from 40 up to 295 K using whispering gallery modes and quasi TE 0; n; p modes in a dielectric resonator constructed from seven layers of a 375 lm thick wafer. The real part of the permittivity (in the plane of the wafers) was found to be nearly independent of frequency. The dielectric loss tangent of 4H-SiC increases with temperature above 100 K. All results were obtained for the semiconductor in darkness.","downloadable_attachments":[{"id":40486638,"asset_id":19199961,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":39180677,"first_name":"Jean-Michel","last_name":"LE FLOCH","domain_name":"hust-cn","page_name":"JeanMichelLEFLOCH","display_name":"Jean-Michel LE FLOCH","profile_url":"https://hust-cn.academia.edu/JeanMichelLEFLOCH?f_ri=91047","photo":"https://0.academia-photos.com/39180677/12718282/14146039/s65_jean-michel.le_floch.jpg"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=91047","nofollow":true},{"id":9138,"name":"Applied Physics","url":"https://www.academia.edu/Documents/in/Applied_Physics?f_ri=91047","nofollow":true},{"id":80414,"name":"Mathematical Sciences","url":"https://www.academia.edu/Documents/in/Mathematical_Sciences?f_ri=91047","nofollow":true},{"id":86555,"name":"Silicon Carbide","url":"https://www.academia.edu/Documents/in/Silicon_Carbide?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":96502,"name":"Applied","url":"https://www.academia.edu/Documents/in/Applied?f_ri=91047"},{"id":118582,"name":"Physical sciences","url":"https://www.academia.edu/Documents/in/Physical_sciences?f_ri=91047"},{"id":389575,"name":"Dielectric Loss","url":"https://www.academia.edu/Documents/in/Dielectric_Loss?f_ri=91047"},{"id":1554801,"name":"Complex permittivity","url":"https://www.academia.edu/Documents/in/Complex_permittivity?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_10120949" data-work_id="10120949" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/10120949/Impedance_bandwidth_improvement_of_compact_low_permittivity_RDRA_using_parasitic_conducting_metallic_strip">Impedance bandwidth improvement of compact low permittivity RDRA using parasitic conducting metallic strip</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, a compact broadband, low profile rectangular dielectric resonator antenna (RDRA) is presented. The RDRA is fed with a modified stepped microstrip feed to ensure efficient coupling between the RDR and feeder. Impedance... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_10120949" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, a compact broadband, low profile rectangular dielectric resonator antenna (RDRA) is presented. The RDRA is fed with a modified stepped microstrip feed to ensure efficient coupling between the RDR and feeder. Impedance improvement and broadband operation is achieved by loading the RDR with conducting metallic strip of suitable width, which results in a new resonance closes to the antenna operating frequency. The performance of the proposed antenna has been significantly improved and leads to a wider operating bandwidth (up to 22 %). Parametric investigations for different geometrical parameters have been carried out. The frequency characteristics and radiation performance of the proposed antenna are successfully optimized with numerical experimentation techniques and experimentally verified. Measurements and simulation results based on a 3D full-wave EM simulator are in excellent agreement.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/10120949" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="348719dab5a0a2415484368c2ca1a65c" rel="nofollow" data-download="{"attachment_id":36236745,"asset_id":10120949,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/36236745/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="24414049" href="https://wwwsvu.academia.edu/HanyAtallah">Hany A . Atallah</a><script data-card-contents-for-user="24414049" type="text/json">{"id":24414049,"first_name":"Hany","last_name":"Atallah","domain_name":"wwwsvu","page_name":"HanyAtallah","display_name":"Hany A . 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The RDRA is fed with a modified stepped microstrip feed to ensure efficient coupling between the RDR and feeder. Impedance improvement and broadband operation is achieved by loading the RDR with conducting metallic strip of suitable width, which results in a new resonance closes to the antenna operating frequency. The performance of the proposed antenna has been significantly improved and leads to a wider operating bandwidth (up to 22 %). Parametric investigations for different geometrical parameters have been carried out. The frequency characteristics and radiation performance of the proposed antenna are successfully optimized with numerical experimentation techniques and experimentally verified. Measurements and simulation results based on a 3D full-wave EM simulator are in excellent agreement.","downloadable_attachments":[{"id":36236745,"asset_id":10120949,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":24414049,"first_name":"Hany","last_name":"Atallah","domain_name":"wwwsvu","page_name":"HanyAtallah","display_name":"Hany A . Atallah","profile_url":"https://wwwsvu.academia.edu/HanyAtallah?f_ri=91047","photo":"https://0.academia-photos.com/24414049/6586586/11124419/s65_hany.atallah.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_19446601" data-work_id="19446601" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/19446601/Design_and_Development_of_Branch_Line_Coupler_Using_Split_Ring_Resonator_Cell">Design and Development of Branch Line Coupler Using Split Ring Resonator Cell</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this paper, microwave element is designed using the concept of split ring resonator. In this branch line coupler is loaded with ring resonator structure to reduce overall size than conventional element and to have excellent stop band... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_19446601" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this paper, microwave element is designed<br />using the concept of split ring resonator. In this branch<br />line coupler is loaded with ring resonator structure to<br />reduce overall size than conventional element and to<br />have excellent stop band characteristics. The proposed<br />coupler has good performance than conventional<br />element and also hasharmonic suppression in addition.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/19446601" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3355686a0cbebacbfb48dbfa0cf46a83" rel="nofollow" data-download="{"attachment_id":40624811,"asset_id":19446601,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40624811/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="28642884" href="https://annauniv.academia.edu/IJARBESTINTERNATIONALJOURNAL">IJARBEST INTERNATIONAL SCIENTIFIC PUBLICATIONS</a><script data-card-contents-for-user="28642884" type="text/json">{"id":28642884,"first_name":"IJARBEST","last_name":"INTERNATIONAL SCIENTIFIC PUBLICATIONS","domain_name":"annauniv","page_name":"IJARBESTINTERNATIONALJOURNAL","display_name":"IJARBEST INTERNATIONAL SCIENTIFIC PUBLICATIONS","profile_url":"https://annauniv.academia.edu/IJARBESTINTERNATIONALJOURNAL?f_ri=91047","photo":"https://0.academia-photos.com/28642884/8113012/9081728/s65_ijarbest.international_journal.jpg"}</script></span></span></li><li class="js-paper-rank-work_19446601 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="19446601"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 19446601, container: ".js-paper-rank-work_19446601", }); 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In this branch\nline coupler is loaded with ring resonator structure to\nreduce overall size than conventional element and to\nhave excellent stop band characteristics. The proposed\ncoupler has good performance than conventional\nelement and also hasharmonic suppression in addition.","downloadable_attachments":[{"id":40624811,"asset_id":19446601,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":28642884,"first_name":"IJARBEST","last_name":"INTERNATIONAL SCIENTIFIC PUBLICATIONS","domain_name":"annauniv","page_name":"IJARBESTINTERNATIONALJOURNAL","display_name":"IJARBEST INTERNATIONAL SCIENTIFIC PUBLICATIONS","profile_url":"https://annauniv.academia.edu/IJARBESTINTERNATIONALJOURNAL?f_ri=91047","photo":"https://0.academia-photos.com/28642884/8113012/9081728/s65_ijarbest.international_journal.jpg"}],"research_interests":[{"id":49,"name":"Electrical Engineering","url":"https://www.academia.edu/Documents/in/Electrical_Engineering?f_ri=91047","nofollow":true},{"id":2087,"name":"Antennas \u0026 Radio Wave Propagation","url":"https://www.academia.edu/Documents/in/Antennas_and_Radio_Wave_Propagation?f_ri=91047","nofollow":true},{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":16440,"name":"Resonators","url":"https://www.academia.edu/Documents/in/Resonators?f_ri=91047"},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"},{"id":784472,"name":"Parameteric Studies","url":"https://www.academia.edu/Documents/in/Parameteric_Studies?f_ri=91047"},{"id":834730,"name":"Control of Distributed Parameter Systems","url":"https://www.academia.edu/Documents/in/Control_of_Distributed_Parameter_Systems?f_ri=91047"},{"id":1146437,"name":"Frequency Response","url":"https://www.academia.edu/Documents/in/Frequency_Response?f_ri=91047"},{"id":1183557,"name":"Parameters for Site Analysis","url":"https://www.academia.edu/Documents/in/Parameters_for_Site_Analysis?f_ri=91047"},{"id":1556938,"name":"complementary-split ring resonators (CSRRs)","url":"https://www.academia.edu/Documents/in/complementary-split_ring_resonators_CSRRs_?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_9689438" data-work_id="9689438" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/9689438/Analysis_of_rectangular_waveguide">Analysis of rectangular waveguide</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/9689438" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="5e8bb47ac453b96aea44a5465ecd7024" rel="nofollow" data-download="{"attachment_id":35881705,"asset_id":9689438,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" 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href="https://www.academia.edu/Documents/in/Electromagnetic_metamaterials">Electromagnetic metamaterials</a>, <script data-card-contents-for-ri="6650" type="text/json">{"id":6650,"name":"Electromagnetic metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="7405" rel="nofollow" href="https://www.academia.edu/Documents/in/Computational_Electromagnetics">Computational Electromagnetics</a><script data-card-contents-for-ri="7405" type="text/json">{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=9689438]'), work: {"id":9689438,"title":"Analysis of rectangular 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metamaterials","url":"https://www.academia.edu/Documents/in/Electromagnetic_metamaterials?f_ri=91047","nofollow":true},{"id":7405,"name":"Computational Electromagnetics","url":"https://www.academia.edu/Documents/in/Computational_Electromagnetics?f_ri=91047","nofollow":true},{"id":35230,"name":"Electromagnetic Fields and Microwave Techniques","url":"https://www.academia.edu/Documents/in/Electromagnetic_Fields_and_Microwave_Techniques?f_ri=91047"},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_17839794 coauthored" data-work_id="17839794" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/17839794/Implementation_of_Packaged_Integrated_Antenna_With_Embedded_Front_End_for_Bluetooth_Applications">Implementation of Packaged Integrated Antenna With Embedded Front End for Bluetooth Applications</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented here. The integration was done on... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_17839794" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented here. The integration was done on FR4 substrates, which is totally compatible with today's printed circuit board manufacturing capability. A commercially available Bluetooth integrated chip was chosen as the chipset of our demonstrator, and a package integrated antenna together with an embedded front end completes the system in package integration. The front end developed here is based on an embedded meander line combline filter and an embedded transformer balun. The filter has a 35% area reduction when compared with the classical combline filter and similar performance. The balun has the coils distributed on three layers that minimized the board area needed it and optimizes the performances. The proposed packaged integrated antenna approach is successfully demonstrated here and the new module shows excellent performance when compared with a commercial solution, surpassing the normal Bluetooth class II dongle range which is up to 10 m and increasing the module range up to 120 m without an extra power amplifier.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/17839794" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e2b22a4b886f46259c584f0b169538c0" rel="nofollow" data-download="{"attachment_id":39738116,"asset_id":17839794,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/39738116/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="37759867" href="https://soton.academia.edu/MihaiRotaru">Mihai Rotaru</a><script data-card-contents-for-user="37759867" type="text/json">{"id":37759867,"first_name":"Mihai","last_name":"Rotaru","domain_name":"soton","page_name":"MihaiRotaru","display_name":"Mihai Rotaru","profile_url":"https://soton.academia.edu/MihaiRotaru?f_ri=91047","photo":"https://0.academia-photos.com/37759867/10619475/11853693/s65_mihai.rotaru.jpg"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-17839794">+1</span><div class="hidden js-additional-users-17839794"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://lboro.academia.edu/YingYingLim">Ying Ying Lim</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-17839794'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-17839794').html(); 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The integration was done on FR4 substrates, which is totally compatible with today's printed circuit board manufacturing capability. A commercially available Bluetooth integrated chip was chosen as the chipset of our demonstrator, and a package integrated antenna together with an embedded front end completes the system in package integration. The front end developed here is based on an embedded meander line combline filter and an embedded transformer balun. The filter has a 35% area reduction when compared with the classical combline filter and similar performance. The balun has the coils distributed on three layers that minimized the board area needed it and optimizes the performances. The proposed packaged integrated antenna approach is successfully demonstrated here and the new module shows excellent performance when compared with a commercial solution, surpassing the normal Bluetooth class II dongle range which is up to 10 m and increasing the module range up to 120 m without an extra power amplifier.","downloadable_attachments":[{"id":39738116,"asset_id":17839794,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":37759867,"first_name":"Mihai","last_name":"Rotaru","domain_name":"soton","page_name":"MihaiRotaru","display_name":"Mihai Rotaru","profile_url":"https://soton.academia.edu/MihaiRotaru?f_ri=91047","photo":"https://0.academia-photos.com/37759867/10619475/11853693/s65_mihai.rotaru.jpg"},{"id":1919394,"first_name":"Ying Ying","last_name":"Lim","domain_name":"lboro","page_name":"YingYingLim","display_name":"Ying Ying Lim","profile_url":"https://lboro.academia.edu/YingYingLim?f_ri=91047","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":89056,"name":"Printed Circuit Board","url":"https://www.academia.edu/Documents/in/Printed_Circuit_Board?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":96825,"name":"Manufacturing Engineering","url":"https://www.academia.edu/Documents/in/Manufacturing_Engineering?f_ri=91047","nofollow":true},{"id":741094,"name":"Power Amplifier","url":"https://www.academia.edu/Documents/in/Power_Amplifier?f_ri=91047","nofollow":true},{"id":969892,"name":"Front end","url":"https://www.academia.edu/Documents/in/Front_end?f_ri=91047"},{"id":1237788,"name":"Electrical And Electronic Engineering","url":"https://www.academia.edu/Documents/in/Electrical_And_Electronic_Engineering?f_ri=91047"},{"id":1380988,"name":"System In Package","url":"https://www.academia.edu/Documents/in/System_In_Package?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_8901513" data-work_id="8901513" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/8901513/A_dielectric_resonator_for_measurements_of_complex_permittivity_of_low_loss_dielectric_materials_as_a_function_of_temperature">A dielectric resonator for measurements of complex permittivity of low loss dielectric materials as a function of temperature</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">An application of a TE 01δ mode dielectric resonator is described for precise measurements of complex permittivity and the thermal effects on permittivity for isotropic dielectric materials. The Rayleigh-Ritz technique was employed to... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_8901513" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">An application of a TE 01δ mode dielectric resonator is described for precise measurements of complex permittivity and the thermal effects on permittivity for isotropic dielectric materials. The Rayleigh-Ritz technique was employed to find a rigorous relationship between permittivity, resonant frequency, and the dimensions of the resonant structure, with relative computational accuracy of less than 10 −3 . The influence of conductor loss and its temperature dependence was taken into account in the dielectric loss tangent evaluation. Complex permittivities of several materials, including cross-linked polystyrene, polytetrafluoroethylene, and alumina, were measured in the temperature range of 300-400 K. Absolute uncertainties of relative permittivity measurements were estimated to be smaller than 0.2%, limited mainly by uncertainty in the sample dimensions. For properly chosen sample dimensions, materials with dielectric loss tangents in the range of 5 × 10 −7 to 5 × 10 −3 can be measured using the TE 01δ mode dielectric resonator.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8901513" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="65362cdb3b04377fe9c4519d9a76a9a6" rel="nofollow" data-download="{"attachment_id":35230352,"asset_id":8901513,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/35230352/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="19585927" href="https://independent.academia.edu/JerzyKrupka">Jerzy Krupka</a><script data-card-contents-for-user="19585927" type="text/json">{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}</script></span></span></li><li class="js-paper-rank-work_8901513 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="8901513"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 8901513, container: ".js-paper-rank-work_8901513", }); 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$(".js-view-count[data-work-id=8901513]").text(description); $(".js-view-count-work_8901513").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_8901513").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="8901513"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="5023" rel="nofollow" href="https://www.academia.edu/Documents/in/Microwave">Microwave</a>, <script data-card-contents-for-ri="5023" type="text/json">{"id":5023,"name":"Microwave","url":"https://www.academia.edu/Documents/in/Microwave?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="47732" rel="nofollow" href="https://www.academia.edu/Documents/in/RF_and_Microwave_Systems">RF and Microwave Systems</a>, <script data-card-contents-for-ri="47732" type="text/json">{"id":47732,"name":"RF and Microwave Systems","url":"https://www.academia.edu/Documents/in/RF_and_Microwave_Systems?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="77113" rel="nofollow" href="https://www.academia.edu/Documents/in/Alumina">Alumina</a>, <script data-card-contents-for-ri="77113" type="text/json">{"id":77113,"name":"Alumina","url":"https://www.academia.edu/Documents/in/Alumina?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a><script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=8901513]'), work: {"id":8901513,"title":"A dielectric resonator for measurements of complex permittivity of low loss dielectric materials as a function of temperature","created_at":"2014-10-21T22:14:15.061-07:00","url":"https://www.academia.edu/8901513/A_dielectric_resonator_for_measurements_of_complex_permittivity_of_low_loss_dielectric_materials_as_a_function_of_temperature?f_ri=91047","dom_id":"work_8901513","summary":"An application of a TE 01δ mode dielectric resonator is described for precise measurements of complex permittivity and the thermal effects on permittivity for isotropic dielectric materials. The Rayleigh-Ritz technique was employed to find a rigorous relationship between permittivity, resonant frequency, and the dimensions of the resonant structure, with relative computational accuracy of less than 10 −3 . The influence of conductor loss and its temperature dependence was taken into account in the dielectric loss tangent evaluation. Complex permittivities of several materials, including cross-linked polystyrene, polytetrafluoroethylene, and alumina, were measured in the temperature range of 300-400 K. Absolute uncertainties of relative permittivity measurements were estimated to be smaller than 0.2%, limited mainly by uncertainty in the sample dimensions. For properly chosen sample dimensions, materials with dielectric loss tangents in the range of 5 × 10 −7 to 5 × 10 −3 can be measured using the TE 01δ mode dielectric resonator.","downloadable_attachments":[{"id":35230352,"asset_id":8901513,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":19585927,"first_name":"Jerzy","last_name":"Krupka","domain_name":"independent","page_name":"JerzyKrupka","display_name":"Jerzy Krupka","profile_url":"https://independent.academia.edu/JerzyKrupka?f_ri=91047","photo":"https://0.academia-photos.com/19585927/5480205/6246614/s65_jerzy.krupka.jpg"}],"research_interests":[{"id":5023,"name":"Microwave","url":"https://www.academia.edu/Documents/in/Microwave?f_ri=91047","nofollow":true},{"id":47732,"name":"RF and Microwave Systems","url":"https://www.academia.edu/Documents/in/RF_and_Microwave_Systems?f_ri=91047","nofollow":true},{"id":77113,"name":"Alumina","url":"https://www.academia.edu/Documents/in/Alumina?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":911984,"name":"Polytetrafluoroethylene","url":"https://www.academia.edu/Documents/in/Polytetrafluoroethylene?f_ri=91047"},{"id":1554801,"name":"Complex permittivity","url":"https://www.academia.edu/Documents/in/Complex_permittivity?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22455444" data-work_id="22455444" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22455444/Dielectric_characterisation_of_Barium_Fluoride_at_cryogenic_temperatures_using_TE_011_and_quasi_TE_0mn_mode_dielectric_resonators">Dielectric characterisation of Barium Fluoride at cryogenic temperatures using TE 011 and quasi TE 0mn mode dielectric resonators</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Barium Fluoride (BaF 2 ), mainly used in optical applications, has similar properties to those of CaF 2 but better stability under environmental conditions. In this paper, we report measurements of loss tangent and the real part of the... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_22455444" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Barium Fluoride (BaF 2 ), mainly used in optical applications, has similar properties to those of CaF 2 but better stability under environmental conditions. In this paper, we report measurements of loss tangent and the real part of the relative permittivity e r of single crystal BaF 2 in the temperature range from 14 to 290 K at frequencies of 8, 10.4, 12.1, 17.6, 21.1 and 24.4 GHz. Microwave properties of BaF 2 were determined by measurements of the resonance frequency and the unloaded Q-factor of TE 011 and quasi TE 0mn modes cylindrical cavities containing the sample under test. Two techniques namely Hakki-Coleman Dielectric Resonator and dielectric post resonators have been used for characterizing the dielectric material. Losses due to the uncalibrated cables and adaptors inside the cryocooler are accounted in the calculation of unloaded Q-factor using the Transmission Mode Q-Factor data processing technique. The permittivity of BaF 2 exhibited a 5% increase from 6.9 (14 K) to 7.35 (290 K). The loss tangent increased from 1 · 10 À5 to 1.1 · 10 À4 over the measured temperature range, 14-290 K at a frequency of 10.4 GHz. The measured microwave properties show that BaF 2 can be used in many microwave devices.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/22455444" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="dd29f31e4e03e16c3683f936e7f679c5" rel="nofollow" data-download="{"attachment_id":43072704,"asset_id":22455444,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43072704/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="34378004" href="https://independent.academia.edu/TobarMichael">Michael Tobar</a><script data-card-contents-for-user="34378004" type="text/json">{"id":34378004,"first_name":"Michael","last_name":"Tobar","domain_name":"independent","page_name":"TobarMichael","display_name":"Michael Tobar","profile_url":"https://independent.academia.edu/TobarMichael?f_ri=91047","photo":"https://0.academia-photos.com/34378004/37070922/31504120/s65_michael.tobar.jpg"}</script></span></span></li><li class="js-paper-rank-work_22455444 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="22455444"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 22455444, container: ".js-paper-rank-work_22455444", }); 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$(".js-view-count[data-work-id=22455444]").text(description); $(".js-view-count-work_22455444").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_22455444").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="22455444"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="506" rel="nofollow" href="https://www.academia.edu/Documents/in/Cryogenics">Cryogenics</a>, <script data-card-contents-for-ri="506" type="text/json">{"id":506,"name":"Cryogenics","url":"https://www.academia.edu/Documents/in/Cryogenics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="80799" rel="nofollow" href="https://www.academia.edu/Documents/in/Classical_Physics">Classical Physics</a>, <script data-card-contents-for-ri="80799" type="text/json">{"id":80799,"name":"Classical Physics","url":"https://www.academia.edu/Documents/in/Classical_Physics?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="91047" rel="nofollow" href="https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna">Dielectric Resonator Antenna</a>, <script data-card-contents-for-ri="91047" type="text/json">{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="394438" rel="nofollow" href="https://www.academia.edu/Documents/in/Single_Crystal">Single Crystal</a><script data-card-contents-for-ri="394438" type="text/json">{"id":394438,"name":"Single Crystal","url":"https://www.academia.edu/Documents/in/Single_Crystal?f_ri=91047","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=22455444]'), work: {"id":22455444,"title":"Dielectric characterisation of Barium Fluoride at cryogenic temperatures using TE 011 and quasi TE 0mn mode dielectric resonators","created_at":"2016-02-25T15:28:31.917-08:00","url":"https://www.academia.edu/22455444/Dielectric_characterisation_of_Barium_Fluoride_at_cryogenic_temperatures_using_TE_011_and_quasi_TE_0mn_mode_dielectric_resonators?f_ri=91047","dom_id":"work_22455444","summary":"Barium Fluoride (BaF 2 ), mainly used in optical applications, has similar properties to those of CaF 2 but better stability under environmental conditions. In this paper, we report measurements of loss tangent and the real part of the relative permittivity e r of single crystal BaF 2 in the temperature range from 14 to 290 K at frequencies of 8, 10.4, 12.1, 17.6, 21.1 and 24.4 GHz. Microwave properties of BaF 2 were determined by measurements of the resonance frequency and the unloaded Q-factor of TE 011 and quasi TE 0mn modes cylindrical cavities containing the sample under test. Two techniques namely Hakki-Coleman Dielectric Resonator and dielectric post resonators have been used for characterizing the dielectric material. Losses due to the uncalibrated cables and adaptors inside the cryocooler are accounted in the calculation of unloaded Q-factor using the Transmission Mode Q-Factor data processing technique. The permittivity of BaF 2 exhibited a 5% increase from 6.9 (14 K) to 7.35 (290 K). The loss tangent increased from 1 · 10 À5 to 1.1 · 10 À4 over the measured temperature range, 14-290 K at a frequency of 10.4 GHz. The measured microwave properties show that BaF 2 can be used in many microwave devices.","downloadable_attachments":[{"id":43072704,"asset_id":22455444,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34378004,"first_name":"Michael","last_name":"Tobar","domain_name":"independent","page_name":"TobarMichael","display_name":"Michael Tobar","profile_url":"https://independent.academia.edu/TobarMichael?f_ri=91047","photo":"https://0.academia-photos.com/34378004/37070922/31504120/s65_michael.tobar.jpg"}],"research_interests":[{"id":506,"name":"Cryogenics","url":"https://www.academia.edu/Documents/in/Cryogenics?f_ri=91047","nofollow":true},{"id":80799,"name":"Classical Physics","url":"https://www.academia.edu/Documents/in/Classical_Physics?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":394438,"name":"Single Crystal","url":"https://www.academia.edu/Documents/in/Single_Crystal?f_ri=91047","nofollow":true},{"id":554780,"name":"Interdisciplinary Engineering","url":"https://www.academia.edu/Documents/in/Interdisciplinary_Engineering?f_ri=91047"},{"id":581652,"name":"Data Processing","url":"https://www.academia.edu/Documents/in/Data_Processing?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_18553991" data-work_id="18553991" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/18553991/RECTANGULAR_DIELECTRIC_RESONATOR_ANTENNA_CONFIGURATIONS_FOR_MOBILE_COMMUNICATION_APPLICATIONS">RECTANGULAR DIELECTRIC RESONATOR ANTENNA CONFIGURATIONS FOR MOBILE COMMUNICATION APPLICATIONS</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Experimental investigations on Microstrip line excited Dielectric Resonator Antenna configurations suitable for Mobile Communication applications are reported. High permittivity (εrd = 48) resonator samples with different aspect ratios... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_18553991" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Experimental investigations on Microstrip line excited Dielectric Resonator Antenna configurations suitable for Mobile Communication applications are reported. High permittivity (εrd = 48) resonator samples with different aspect ratios are employed for the study. Theoretical analysis performed using FDTD method is also presented.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/18553991" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="8fb31db352fccf09feda37da9e5e8905" rel="nofollow" data-download="{"attachment_id":40125986,"asset_id":18553991,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40125986/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="28539757" href="https://oulu.academia.edu/MailadilSebastian">Mailadil Sebastian</a><script data-card-contents-for-user="28539757" type="text/json">{"id":28539757,"first_name":"Mailadil","last_name":"Sebastian","domain_name":"oulu","page_name":"MailadilSebastian","display_name":"Mailadil Sebastian","profile_url":"https://oulu.academia.edu/MailadilSebastian?f_ri=91047","photo":"https://0.academia-photos.com/28539757/8573514/9578083/s65_mailadil.sebastian.jpg"}</script></span></span></li><li class="js-paper-rank-work_18553991 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="18553991"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 18553991, container: ".js-paper-rank-work_18553991", }); 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High permittivity (εrd = 48) resonator samples with different aspect ratios are employed for the study. Theoretical analysis performed using FDTD method is also presented.","downloadable_attachments":[{"id":40125986,"asset_id":18553991,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":28539757,"first_name":"Mailadil","last_name":"Sebastian","domain_name":"oulu","page_name":"MailadilSebastian","display_name":"Mailadil Sebastian","profile_url":"https://oulu.academia.edu/MailadilSebastian?f_ri=91047","photo":"https://0.academia-photos.com/28539757/8573514/9578083/s65_mailadil.sebastian.jpg"}],"research_interests":[{"id":18391,"name":"Mobile Communication","url":"https://www.academia.edu/Documents/in/Mobile_Communication?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":184965,"name":"Theoretical Analysis","url":"https://www.academia.edu/Documents/in/Theoretical_Analysis?f_ri=91047","nofollow":true},{"id":1189635,"name":"Aspect Ratio","url":"https://www.academia.edu/Documents/in/Aspect_Ratio?f_ri=91047","nofollow":true},{"id":1250589,"name":"Microstrip Line","url":"https://www.academia.edu/Documents/in/Microstrip_Line?f_ri=91047"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_60758516" data-work_id="60758516" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/60758516/Dielectric_resonator_antenna_array_at_2_4_GHz">Dielectric resonator antenna array at 2.4 GHz</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Hak cipta terpelihara. Tiada dibenarkan mengeluar ulang mana-mana bahagian artikel, ilustrasi, dan isi kandungan buku ini dalam apa juga bentuk dan cara apa jua sama ada dengan cara elektronik, fotokopi, mekanik, atau cara lain sebelum... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_60758516" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Hak cipta terpelihara. Tiada dibenarkan mengeluar ulang mana-mana bahagian artikel, ilustrasi, dan isi kandungan buku ini dalam apa juga bentuk dan cara apa jua sama ada dengan cara elektronik, fotokopi, mekanik, atau cara lain sebelum mendapat izin bertulis daripada Timbalan Naib Canselor (Penyelidikan dan Inovasi), Universiti Teknologi Malaysia, 81310 Skudai, Johor Darul Ta'zim, Malaysia. Perundingan tertakluk kepada perkiraan royalti atau honorarium.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/60758516" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="bfefde5897e9dfc6bcec37546a2e0a12" rel="nofollow" data-download="{"attachment_id":74059021,"asset_id":60758516,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/74059021/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="179993011" href="https://independent.academia.edu/ThelahaMasri">Thelaha Masri</a><script data-card-contents-for-user="179993011" type="text/json">{"id":179993011,"first_name":"Thelaha","last_name":"Masri","domain_name":"independent","page_name":"ThelahaMasri","display_name":"Thelaha Masri","profile_url":"https://independent.academia.edu/ThelahaMasri?f_ri=91047","photo":"https://0.academia-photos.com/179993011/68806769/57194907/s65_thelaha.masri.jpeg"}</script></span></span></li><li class="js-paper-rank-work_60758516 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="60758516"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 60758516, container: ".js-paper-rank-work_60758516", }); 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Tiada dibenarkan mengeluar ulang mana-mana bahagian artikel, ilustrasi, dan isi kandungan buku ini dalam apa juga bentuk dan cara apa jua sama ada dengan cara elektronik, fotokopi, mekanik, atau cara lain sebelum mendapat izin bertulis daripada Timbalan Naib Canselor (Penyelidikan dan Inovasi), Universiti Teknologi Malaysia, 81310 Skudai, Johor Darul Ta'zim, Malaysia. Perundingan tertakluk kepada perkiraan royalti atau honorarium.","downloadable_attachments":[{"id":74059021,"asset_id":60758516,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":179993011,"first_name":"Thelaha","last_name":"Masri","domain_name":"independent","page_name":"ThelahaMasri","display_name":"Thelaha Masri","profile_url":"https://independent.academia.edu/ThelahaMasri?f_ri=91047","photo":"https://0.academia-photos.com/179993011/68806769/57194907/s65_thelaha.masri.jpeg"}],"research_interests":[{"id":76039,"name":"APMC","url":"https://www.academia.edu/Documents/in/APMC?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":153400,"name":"Impedance Matching","url":"https://www.academia.edu/Documents/in/Impedance_Matching?f_ri=91047","nofollow":true},{"id":636490,"name":"Transmission Line","url":"https://www.academia.edu/Documents/in/Transmission_Line?f_ri=91047","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_53093074" data-work_id="53093074" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/53093074/Tunable_dielectric_resonator_bandpass_filter">Tunable dielectric resonator bandpass filter</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A simple but efective technique has been applied to magnetically tune the quasi-TEoll mode dielectric resonators. The tuning was achieved by means of the fkrrite rod situated centrally in the dielectric resonator and extending over the... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_53093074" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A simple but efective technique has been applied to magnetically tune the quasi-TEoll mode dielectric resonators. The tuning was achieved by means of the fkrrite rod situated centrally in the dielectric resonator and extending over the shield The fkrrite parameters were changed by DC magnetic field. The method assures the high quality factor of the resonator, over 3.4% tuning range and suflcientb good spurious response. The tuning has been achieved by means of the ferrite rod situated centrally in the dielectric resonator and extending over the shield to the electromagnet system. The ferrite parameters were changed by DC magnetic field produced by the DC current. The method assures the high quality factor of the resonator, 3.4% tuning range and quite good spurious resppnse. Measured filter characteristics show low insertion loss 0.32 + 0.65 dB and excellent retum loss better than 30 dB at center frequency in the full tuning range.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/53093074" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="ac6f52ab32ed9d1e41d2f5948a26038f" rel="nofollow" data-download="{"attachment_id":70041971,"asset_id":53093074,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/70041971/download_file?st=MTc0MDU2NjMwNiw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="64200082" href="https://independent.academia.edu/AAbramowicz">Adam Abramowicz</a><script data-card-contents-for-user="64200082" type="text/json">{"id":64200082,"first_name":"Adam","last_name":"Abramowicz","domain_name":"independent","page_name":"AAbramowicz","display_name":"Adam Abramowicz","profile_url":"https://independent.academia.edu/AAbramowicz?f_ri=91047","photo":"https://0.academia-photos.com/64200082/160323197/150016095/s65_adam.abramowicz.png"}</script></span></span></li><li class="js-paper-rank-work_53093074 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="53093074"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 53093074, container: ".js-paper-rank-work_53093074", }); 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The tuning was achieved by means of the fkrrite rod situated centrally in the dielectric resonator and extending over the shield The fkrrite parameters were changed by DC magnetic field. The method assures the high quality factor of the resonator, over 3.4% tuning range and suflcientb good spurious response. The tuning has been achieved by means of the ferrite rod situated centrally in the dielectric resonator and extending over the shield to the electromagnet system. The ferrite parameters were changed by DC magnetic field produced by the DC current. The method assures the high quality factor of the resonator, 3.4% tuning range and quite good spurious resppnse. Measured filter characteristics show low insertion loss 0.32 + 0.65 dB and excellent retum loss better than 30 dB at center frequency in the full tuning range.","downloadable_attachments":[{"id":70041971,"asset_id":53093074,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":64200082,"first_name":"Adam","last_name":"Abramowicz","domain_name":"independent","page_name":"AAbramowicz","display_name":"Adam Abramowicz","profile_url":"https://independent.academia.edu/AAbramowicz?f_ri=91047","photo":"https://0.academia-photos.com/64200082/160323197/150016095/s65_adam.abramowicz.png"}],"research_interests":[{"id":34754,"name":"Magnetic field","url":"https://www.academia.edu/Documents/in/Magnetic_field?f_ri=91047","nofollow":true},{"id":91047,"name":"Dielectric Resonator Antenna","url":"https://www.academia.edu/Documents/in/Dielectric_Resonator_Antenna?f_ri=91047","nofollow":true},{"id":103186,"name":"Quality 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