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href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_sv.wikipedia.org&uselang=sv" class=""><span>Stöd Wikipedia</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:Skapa_konto&returnto=Bandbredd" title="Du uppmuntras att skapa ett konto och logga in, men det är inte obligatoriskt" class=""><span>Skapa konto</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:Inloggning&returnto=Bandbredd" title="Inloggning ger tillgång till fler funktioner för den som vill skriva och redigera artiklar. 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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logga in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sidor för utloggade redigerare <a href="/wiki/Hj%C3%A4lp:Introduktion" aria-label="Läs mer om redigering"><span>läs mer</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:Mina_bidrag" title="En lista över redigeringar från denna IP-adress [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:Min_diskussion" title="Diskussion om redigeringar från det här IP-numret [n]" accesskey="n"><span>Diskussion</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Webbplats"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innehåll" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innehåll</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">dölj</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inledning</div> </a> </li> <li id="toc-Användning_inom_datortekniken" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Användning_inom_datortekniken"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Användning inom datortekniken</span> </div> </a> <ul id="toc-Användning_inom_datortekniken-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Översikt" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Översikt"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Översikt</span> </div> </a> <ul id="toc-Översikt-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Analoga_system" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Analoga_system"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Analoga system</span> </div> </a> <ul id="toc-Analoga_system-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referenser" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referenser"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Referenser</span> </div> </a> <ul id="toc-Referenser-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header 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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Bandbredd</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå till en artikel på ett annat språk. Tillgänglig på 44 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-44" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">44 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Bandwydte" title="Bandwydte – afrikaans" lang="af" hreflang="af" data-title="Bandwydte" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%B1%D8%B6_%D9%86%D8%B7%D8%A7%D9%82" title="عرض نطاق – arabiska" lang="ar" hreflang="ar" data-title="عرض نطاق" data-language-autonym="العربية" data-language-local-name="arabiska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A6%AE%E0%A7%8D%E0%A6%AA%E0%A6%BE%E0%A6%82%E0%A6%95%E0%A6%AC%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%AA%E0%A7%8D%E0%A6%A4%E0%A6%BF_(%E0%A6%B8%E0%A6%82%E0%A6%95%E0%A7%87%E0%A6%A4_%E0%A6%AA%E0%A7%8D%E0%A6%B0%E0%A6%95%E0%A7%8D%E0%A6%B0%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%9C%E0%A6%BE%E0%A6%A4%E0%A6%95%E0%A6%B0%E0%A6%A3)" title="কম্পাংকব্যাপ্তি (সংকেত প্রক্রিয়াজাতকরণ) – bengali" lang="bn" hreflang="bn" data-title="কম্পাংকব্যাপ্তি (সংকেত প্রক্রিয়াজাতকরণ)" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Amplada_de_banda" title="Amplada de banda – katalanska" lang="ca" hreflang="ca" data-title="Amplada de banda" data-language-autonym="Català" data-language-local-name="katalanska" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C5%A0%C3%AD%C5%99ka_p%C3%A1sma" title="Šířka pásma – tjeckiska" lang="cs" hreflang="cs" data-title="Šířka pásma" data-language-autonym="Čeština" data-language-local-name="tjeckiska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/B%C3%A5ndbredde_(signalbehandling)" title="Båndbredde (signalbehandling) – danska" lang="da" hreflang="da" data-title="Båndbredde (signalbehandling)" data-language-autonym="Dansk" data-language-local-name="danska" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Bandbreite" title="Bandbreite – tyska" lang="de" hreflang="de" data-title="Bandbreite" data-language-autonym="Deutsch" data-language-local-name="tyska" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ribalaius" title="Ribalaius – estniska" lang="et" hreflang="et" data-title="Ribalaius" data-language-autonym="Eesti" data-language-local-name="estniska" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%95%CF%8D%CF%81%CE%BF%CF%82_%CE%B6%CF%8E%CE%BD%CE%B7%CF%82" title="Εύρος ζώνης – grekiska" lang="el" hreflang="el" data-title="Εύρος ζώνης" data-language-autonym="Ελληνικά" data-language-local-name="grekiska" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Bandwidth_(signal_processing)" title="Bandwidth (signal processing) – engelska" lang="en" hreflang="en" data-title="Bandwidth (signal processing)" data-language-autonym="English" data-language-local-name="engelska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ancho_de_banda" title="Ancho de banda – spanska" lang="es" hreflang="es" data-title="Ancho de banda" data-language-autonym="Español" data-language-local-name="spanska" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Banda_zabalera" title="Banda zabalera – baskiska" lang="eu" hreflang="eu" data-title="Banda zabalera" data-language-autonym="Euskara" data-language-local-name="baskiska" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D9%87%D9%86%D8%A7%DB%8C_%D8%A8%D8%A7%D9%86%D8%AF" title="پهنای باند – persiska" lang="fa" hreflang="fa" data-title="پهنای باند" data-language-autonym="فارسی" data-language-local-name="persiska" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Bande_passante" title="Bande passante – franska" lang="fr" hreflang="fr" data-title="Bande passante" data-language-autonym="Français" data-language-local-name="franska" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Bandaleithead" title="Bandaleithead – iriska" lang="ga" hreflang="ga" data-title="Bandaleithead" data-language-autonym="Gaeilge" data-language-local-name="iriska" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Ancho_de_banda" title="Ancho de banda – galiciska" lang="gl" hreflang="gl" data-title="Ancho de banda" data-language-autonym="Galego" data-language-local-name="galiciska" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%8C%80%EC%97%AD%ED%8F%AD_(%EC%8B%A0%ED%98%B8_%EC%B2%98%EB%A6%AC)" title="대역폭 (신호 처리) – koreanska" lang="ko" hreflang="ko" data-title="대역폭 (신호 처리)" data-language-autonym="한국어" data-language-local-name="koreanska" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AC%E0%A5%88%E0%A4%82%E0%A4%A1%E0%A4%B5%E0%A4%BF%E0%A4%A5" title="बैंडविथ – hindi" lang="hi" hreflang="hi" data-title="बैंडविथ" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Lebar_pita" title="Lebar pita – indonesiska" lang="id" hreflang="id" data-title="Lebar pita" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiska" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Larghezza_di_banda" title="Larghezza di banda – italienska" lang="it" hreflang="it" data-title="Larghezza di banda" data-language-autonym="Italiano" data-language-local-name="italienska" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%95%D7%97%D7%91_%D7%A1%D7%A8%D7%98" title="רוחב סרט – hebreiska" lang="he" hreflang="he" data-title="רוחב סרט" data-language-autonym="עברית" data-language-local-name="hebreiska" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Kipimo_data_(elektroniki)" title="Kipimo data (elektroniki) – swahili" lang="sw" hreflang="sw" data-title="Kipimo data (elektroniki)" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Amplitudo_fasciae" title="Amplitudo fasciae – latin" lang="la" hreflang="la" data-title="Amplitudo fasciae" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Joslas_platums_(sign%C4%81lu_apstr%C4%81de)" title="Joslas platums (signālu apstrāde) – lettiska" lang="lv" hreflang="lv" data-title="Joslas platums (signālu apstrāde)" data-language-autonym="Latviešu" data-language-local-name="lettiska" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/S%C3%A1vsz%C3%A9less%C3%A9g" title="Sávszélesség – ungerska" lang="hu" hreflang="hu" data-title="Sávszélesség" data-language-autonym="Magyar" data-language-local-name="ungerska" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A8%D0%B8%D1%80%D0%B8%D0%BD%D0%B0_%D0%BD%D0%B0_%D1%87%D0%B5%D1%81%D1%82%D0%BE%D1%82%D0%B5%D0%BD_%D0%BE%D0%BF%D1%81%D0%B5%D0%B3" title="Ширина на честотен опсег – makedonska" lang="mk" hreflang="mk" data-title="Ширина на честотен опсег" data-language-autonym="Македонски" data-language-local-name="makedonska" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Bandbreedte" title="Bandbreedte – nederländska" lang="nl" hreflang="nl" data-title="Bandbreedte" data-language-autonym="Nederlands" data-language-local-name="nederländska" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%B8%AF%E5%9F%9F%E5%B9%85" title="帯域幅 – japanska" lang="ja" hreflang="ja" data-title="帯域幅" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/B%C3%A5ndbredde" title="Båndbredde – norskt bokmål" lang="nb" hreflang="nb" data-title="Båndbredde" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Bandbreidde" title="Bandbreidde – nynorska" lang="nn" hreflang="nn" data-title="Bandbreidde" data-language-autonym="Norsk nynorsk" data-language-local-name="nynorska" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pasmo_przenoszenia" title="Pasmo przenoszenia – polska" lang="pl" hreflang="pl" data-title="Pasmo przenoszenia" data-language-autonym="Polski" data-language-local-name="polska" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Largura_de_banda" title="Largura de banda – portugisiska" lang="pt" hreflang="pt" data-title="Largura de banda" data-language-autonym="Português" data-language-local-name="portugisiska" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BB%D0%BE%D1%81%D0%B0_%D0%BF%D1%80%D0%BE%D0%BF%D1%83%D1%81%D0%BA%D0%B0%D0%BD%D0%B8%D1%8F" title="Полоса пропускания – ryska" lang="ru" hreflang="ru" data-title="Полоса пропускания" data-language-autonym="Русский" data-language-local-name="ryska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Bandwidth_(signal_processing)" title="Bandwidth (signal processing) – Simple English" lang="en-simple" hreflang="en-simple" data-title="Bandwidth (signal processing)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Pasovna_%C5%A1irina" title="Pasovna širina – slovenska" lang="sl" hreflang="sl" data-title="Pasovna širina" data-language-autonym="Slovenščina" data-language-local-name="slovenska" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A8%D0%B8%D1%80%D0%B8%D0%BD%D0%B0_%D1%84%D1%80%D0%B5%D0%BA%D0%B2%D0%B5%D0%BD%D1%82%D0%BD%D0%BE%D0%B3_%D0%BE%D0%BF%D1%81%D0%B5%D0%B3%D0%B0" title="Ширина фреквентног опсега – serbiska" lang="sr" hreflang="sr" data-title="Ширина фреквентног опсега" data-language-autonym="Српски / srpski" data-language-local-name="serbiska" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/%C5%A0irina_frekventnog_opsega" title="Širina frekventnog opsega – serbokroatiska" lang="sh" hreflang="sh" data-title="Širina frekventnog opsega" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatiska" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Rubakpita" title="Rubakpita – sundanesiska" lang="su" hreflang="su" data-title="Rubakpita" data-language-autonym="Sunda" data-language-local-name="sundanesiska" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kaistanleveys" title="Kaistanleveys – finska" lang="fi" hreflang="fi" data-title="Kaistanleveys" data-language-autonym="Suomi" data-language-local-name="finska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AF%88%E0%AE%AF%E0%AE%95%E0%AE%B2%E0%AE%AE%E0%AF%8D" title="பட்டையகலம் – tamil" lang="ta" hreflang="ta" data-title="பட்டையகலம்" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Bant_geni%C5%9Fli%C4%9Fi" title="Bant genişliği – turkiska" lang="tr" hreflang="tr" data-title="Bant genişliği" data-language-autonym="Türkçe" data-language-local-name="turkiska" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A8%D0%B8%D1%80%D0%B8%D0%BD%D0%B0_%D1%81%D0%BC%D1%83%D0%B3%D0%B8_%D0%BF%D1%80%D0%BE%D0%BF%D1%83%D1%81%D0%BA%D0%B0%D0%BD%D0%BD%D1%8F" title="Ширина смуги пропускання – ukrainska" lang="uk" hreflang="uk" data-title="Ширина смуги пропускання" data-language-autonym="Українська" data-language-local-name="ukrainska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%A0%BB%E5%AF%AC" title="頻寬 – kantonesiska" lang="yue" hreflang="yue" data-title="頻寬" data-language-autonym="粵語" data-language-local-name="kantonesiska" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%B8%A6%E5%AE%BD" title="带宽 – kinesiska" lang="zh" hreflang="zh" data-title="带宽" data-language-autonym="中文" data-language-local-name="kinesiska" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q249998#sitelinks-wikipedia" title="Redigera interwikilänkar" class="wbc-editpage">Redigera länkar</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namnrymder"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Bandbredd" title="Visa innehållssidan [c]" accesskey="c"><span>Artikel</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Diskussion:Bandbredd&action=edit&redlink=1" rel="discussion" 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class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Utseende"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Utseende</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">dölj</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Från Wikipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="sv" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:Bandwidth.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/250px-Bandwidth.svg.png" decoding="async" width="250" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/375px-Bandwidth.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Bandwidth.svg/500px-Bandwidth.svg.png 2x" data-file-width="542" data-file-height="381" /></a><figcaption>Bandbredd är ett frekvensomfång.</figcaption></figure> <p><b>Bandbredd</b> är skillnaden mellan den övre och den lägre avbrytande <a href="/wiki/Frekvens" title="Frekvens">frekvensen</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-reference-link-bracket">[</span>1<span class="cite-reference-link-bracket">]</span></a></sup> Begreppet används till exempel vid informationsöverföring i <a href="/wiki/Radio" title="Radio">radiokommunikation</a> (nätverkets överföringskapacitet) eller via ett signalfilter. Bandbredd mäts vanligtvis i enheten <a href="/wiki/Hertz" title="Hertz">Hertz</a> (Hz). Bandbredd är ett centralt begrepp i många områden, till exempel inom elektronik, radiokommunikation och signalbehandling. I samband med <a href="/wiki/Internet" title="Internet">Internet</a> används begreppet något oegentligt för <i>mängden</i> överförda data. </p><p>Vid <a href="/wiki/Sampling_(fysik)" title="Sampling (fysik)">sampling</a> räknas bandbredden som ekvivalent med <a href="/wiki/Nyquistfrekvensen" title="Nyquistfrekvensen">Nyquistfrekvensen</a>, det vill säga bandbreddfrekvensen är lika med halva samplingsfrekvensen. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Användning_inom_datortekniken"><span id="Anv.C3.A4ndning_inom_datortekniken"></span>Användning inom datortekniken</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bandbredd&veaction=edit&section=1" title="Redigera avsnitt: Användning inom datortekniken" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Bandbredd&action=edit&section=1" title="Redigera avsnitts källkod: Användning inom datortekniken"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Inom datorteknik/frekvensanalys definieras bandbredd som bredden på det spann av frekvenser för vilka dämpningen (i till exempel kabeln) är lägre än den kritiska <span style="white-space:nowrap">3 <a href="/wiki/Decibel" title="Decibel">dB</a>-nivån</span>. Utanför detta frekvensspann dämpas de logiska signalnivåerna så pass mycket att informationen tolkas slumpmässigt av mottagaren och det går därför inte att använda dessa frekvenser vid dataöverföring. Denna dämpning begränsar alltså mängden data som går att överföra per sekund i en viss kabel. </p><p>Ordet "bandbredd" har även kommit att bli en felaktig synonym för <a href="/wiki/%C3%96verf%C3%B6ringskapacitet" title="Överföringskapacitet">överföringskapacitet</a>, alltså den mängd data som kan överföras per tidsenhet, till exempel över <a href="/wiki/Modem" title="Modem">modem</a> eller <a href="/wiki/Buss_(elektronisk_term)" title="Buss (elektronisk term)">bussar</a>. Ur teknisk synvinkel är detta ett helt felaktigt språkbruk, eftersom bandbredd mäts i <a href="/wiki/Hertz" title="Hertz">hertz</a> och överföringskapacitet i bitar per sekund. Om det beror på sammanblandning av begreppen bandbredd och <a href="/wiki/Bredband" title="Bredband">bredband</a> eller det faktum att överföringskapaciteten är proportionell mot bandbredden är oklart. </p><p>Majoriteten av webbhotell mäter i bandbredd när man talar om överföringskapacitet.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-reference-link-bracket">[</span>2<span class="cite-reference-link-bracket">]</span></a></sup> Det började i USA när företagen på ett enkelt sätt skulle beskriva vad en kund får för sina pengar, istället för att skriva ur teknisk synvinkel. Sedan dess har denna alternativa betydelse av begreppet blivit allmänt använd. </p> <div class="mw-heading mw-heading2"><h2 id="Översikt"><span id=".C3.96versikt"></span>Översikt</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bandbredd&veaction=edit&section=2" title="Redigera avsnitt: Översikt" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Bandbredd&action=edit&section=2" title="Redigera avsnitts källkod: Översikt"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Bandbredd är ett viktigt begrepp inom många användningsområden. Till exempel när man pratar om radiokommunikation. </p> <div class="mw-heading mw-heading2"><h2 id="Analoga_system">Analoga system</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bandbredd&veaction=edit&section=3" title="Redigera avsnitt: Analoga system" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Bandbredd&action=edit&section=3" title="Redigera avsnitts källkod: Analoga system"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>För analoga signaler, som man matematiskt kan se på som funktioner av tid. Bandbredd BW eller Δf är bredden, mätt i hertz. Bandbredd i en signal är ett mått på hur snabbt dess parametrar, till exempel svängningsvidd och fas, fluktuerar med hänsyn till tiden. Vilket resulterar i att ju större brandbredd, desto snabbare är växlingen i signalparameterna. Själva ordet bandbredd syftar på signaler, som tidigare nämnt, dock kan det också hänvisa till system. I det sistnämnda fallet så innebär det att systemet har en särskild bandbredd som betyder att systemet kan behandla signaler av just den bandbredden. </p> <div class="mw-heading mw-heading2"><h2 id="Referenser">Referenser</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Bandbredd&veaction=edit&section=4" title="Redigera avsnitt: Referenser" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Bandbredd&action=edit&section=4" title="Redigera avsnitts källkod: Referenser"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <span class="reference-text"><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/bandbredd">”bandbredd - Uppslagsverk - NE.se”</a>. <i><span>www.ne.se</span></i><span class="printonly">. <a rel="nofollow" class="external free" href="https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/bandbredd">https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/bandbredd</a></span><span class="reference-accessdate">. Läst 7 mars 2022</span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=bandbredd+-+Uppslagsverk+-+NE.se&rft.atitle=www.ne.se&rft_id=https%3A%2F%2Fwww.ne.se%2Fuppslagsverk%2Fencyklopedi%2Fl%25C3%25A5ng%2Fbandbredd&rfr_id=info:sid/en.wikipedia.org:Bandbredd"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <span class="reference-text"><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="http://www.svenskawebbhotellslistan.se/vad-ar-bandbredd/">”Vad är bandbredd? | Svenska webbhotell”</a><span class="printonly">. <a rel="nofollow" class="external free" href="http://www.svenskawebbhotellslistan.se/vad-ar-bandbredd/">http://www.svenskawebbhotellslistan.se/vad-ar-bandbredd/</a></span><span class="reference-accessdate">. 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