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Filter</title> <meta name="description" content="Search results for: Low Pass Filter"> <meta name="keywords" content="Low Pass Filter"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Low Pass Filter"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 753</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Low Pass Filter</h1> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">753</span> A New Current-mode Multifunction Filter with High Impedance Outputs Using Minimum Number of Passive Elements </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Mehmet%20Sagbas">Mehmet Sagbas</a>, <a href="https://publications.waset.org/search?q=Kemal%20Fidanboylu"> Kemal Fidanboylu</a>, <a href="https://publications.waset.org/search?q=Mehmet%20C.%20Bayram"> Mehmet C. Bayram</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>A new current-mode multifunction filter using minimum number of passive elements is proposed. The proposed filter has single-input and four high-impedance outputs. It uses four passive elements (two capacitors and two resistors) and four dual output second generation current conveyors. Each output provides a different filter response, namely, low-pass, high-pass, band-pass and band-reject. The sensitivity analysis is also carried out on both ideal and non-ideal filter configurations. The validity of the proposed filter is verified through PSPICE simulations.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Active%20filter" title="Active filter">Active filter</a>, <a href="https://publications.waset.org/search?q=Universal%20filter" title=" Universal filter"> Universal filter</a>, <a href="https://publications.waset.org/search?q=Currentconveyors." title=" Currentconveyors."> Currentconveyors.</a> </p> <a href="https://publications.waset.org/7800/a-new-current-mode-multifunction-filter-with-high-impedance-outputs-using-minimum-number-of-passive-elements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/7800/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/7800/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/7800/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/7800/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/7800/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/7800/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/7800/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/7800/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/7800/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/7800/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/7800.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1517</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">752</span> Linear Phase High Pass FIR Filter Design using Improved Particle Swarm Optimization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Sangeeta%20Mondal">Sangeeta Mondal</a>, <a href="https://publications.waset.org/search?q=Vasundhara"> Vasundhara</a>, <a href="https://publications.waset.org/search?q=Rajib%20Kar">Rajib Kar</a>, <a href="https://publications.waset.org/search?q=Durbadal%20Mandal"> Durbadal Mandal</a>, <a href="https://publications.waset.org/search?q=S.%20P.%20Ghoshal"> S. P. Ghoshal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an optimal design of linear phase digital high pass finite impulse response (FIR) filter using Improved Particle Swarm Optimization (IPSO). In the design process, the filter length, pass band and stop band frequencies, feasible pass band and stop band ripple sizes are specified. FIR filter design is a multi-modal optimization problem. An iterative method is introduced to find the optimal solution of FIR filter design problem. Evolutionary algorithms like real code genetic algorithm (RGA), particle swarm optimization (PSO), improved particle swarm optimization (IPSO) have been used in this work for the design of linear phase high pass FIR filter. IPSO is an improved PSO that proposes a new definition for the velocity vector and swarm updating and hence the solution quality is improved. A comparison of simulation results reveals the optimization efficacy of the algorithm over the prevailing optimization techniques for the solution of the multimodal, nondifferentiable, highly non-linear, and constrained FIR filter design problems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=FIR%20Filter" title="FIR Filter">FIR Filter</a>, <a href="https://publications.waset.org/search?q=IPSO" title=" IPSO"> IPSO</a>, <a href="https://publications.waset.org/search?q=GA" title=" GA"> GA</a>, <a href="https://publications.waset.org/search?q=PSO" title=" PSO"> PSO</a>, <a href="https://publications.waset.org/search?q=Parks%20and%20McClellan%0AAlgorithm" title=" Parks and McClellan Algorithm"> Parks and McClellan Algorithm</a>, <a href="https://publications.waset.org/search?q=Evolutionary%20Optimization" title=" Evolutionary Optimization"> Evolutionary Optimization</a>, <a href="https://publications.waset.org/search?q=High%20Pass%20Filter" title=" High Pass Filter"> High Pass Filter</a> </p> <a href="https://publications.waset.org/8397/linear-phase-high-pass-fir-filter-design-using-improved-particle-swarm-optimization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/8397/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/8397/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/8397/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/8397/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/8397/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/8397/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/8397/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/8397/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/8397/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/8397/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/8397.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">3099</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">751</span> Stability Issues on an Implemented All-Pass Filter Circuitry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=%C3%81kos%20Pint%C3%A9r">脕kos Pint茅r</a>, <a href="https://publications.waset.org/search?q=Istv%C3%A1n%20D%C3%A9nes"> Istv谩n D茅nes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The so-called all-pass filter circuits are commonly used in the field of signal processing, control and measurement. Being connected to capacitive loads, these circuits tend to loose their stability; therefore the elaborate analysis of their dynamic behavior is necessary. The compensation methods intending to increase the stability of such circuits are discussed in this paper, including the socalled lead-lag compensation technique being treated in detail. For the dynamic modeling, a two-port network model of the all-pass filter is being derived. The results of the model analysis show, that effective lead-lag compensation can be achieved, alone by the optimization of the circuit parameters; therefore the application of additional electric components are not needed to fulfill the stability requirement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=all-pass%20filter" title="all-pass filter">all-pass filter</a>, <a href="https://publications.waset.org/search?q=frequency%20compensation" title=" frequency compensation"> frequency compensation</a>, <a href="https://publications.waset.org/search?q=stability" title=" stability"> stability</a>, <a href="https://publications.waset.org/search?q=linear%20modeling" title=" linear modeling"> linear modeling</a> </p> <a href="https://publications.waset.org/3582/stability-issues-on-an-implemented-all-pass-filter-circuitry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/3582/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/3582/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/3582/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/3582/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/3582/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/3582/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/3582/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/3582/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/3582/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/3582/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/3582.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2516</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">750</span> Two Active Elements Based All-Pass Section Suited for Current-Mode Cascading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=J.%20Mohan">J. Mohan</a>, <a href="https://publications.waset.org/search?q=S.%20Maheshwari"> S. Maheshwari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>A new circuit topology realizing a first-order currentmode all-pass filter is proposed using two dual-output second generation current conveyor and two passive components. The circuit possesses low-input and high-output impedance, which makes it ideal for current-mode systems. The proposed circuit is verified through PSPICE simulation results.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=active%20filter" title="active filter">active filter</a>, <a href="https://publications.waset.org/search?q=all-pass%20filter" title=" all-pass filter"> all-pass filter</a>, <a href="https://publications.waset.org/search?q=current-mode" title=" current-mode"> current-mode</a>, <a href="https://publications.waset.org/search?q=current%20conveyor." title=" current conveyor."> current conveyor.</a> </p> <a href="https://publications.waset.org/17135/two-active-elements-based-all-pass-section-suited-for-current-mode-cascading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/17135/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/17135/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/17135/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/17135/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/17135/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/17135/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/17135/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/17135/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/17135/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/17135/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/17135.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1623</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">749</span> Swarm Intelligence based Optimal Linear Phase FIR High Pass Filter Design using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Sangeeta%20Mandal">Sangeeta Mandal</a>, <a href="https://publications.waset.org/search?q=Rajib%20Kar"> Rajib Kar</a>, <a href="https://publications.waset.org/search?q=Durbadal%20Mandal"> Durbadal Mandal</a>, <a href="https://publications.waset.org/search?q=Sakti%20Prasad%20Ghoshal"> Sakti Prasad Ghoshal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, an optimal design of linear phase digital high pass finite impulse response (FIR) filter using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach (PSO-CFIWA) has been presented. In the design process, the filter length, pass band and stop band frequencies, feasible pass band and stop band ripple sizes are specified. FIR filter design is a multi-modal optimization problem. The conventional gradient based optimization techniques are not efficient for digital filter design. Given the filter specifications to be realized, the PSO-CFIWA algorithm generates a set of optimal filter coefficients and tries to meet the ideal frequency response characteristic. In this paper, for the given problem, the designs of the optimal FIR high pass filters of different orders have been performed. The simulation results have been compared to those obtained by the well accepted algorithms such as Parks and McClellan algorithm (PM), genetic algorithm (GA). The results justify that the proposed optimal filter design approach using PSOCFIWA outperforms PM and GA, not only in the accuracy of the designed filter but also in the convergence speed and solution quality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=FIR%20Filter%3B%20PSO-CFIWA%3B%20PSO%3B%20Parks%20and%20McClellanAlgorithm" title="FIR Filter; PSO-CFIWA; PSO; Parks and McClellanAlgorithm">FIR Filter; PSO-CFIWA; PSO; Parks and McClellanAlgorithm</a>, <a href="https://publications.waset.org/search?q=Evolutionary%20Optimization%20Technique%3B%20MagnitudeResponse%3B%20Convergence%3B%20High%20Pass%20Filter" title=" Evolutionary Optimization Technique; MagnitudeResponse; Convergence; High Pass Filter"> Evolutionary Optimization Technique; MagnitudeResponse; Convergence; High Pass Filter</a> </p> <a href="https://publications.waset.org/15281/swarm-intelligence-based-optimal-linear-phase-fir-high-pass-filter-design-using-particle-swarm-optimization-with-constriction-factor-and-inertia-weight-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/15281/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/15281/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/15281/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/15281/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/15281/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/15281/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/15281/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/15281/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/15281/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/15281/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/15281.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1554</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">748</span> Design of Two-Channel Quadrature Mirror Filter Banks Using Digital All-Pass Filters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Ju-Hong%20Lee">Ju-Hong Lee</a>, <a href="https://publications.waset.org/search?q=Yi-Lin%20Shieh"> Yi-Lin Shieh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p class="Abstract" style="text-indent:10.2pt">The paper deals with the minimax design of two-channel linear-phase (LP) quadrature mirror filter (QMF) banks using infinite impulse response (IIR) digital all-pass filters (DAFs). Based on the theory of two-channel QMF banks using two IIR DAFs, the design problem is appropriately formulated to result in an appropriate Chebyshev approximation for the desired group delay responses of the IIR DAFs and the magnitude response of the low-pass analysis filter. Through a frequency sampling and iterative approximation method, the design problem can be solved by utilizing a weighted least squares approach. The resulting two-channel QMF banks can possess approximately LP response without magnitude distortion. Simulation results are presented for illustration and comparison.<o:p></o:p></p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Chebyshev%20approximation" title="Chebyshev approximation">Chebyshev approximation</a>, <a href="https://publications.waset.org/search?q=Digital%20All-Pass%20Filter" title=" Digital All-Pass Filter"> Digital All-Pass Filter</a>, <a href="https://publications.waset.org/search?q=Quadrature%20Mirror%20Filter" title=" Quadrature Mirror Filter"> Quadrature Mirror Filter</a>, <a href="https://publications.waset.org/search?q=Weighted%20Least%20Squares." title=" Weighted Least Squares. "> Weighted Least Squares. </a> </p> <a href="https://publications.waset.org/17055/design-of-two-channel-quadrature-mirror-filter-banks-using-digital-all-pass-filters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/17055/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/17055/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/17055/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/17055/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/17055/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/17055/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/17055/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/17055/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/17055/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/17055/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/17055.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2741</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">747</span> Current-Mode Resistorless SIMO Universal Filter and Four-Phase Quadrature Oscillator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Jie%20Jin">Jie Jin </a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>In this paper, a new CMOS current-mode single input and multi-outputs (SIMO) universal filter and quadrature oscillator with a similar circuit are proposed. The circuits only consist of three Current differencing transconductance amplifiers (CDTA) and two grounded capacitors, which are resistorless, and they are suitable for monolithic integration. The universal filter uses minimum CDTAs and passive elements to realize SIMO type low-pass (LP), high-pass (HP), band-pass (BP) band-stop (BS) and all-pass (AP) filter functions simultaneously without any component matching conditions. The angular frequency (ω0) and the quality factor (Q) of the proposed filter can be electronically controlled and tuned orthogonal. By some modifications of the filter, a new current-mode four-phase quadrature oscillator (QO) can be obtained easily. The condition of oscillation (CO) and frequency of oscillation (FO) of the QO can be controlled electronically and independently through the bias current of the CDTAs, and it is suitable for variable frequency oscillator. Moreover, all the passive and active sensitivities of the circuits are low. SPICE simulation results are included to confirm the theory.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Universal%20Filter" title="Universal Filter">Universal Filter</a>, <a href="https://publications.waset.org/search?q=Quadrature%20Oscillator" title=" Quadrature Oscillator"> Quadrature Oscillator</a>, <a href="https://publications.waset.org/search?q=Current%20mode" title=" Current mode"> Current mode</a>, <a href="https://publications.waset.org/search?q=Current%20differencing%20transconductance%20amplifiers." title=" Current differencing transconductance amplifiers. "> Current differencing transconductance amplifiers. </a> </p> <a href="https://publications.waset.org/9996922/current-mode-resistorless-simo-universal-filter-and-four-phase-quadrature-oscillator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9996922/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9996922/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9996922/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9996922/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9996922/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9996922/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9996922/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9996922/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9996922/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9996922/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9996922.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1951</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">746</span> An 880 / 1760 MHz Dual Bandwidth Active RC Filter for 60 GHz Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Sanghoon%20Park">Sanghoon Park</a>, <a href="https://publications.waset.org/search?q=Kijin%20Kim"> Kijin Kim</a>, <a href="https://publications.waset.org/search?q=Kwangho%20Ahn"> Kwangho Ahn</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>An active RC filters with a 880 / 1760 MHz dual bandwidth tuning ability is present for 60 GHz unlicensed band applications. A third order Butterworth low-pass filter utilizes two Cherry-Hooper amplifiers to satisfy the very high bandwidth requirements of an amplifier. The low-pass filter is fabricated in 90nm standard CMOS process. Drawing 6.7 mW from 1.2 V power supply, the low frequency gains of the filter are -2.5 and -4.1 dB, and the output third order intercept points (OIP3) are +2.2 and +1.9 dBm for the single channel and channel bonding conditions, respectively.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Butterworth%20filter" title="Butterworth filter">Butterworth filter</a>, <a href="https://publications.waset.org/search?q=active%20RC" title=" active RC"> active RC</a>, <a href="https://publications.waset.org/search?q=60%20GHz" title=" 60 GHz"> 60 GHz</a>, <a href="https://publications.waset.org/search?q=CMOS" title=" CMOS"> CMOS</a>, <a href="https://publications.waset.org/search?q=dual%0D%0Abandwidth" title=" dual bandwidth"> dual bandwidth</a>, <a href="https://publications.waset.org/search?q=Cherry-Hooper%20amplifier." title=" Cherry-Hooper amplifier."> Cherry-Hooper amplifier.</a> </p> <a href="https://publications.waset.org/7159/an-880-1760-mhz-dual-bandwidth-active-rc-filter-for-60-ghz-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/7159/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/7159/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/7159/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/7159/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/7159/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/7159/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/7159/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/7159/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/7159/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/7159/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/7159.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2228</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">745</span> Supremacy of Differential Evolution Algorithm in Designing Multiplier-Less Low-Pass FIR Filter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Abhijit%20Chandra">Abhijit Chandra</a>, <a href="https://publications.waset.org/search?q=Sudipta%20Chattopadhyay"> Sudipta Chattopadhyay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>In this communication, we have made an attempt to design multiplier-less low-pass finite impulse response (FIR) filter with the aid of various mutation strategies of Differential Evolution (DE) algorithm. Impulse response coefficient of the designed FIR filter has been represented as sums or differences of powers of two. Performance of the proposed filter has been evaluated in terms of its frequency response and associated hardware cost. Supremacy of our approach has been substantiated by comparing our result with many of the existing multiplier-less filter design algorithms of recent interest. It has also been demonstrated that DE-optimized filter outperforms Genetic Algorithm (GA) based design by a large margin.  Hardware efficiency of our algorithm has further been validated by implementing those filters on a Field Programmable Gate Array (FPGA) chip.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Convergence%20speed" title="Convergence speed">Convergence speed</a>, <a href="https://publications.waset.org/search?q=Differential%20Evolution%20%28DE%29" title=" Differential Evolution (DE)"> Differential Evolution (DE)</a>, <a href="https://publications.waset.org/search?q=error%20histogram" title=" error histogram"> error histogram</a>, <a href="https://publications.waset.org/search?q=finite%20impulse%20response%20%28FIR%29%20filter" title=" finite impulse response (FIR) filter"> finite impulse response (FIR) filter</a>, <a href="https://publications.waset.org/search?q=total%20power%20of%20two%20%28TPT%29" title=" total power of two (TPT)"> total power of two (TPT)</a>, <a href="https://publications.waset.org/search?q=zero-valued%20filter%20coefficient%20%28ZFC%29." title=" zero-valued filter coefficient (ZFC)."> zero-valued filter coefficient (ZFC).</a> </p> <a href="https://publications.waset.org/9997723/supremacy-of-differential-evolution-algorithm-in-designing-multiplier-less-low-pass-fir-filter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9997723/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9997723/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9997723/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9997723/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9997723/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9997723/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9997723/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9997723/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9997723/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9997723/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9997723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2155</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">744</span> Resistor-less Current-mode Universal Biquad Filter Using CCTAs and Grounded Capacitors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=T.%20Thosdeekoraphat">T. Thosdeekoraphat</a>, <a href="https://publications.waset.org/search?q=S.%20Summart"> S. Summart</a>, <a href="https://publications.waset.org/search?q=C.%20Saetiaw"> C. Saetiaw</a>, <a href="https://publications.waset.org/search?q=S.%20Santalunai"> S. Santalunai</a>, <a href="https://publications.waset.org/search?q=C.%20Thongsopa"> C. Thongsopa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This article presents a current-mode universal biquadratic filter. The proposed circuit can apparently provide standard functions of the biquad filter: low-pass, high-pass, bandpass, band-reject and all-pass functions. The circuit uses 4 current controlled transconductance amplifiers (CCTAs) and 2 grounded capacitors. In addition, the pole frequency and quality factor can be adjusted by electronic method by adjusting the bias currents of the CCTA. The proposed circuit uses only grounded capacitors without additional external resistors, the proposed circuit is considerably appropriate to further developing into an integrated circuit. The results of PSPICE simulation program are corresponding to the theoretical analysis.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Resistor-less" title="Resistor-less">Resistor-less</a>, <a href="https://publications.waset.org/search?q=Current-mode" title=" Current-mode"> Current-mode</a>, <a href="https://publications.waset.org/search?q=Biquad%20filter" title=" Biquad filter"> Biquad filter</a>, <a href="https://publications.waset.org/search?q=CCTA." title=" CCTA."> CCTA.</a> </p> <a href="https://publications.waset.org/8973/resistor-less-current-mode-universal-biquad-filter-using-cctas-and-grounded-capacitors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/8973/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/8973/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/8973/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/8973/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/8973/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/8973/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/8973/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/8973/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/8973/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/8973/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/8973.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2062</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">743</span> CRLH and SRR Based Microwave Filter Design Useful for Communication Applications </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Subal%20Kar">Subal Kar</a>, <a href="https://publications.waset.org/search?q=Amitesh%20Kumar"> Amitesh Kumar</a>, <a href="https://publications.waset.org/search?q=A.%20Majumder"> A. Majumder</a>, <a href="https://publications.waset.org/search?q=S.%20K.%20Ghosh"> S. K. Ghosh</a>, <a href="https://publications.waset.org/search?q=S.%20Saha"> S. Saha</a>, <a href="https://publications.waset.org/search?q=S.%20S.%20Sikdar"> S. S. Sikdar</a>, <a href="https://publications.waset.org/search?q=T.%20K.%20Saha"> T. K. Saha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>CRLH (composite right/left-handed) based and SRR (split-ring resonator) based filters have been designed at microwave frequency which can provide better performance compared to conventional edge-coupled band-pass filter designed around the same frequency, 2.45 GHz. Both CRLH and SRR are unit cells used in metamaterial design. The primary aim of designing filters with such structures is to realize size reduction and also to realize novel filter performance. The CRLH based filter has been designed in microstrip transmission line, while the SRR based filter is designed with SRR loading in waveguide. The CRLH based filter designed at 2.45 GHz provides an insertion loss of 1.6 dB with harmonic suppression up to 10 GHz with 67 % size reduction when compared with a conventional edge-coupled band-pass filter designed around the same frequency. One dimensional (1-D) SRR matrix loaded in a waveguide shows the possibility of realizing a stop-band with sharp skirts in the pass-band while a stop-band in the pass-band of normal rectangular waveguide with tailoring of the dimensions of SRR unit cells. Such filters are expected to be very useful for communication systems at microwave frequency.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=BPF" title="BPF">BPF</a>, <a href="https://publications.waset.org/search?q=CRLH" title=" CRLH"> CRLH</a>, <a href="https://publications.waset.org/search?q=Harmonic" title=" Harmonic"> Harmonic</a>, <a href="https://publications.waset.org/search?q=Metamaterial" title=" Metamaterial"> Metamaterial</a>, <a href="https://publications.waset.org/search?q=SRR" title=" SRR"> SRR</a>, <a href="https://publications.waset.org/search?q=Waveguide." title=" Waveguide."> Waveguide.</a> </p> <a href="https://publications.waset.org/10003933/crlh-and-srr-based-microwave-filter-design-useful-for-communication-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10003933/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10003933/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10003933/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10003933/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10003933/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10003933/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10003933/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10003933/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10003933/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10003933/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10003933.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1770</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">742</span> IIR Filter design with Craziness based Particle Swarm Optimization Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Suman%20Kumar%20Saha">Suman Kumar Saha</a>, <a href="https://publications.waset.org/search?q=Rajib%20Kar"> Rajib Kar</a>, <a href="https://publications.waset.org/search?q=Durbadal%20Mandal"> Durbadal Mandal</a>, <a href="https://publications.waset.org/search?q=S.%20P.%20Ghoshal"> S. P. Ghoshal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This paper demonstrates the application of craziness based particle swarm optimization (CRPSO) technique for designing the 8th order low pass Infinite Impulse Response (IIR) filter. CRPSO, the much improved version of PSO, is a population based global heuristic search algorithm which finds near optimal solution in terms of a set of filter coefficients. Effectiveness of this algorithm is justified with a comparative study of some well established algorithms, namely, real coded genetic algorithm (RGA) and particle swarm optimization (PSO). Simulation results affirm that the proposed algorithm CRPSO, outperforms over its counterparts not only in terms of quality output i.e. sharpness at cut-off, pass band ripple, stop band ripple, and stop band attenuation but also in convergence speed with assured stability.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=IIR%20Filter" title="IIR Filter">IIR Filter</a>, <a href="https://publications.waset.org/search?q=RGA" title=" RGA"> RGA</a>, <a href="https://publications.waset.org/search?q=PSO" title=" PSO"> PSO</a>, <a href="https://publications.waset.org/search?q=CRPSO" title=" CRPSO"> CRPSO</a>, <a href="https://publications.waset.org/search?q=Evolutionary%20Optimization%20Techniques" title=" Evolutionary Optimization Techniques"> Evolutionary Optimization Techniques</a>, <a href="https://publications.waset.org/search?q=Low%20Pass%20%28LP%29%20Filter" title=" Low Pass (LP) Filter"> Low Pass (LP) Filter</a>, <a href="https://publications.waset.org/search?q=Magnitude%0D%0AResponse" title=" Magnitude Response"> Magnitude Response</a>, <a href="https://publications.waset.org/search?q=Pole-Zero%20Plot" title=" Pole-Zero Plot"> Pole-Zero Plot</a>, <a href="https://publications.waset.org/search?q=Stability." title=" Stability."> Stability.</a> </p> <a href="https://publications.waset.org/504/iir-filter-design-with-craziness-based-particle-swarm-optimization-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/504/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/504/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/504/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/504/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/504/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/504/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/504/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/504/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/504/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/504/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/504.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2576</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">741</span> Simulation of Voltage Controlled Tunable All Pass Filter Using LM13700 OTA</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Bhaba%20Priyo%20Das">Bhaba Priyo Das</a>, <a href="https://publications.waset.org/search?q=Neville%20Watson"> Neville Watson</a>, <a href="https://publications.waset.org/search?q=Yonghe%20Liu"> Yonghe Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>In recent years Operational Transconductance Amplifier based high frequency integrated circuits, filters and systems have been widely investigated. The usefulness of OTAs over conventional OP-Amps in the design of both first order and second order active filters are well documented. This paper discusses some of the tunability issues using the Matlab/Simulink® software which are previously unreported for any commercial OTA. Using the simulation results two first order voltage controlled all pass filters with phase tuning capability are proposed.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=All%20pass%20filter" title="All pass filter">All pass filter</a>, <a href="https://publications.waset.org/search?q=Operational%20Transconductance%20Amplifier" title=" Operational Transconductance Amplifier"> Operational Transconductance Amplifier</a>, <a href="https://publications.waset.org/search?q=Simulation." title=" Simulation."> Simulation.</a> </p> <a href="https://publications.waset.org/8924/simulation-of-voltage-controlled-tunable-all-pass-filter-using-lm13700-ota" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/8924/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/8924/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/8924/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/8924/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/8924/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/8924/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/8924/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/8924/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/8924/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/8924/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/8924.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">3622</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">740</span> New Nonlinear Filtering Strategies for Eliminating Short and Long Tailed Noise in Images with Edge Preservation Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=E.%20Srinivasan">E. Srinivasan</a>, <a href="https://publications.waset.org/search?q=D.%20Ebenezer"> D. Ebenezer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Midpoint filter is quite effective in recovering the images confounded by the short-tailed (uniform) noise. It, however, performs poorly in the presence of additive long-tailed (impulse) noise and it does not preserve the edge structures of the image signals. Median smoother discards outliers (impulses) effectively, but it fails to provide adequate smoothing for images corrupted with nonimpulse noise. In this paper, two nonlinear techniques for image filtering, namely, New Filter I and New Filter II are proposed based on a nonlinear high-pass filter algorithm. New Filter I is constructed using a midpoint filter, a highpass filter and a combiner. It suppresses uniform noise quite well. New Filter II is configured using an alpha trimmed midpoint filter, a median smoother of window size 3x3, the high pass filter and the combiner. It is robust against impulse noise and attenuates uniform noise satisfactorily. Both the filters are shown to exhibit good response at the image boundaries (edges). The proposed filters are evaluated for their performance on a test image and the results obtained are included. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Image%20filters" title="Image filters">Image filters</a>, <a href="https://publications.waset.org/search?q=Midpoint%20filter" title=" Midpoint filter"> Midpoint filter</a>, <a href="https://publications.waset.org/search?q=Nonlinear%20filters" title=" Nonlinear filters"> Nonlinear filters</a>, <a href="https://publications.waset.org/search?q=Nonlinear%20highpass%20filter" title=" Nonlinear highpass filter"> Nonlinear highpass filter</a>, <a href="https://publications.waset.org/search?q=Order-statistic%20filters" title=" Order-statistic filters"> Order-statistic filters</a>, <a href="https://publications.waset.org/search?q=Rank-order%20filters." title=" Rank-order filters."> Rank-order filters.</a> </p> <a href="https://publications.waset.org/15445/new-nonlinear-filtering-strategies-for-eliminating-short-and-long-tailed-noise-in-images-with-edge-preservation-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/15445/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/15445/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/15445/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/15445/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/15445/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/15445/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/15445/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/15445/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/15445/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/15445/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/15445.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1450</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">739</span> An Improved QRS Complex Detection for Online Medical Diagnosis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=I.%20L.%20Ahmad">I. L. Ahmad</a>, <a href="https://publications.waset.org/search?q=M.%20Mohamed"> M. Mohamed</a>, <a href="https://publications.waset.org/search?q=N.%20A.%20Ab.%20Ghani"> N. A. Ab. Ghani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the work of signal discrimination specifically for Electrocardiogram (ECG) waveform. ECG signal is comprised of P, QRS, and T waves in each normal heart beat to describe the pattern of heart rhythms corresponds to a specific individual. Further medical diagnosis could be done to determine any heart related disease using ECG information. The emphasis on QRS Complex classification is further discussed to illustrate the importance of it. Pan-Tompkins Algorithm, a widely known technique has been adapted to realize the QRS Complex classification process. There are eight steps involved namely sampling, normalization, low pass filter, high pass filter (build a band pass filter), derivation, squaring, averaging and lastly is the QRS detection. The simulation results obtained is represented in a Graphical User Interface (GUI) developed using MATLAB. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=ECG" title="ECG">ECG</a>, <a href="https://publications.waset.org/search?q=Pan%20Tompkins%20Algorithm" title=" Pan Tompkins Algorithm"> Pan Tompkins Algorithm</a>, <a href="https://publications.waset.org/search?q=QRS%20Complex" title=" QRS Complex"> QRS Complex</a>, <a href="https://publications.waset.org/search?q=Simulation" title=" Simulation"> Simulation</a> </p> <a href="https://publications.waset.org/12150/an-improved-qrs-complex-detection-for-online-medical-diagnosis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/12150/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/12150/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/12150/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/12150/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/12150/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/12150/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/12150/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/12150/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/12150/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/12150/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/12150.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2574</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">738</span> Two-Dimensional Symmetric Half-Plane Recursive Doubly Complementary Digital Lattice Filters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Ju-Hong%20Lee">Ju-Hong Lee</a>, <a href="https://publications.waset.org/search?q=Chong-Jia%20Ciou"> Chong-Jia Ciou</a>, <a href="https://publications.waset.org/search?q=Yuan-Hau%20Yang"> Yuan-Hau Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This paper deals with the problem of two-dimensional (2-D) recursive doubly complementary (DC) digital filter design. We present a structure of 2-D recursive DC filters by using 2-D symmetric half-plane (SHP) recursive digital all-pass lattice filters (DALFs). The novelty of using 2-D SHP recursive DALFs to construct a 2-D recursive DC digital lattice filter is that the resulting 2-D SHP recursive DC digital lattice filter provides better performance than the existing 2-D SHP recursive DC digital filter. Moreover, the proposed structure possesses a favorable 2-D DC half-band (DC-HB) property that allows about half of the 2-D SHP recursive DALF’s coefficients to be zero. This leads to considerable savings in computational burden for implementation. To ensure the stability of a designed 2-D SHP recursive DC digital lattice filter, some necessary constraints on the phase of the 2-D SHP recursive DALF during the design process are presented. Design of a 2-D diamond-shape decimation/interpolation filter is presented for illustration and comparison.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=All-pass%20digital%20filter" title="All-pass digital filter">All-pass digital filter</a>, <a href="https://publications.waset.org/search?q=doubly%20complementary" title=" doubly complementary"> doubly complementary</a>, <a href="https://publications.waset.org/search?q=lattice%20structure" title=" lattice structure"> lattice structure</a>, <a href="https://publications.waset.org/search?q=symmetric%20half-plane%20digital%20filter" title=" symmetric half-plane digital filter"> symmetric half-plane digital filter</a>, <a href="https://publications.waset.org/search?q=sampling%20rate%20conversion." title=" sampling rate conversion."> sampling rate conversion.</a> </p> <a href="https://publications.waset.org/10004594/two-dimensional-symmetric-half-plane-recursive-doubly-complementary-digital-lattice-filters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10004594/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10004594/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10004594/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10004594/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10004594/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10004594/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10004594/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10004594/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10004594/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10004594/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10004594.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1269</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">737</span> A New Microstrip Diplexer Using Coupled Stepped Impedance Resonators</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=A.%20Chinig">A. Chinig</a>, <a href="https://publications.waset.org/search?q=J.%20Zbitou"> J. Zbitou</a>, <a href="https://publications.waset.org/search?q=A.%20Errkik"> A. Errkik</a>, <a href="https://publications.waset.org/search?q=L.%20Elabdellaoui"> L. Elabdellaoui</a>, <a href="https://publications.waset.org/search?q=A.%20Tajmouati"> A. Tajmouati</a>, <a href="https://publications.waset.org/search?q=A.%20Tribak"> A. Tribak</a>, <a href="https://publications.waset.org/search?q=M.%20Latrach"> M. Latrach</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This paper presents a new structure of microstrip band pass filter (BPF) based on coupled stepped impedance resonators. Each filter consists of two coupled stepped impedance resonators connected to microstrip feed lines. The coupled junction is utilized to connect the two BPFs to the antenna. This two band pass filters are designed and simulated to operate for the digital communication system (DCS) and Industrial Scientific and Medical (ISM) bands at 1.8 GHz and 2.45 GHz respectively. The proposed circuit presents good performances with an insertion loss lower than 2.3 dB and isolation between the two channels greater than 21 dB. The prototype of the optimized diplexer have been investigated numerically by using ADS Agilent and verified with CST microwave software.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Band%20Pass%20Filter" title="Band Pass Filter">Band Pass Filter</a>, <a href="https://publications.waset.org/search?q=coupled%20junction" title=" coupled junction"> coupled junction</a>, <a href="https://publications.waset.org/search?q=coupled%20stepped%0D%0Aimpedance%20resonators" title=" coupled stepped impedance resonators"> coupled stepped impedance resonators</a>, <a href="https://publications.waset.org/search?q=diplexer" title=" diplexer"> diplexer</a>, <a href="https://publications.waset.org/search?q=insertion%20loss" title=" insertion loss"> insertion loss</a>, <a href="https://publications.waset.org/search?q=isolation." title=" isolation."> isolation.</a> </p> <a href="https://publications.waset.org/10000297/a-new-microstrip-diplexer-using-coupled-stepped-impedance-resonators" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10000297/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10000297/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10000297/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10000297/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10000297/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10000297/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10000297/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10000297/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10000297/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10000297/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10000297.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">3823</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">736</span> Modeling Thermo-Photo-Voltaic Selective Emitter Based on a Semi-Transparent Emitter with Integrated Narrow Band-Pass Pre-Filter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=F.%20Stake">F. Stake</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is a parametric study combining simple and well known optical theories. These simple theories are arranged to form part of one answer to the question: “Can a semi-transparent Thermo-Photo-Voltaic (TPV) emitter have an optical extinction spectrum so much greater than its optical absorption spectrum that it becomes its own band-pass pre-filter, and if so, how well might it be expected to suppress light of undesired wavelengths?” In the report, hypothetical materials and operating temperatures will be used for comparative analyses only. Thermal emission properties of these hypothetical materials were created using two openly available FORTRAN programs. Results indicate that if using highly transparent materials it may be possible to create a thermal emitter that is its own band-pass pre-filter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Christensen%20effect" title="Christensen effect">Christensen effect</a>, <a href="https://publications.waset.org/search?q=DISORT" title=" DISORT"> DISORT</a>, <a href="https://publications.waset.org/search?q=index%20of%20refraction" title=" index of refraction"> index of refraction</a>, <a href="https://publications.waset.org/search?q=scattering." title=" scattering."> scattering.</a> </p> <a href="https://publications.waset.org/10010694/modeling-thermo-photo-voltaic-selective-emitter-based-on-a-semi-transparent-emitter-with-integrated-narrow-band-pass-pre-filter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10010694/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10010694/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10010694/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10010694/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10010694/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10010694/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10010694/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10010694/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10010694/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10010694/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10010694.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">602</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">735</span> A Low-Voltage Tunable Channel Selection Filter for WiMAX Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Kayvan%20Ahmadi">Kayvan Ahmadi</a>, <a href="https://publications.waset.org/search?q=Hossein%20Shamsi"> Hossein Shamsi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposes a low-voltage and low-power fully integrated digitally tuned continuous-time channel selection filter for WiMAX applications. A 5th-order elliptic low-pass filter is realized in a Gm-C topology. The bandwidth of the fully differential filter is reconfigurable from 2.5MHz to 20MHz (8x) for different requirements in WiMAX applications. The filter is simulated in a standard 90nm CMOS process. Simulation results show the THD (@Vout =100mVpp) is less than -66dB. The in-band ripple of the filter is about 0.15dB. The filter consumes 1.5mW from a supply voltage of 0.9V. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Common-mode%20feedback" title="Common-mode feedback">Common-mode feedback</a>, <a href="https://publications.waset.org/search?q=continuous-time" title=" continuous-time"> continuous-time</a>, <a href="https://publications.waset.org/search?q=fully%0Adifferential%20transconductor" title=" fully differential transconductor"> fully differential transconductor</a>, <a href="https://publications.waset.org/search?q=Gm-C%20topology" title=" Gm-C topology"> Gm-C topology</a>, <a href="https://publications.waset.org/search?q=low-voltage" title=" low-voltage"> low-voltage</a> </p> <a href="https://publications.waset.org/14428/a-low-voltage-tunable-channel-selection-filter-for-wimax-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/14428/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/14428/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/14428/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/14428/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/14428/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/14428/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/14428/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/14428/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/14428/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/14428/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/14428.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1608</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">734</span> Synthesis of Wavelet Filters using Wavelet Neural Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Wajdi%20Bellil">Wajdi Bellil</a>, <a href="https://publications.waset.org/search?q=Chokri%20Ben%20Amar"> Chokri Ben Amar</a>, <a href="https://publications.waset.org/search?q=Adel%20M.%20Alimi"> Adel M. Alimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An application of Beta wavelet networks to synthesize pass-high and pass-low wavelet filters is investigated in this work. A Beta wavelet network is constructed using a parametric function called Beta function in order to resolve some nonlinear approximation problem. We combine the filter design theory with wavelet network approximation to synthesize perfect filter reconstruction. The order filter is given by the number of neurons in the hidden layer of the neural network. In this paper we use only the first derivative of Beta function to illustrate the proposed design procedures and exhibit its performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Beta%20wavelets" title="Beta wavelets">Beta wavelets</a>, <a href="https://publications.waset.org/search?q=Wavenet" title=" Wavenet"> Wavenet</a>, <a href="https://publications.waset.org/search?q=multiresolution%20analysis" title=" multiresolution analysis"> multiresolution analysis</a>, <a href="https://publications.waset.org/search?q=perfect%20filter%20reconstruction" title="perfect filter reconstruction">perfect filter reconstruction</a>, <a href="https://publications.waset.org/search?q=salient%20point%20detect" title=" salient point detect"> salient point detect</a>, <a href="https://publications.waset.org/search?q=repeatability." title=" repeatability."> repeatability.</a> </p> <a href="https://publications.waset.org/9532/synthesis-of-wavelet-filters-using-wavelet-neural-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9532/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9532/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9532/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9532/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9532/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9532/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9532/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9532/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9532/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9532/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9532.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1665</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">733</span> A Resistorless High Input Impedance First Order All-Pass Filter Using CCCIIs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Kapil%20Dev%20Sharma">Kapil Dev Sharma</a>, <a href="https://publications.waset.org/search?q=Kirat%20Pal"> Kirat Pal</a>, <a href="https://publications.waset.org/search?q=Costas%20Psychalinos"> Costas Psychalinos </a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>A new first order all-pass filter topology realized using current controlled current conveyors (CCCIIs) is introduced in this paper. Offered benefits are the high-impedance of the input node, the absence of external resistors because of the usage of CCCIIs with positive and negative intrinsic resistances, the presence of only grounded capacitors, and the capability of electronic adjustment of the phase shift through a single bias current. The correct operation of the introduced topology is conformed through simulation results, while its behavior is evaluated through comparison results.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Active%20filters" title="Active filters">Active filters</a>, <a href="https://publications.waset.org/search?q=All-pass%20filters" title=" All-pass filters"> All-pass filters</a>, <a href="https://publications.waset.org/search?q=Analog%20signal%20processing" title=" Analog signal processing"> Analog signal processing</a>, <a href="https://publications.waset.org/search?q=Current%20conveyors." title=" Current conveyors."> Current conveyors.</a> </p> <a href="https://publications.waset.org/9996920/a-resistorless-high-input-impedance-first-order-all-pass-filter-using-ccciis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9996920/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9996920/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9996920/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9996920/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9996920/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9996920/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9996920/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9996920/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9996920/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9996920/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9996920.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1710</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">732</span> A High-Frequency Low-Power Low-Pass-Filter-Based All-Current-Mirror Sinusoidal Quadrature Oscillator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=A.%20Leelasantitham">A. Leelasantitham</a>, <a href="https://publications.waset.org/search?q=B.%20Srisuchinwong"> B. Srisuchinwong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A high-frequency low-power sinusoidal quadrature oscillator is presented through the use of two 2nd-order low-pass current-mirror (CM)-based filters, a 1st-order CM low-pass filter and a CM bilinear transfer function. The technique is relatively simple based on (i) inherent time constants of current mirrors, i.e. the internal capacitances and the transconductance of a diode-connected NMOS, (ii) a simple negative resistance RN formed by a resistor load RL of a current mirror. Neither external capacitances nor inductances are required. As a particular example, a 1.9-GHz, 0.45-mW, 2-V CMOS low-pass-filter-based all-current-mirror sinusoidal quadrature oscillator is demonstrated. The oscillation frequency (f0) is 1.9 GHz and is current-tunable over a range of 370 MHz or 21.6 %. The power consumption is at approximately 0.45 mW. The amplitude matching and the quadrature phase matching are better than 0.05 dB and 0.15掳, respectively. Total harmonic distortions (THD) are less than 0.3 %. At 2 MHz offset from the 1.9 GHz, the carrier to noise ratio (CNR) is 90.01 dBc/Hz whilst the figure of merit called a normalized carrier-to-noise ratio (CNRnorm) is 153.03 dBc/Hz. The ratio of the oscillation frequency (f0) to the unity-gain frequency (fT) of a transistor is 0.25. Comparisons to other approaches are also included. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Sinusoidal%20quadrature%20oscillator" title="Sinusoidal quadrature oscillator">Sinusoidal quadrature oscillator</a>, <a href="https://publications.waset.org/search?q=low-pass-filterbased" title=" low-pass-filterbased"> low-pass-filterbased</a>, <a href="https://publications.waset.org/search?q=current-mirror%20bilinear%20transfer%20function" title="current-mirror bilinear transfer function">current-mirror bilinear transfer function</a>, <a href="https://publications.waset.org/search?q=all-current-mirror" title=" all-current-mirror"> all-current-mirror</a>, <a href="https://publications.waset.org/search?q=negative%20resistance" title="negative resistance">negative resistance</a>, <a href="https://publications.waset.org/search?q=low%20power" title=" low power"> low power</a>, <a href="https://publications.waset.org/search?q=high%20frequency" title=" high frequency"> high frequency</a>, <a href="https://publications.waset.org/search?q=low%20distortion." title=" low distortion."> low distortion.</a> </p> <a href="https://publications.waset.org/163/a-high-frequency-low-power-low-pass-filter-based-all-current-mirror-sinusoidal-quadrature-oscillator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/163/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/163/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/163/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/163/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/163/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/163/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/163/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/163/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/163/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/163/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/163.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2070</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">731</span> Step Height Calibration Using Hamming Window Band-Pass Filter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Dahi%20Ghareab%20Abdelsalam%20Ibrahim">Dahi Ghareab Abdelsalam Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>Axial and lateral measurements of a step depth standard are presented. The axial measurement is performed based on the ISO 5436 profile analysis. The lateral measurement is performed based on the Hamming window band-pass filter method. The method is applied to calibrate a groove structure of a step depth standard of 60 nm. For the axial measurement, the computed results show that the depth of the groove structure is 59.7 卤 0.6 nm. For the lateral measurement, the computed results show that the difference between the two line edges of the groove structure is 151.7 卤 2.5 nm. The method can be applied to any step height/depth regardless of the sharpness of the line edges.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Hamming%20window" title="Hamming window">Hamming window</a>, <a href="https://publications.waset.org/search?q=band-pass%20filter" title=" band-pass filter"> band-pass filter</a>, <a href="https://publications.waset.org/search?q=metrology" title=" metrology"> metrology</a>, <a href="https://publications.waset.org/search?q=interferometry." title=" interferometry."> interferometry.</a> </p> <a href="https://publications.waset.org/10013599/step-height-calibration-using-hamming-window-band-pass-filter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10013599/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10013599/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10013599/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10013599/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10013599/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10013599/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10013599/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10013599/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10013599/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10013599/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10013599.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">106</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">730</span> Design of Two-Channel Quincunx Quadrature Mirror Filter Banks Using Digital All-Pass Lattice Filters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Ju-Hong%20Lee">Ju-Hong Lee</a>, <a href="https://publications.waset.org/search?q=Chong-Jia%20Ciou"> Chong-Jia Ciou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This paper deals with the problem of two-dimensional (2-D) recursive two-channel quincunx quadrature mirror filter (QQMF) banks design. The analysis and synthesis filters of the 2-D recursive QQMF bank are composed of 2-D recursive digital allpass lattice filters (DALFs) with symmetric half-plane (SHP) support regions. Using the 2-D doubly complementary half-band (DC-HB) property possessed by the analysis and synthesis filters, we facilitate the design of the proposed QQMF bank. For finding the coefficients of the 2-D recursive SHP DALFs, we present a structure of 2-D recursive digital allpass filters by using 2-D SHP recursive digital all-pass lattice filters (DALFs). The novelty of using 2-D SHP recursive DALFs to construct a 2-D recursive QQMF bank is that the resulting 2-D recursive QQMF bank provides better performance than the existing 2-D recursive QQMF banks. Simulation results are also presented for illustration and comparison.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=All-pass%20digital%20filter" title="All-pass digital filter">All-pass digital filter</a>, <a href="https://publications.waset.org/search?q=doubly%20complementary" title=" doubly complementary"> doubly complementary</a>, <a href="https://publications.waset.org/search?q=lattice%20structure" title=" lattice structure"> lattice structure</a>, <a href="https://publications.waset.org/search?q=symmetric%20half-plane%20digital%20filter" title=" symmetric half-plane digital filter"> symmetric half-plane digital filter</a>, <a href="https://publications.waset.org/search?q=quincunx%20QMF%20bank." title=" quincunx QMF bank."> quincunx QMF bank.</a> </p> <a href="https://publications.waset.org/10006958/design-of-two-channel-quincunx-quadrature-mirror-filter-banks-using-digital-all-pass-lattice-filters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10006958/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10006958/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10006958/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10006958/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10006958/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10006958/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10006958/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10006958/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10006958/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10006958/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10006958.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">886</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">729</span> Evaluation of Algorithms for Sequential Decision in Biosonar Target Classification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Turgay%20Temel">Turgay Temel</a>, <a href="https://publications.waset.org/search?q=John%20Hallam"> John Hallam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>A sequential decision problem, based on the task ofidentifying the species of trees given acoustic echo data collectedfrom them, is considered with well-known stochastic classifiers,including single and mixture Gaussian models. Echoes are processedwith a preprocessing stage based on a model of mammalian cochlearfiltering, using a new discrete low-pass filter characteristic. Stoppingtime performance of the sequential decision process is evaluated andcompared. It is observed that the new low pass filter processingresults in faster sequential decisions.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Classification" title="Classification">Classification</a>, <a href="https://publications.waset.org/search?q=neuro-spike%20coding" title=" neuro-spike coding"> neuro-spike coding</a>, <a href="https://publications.waset.org/search?q=parametricmodel" title=" parametricmodel"> parametricmodel</a>, <a href="https://publications.waset.org/search?q=Gaussian%20mixture%20with%20EM%20algorithm" title=" Gaussian mixture with EM algorithm"> Gaussian mixture with EM algorithm</a>, <a href="https://publications.waset.org/search?q=sequential%20decision." title=" sequential decision."> sequential decision.</a> </p> <a href="https://publications.waset.org/8331/evaluation-of-algorithms-for-sequential-decision-in-biosonar-target-classification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/8331/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/8331/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/8331/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/8331/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/8331/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/8331/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/8331/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/8331/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/8331/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/8331/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/8331.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1547</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">728</span> Comparative Study of Three DGS Unit Shapes and Compact Microstrip Low-Pass and Band-Pass Filters Designs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=M.%20Challal">M. Challal</a>, <a href="https://publications.waset.org/search?q=F.%20Labu"> F. Labu</a>, <a href="https://publications.waset.org/search?q=M.%20Dehmas"> M. Dehmas</a>, <a href="https://publications.waset.org/search?q=A.%20Azrar"> A. Azrar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, three types of defected ground structure (DGS) units which are triangular-head (TH), rectangular-head (RH) and U-shape (US) are investigated. They are further used to low-pass and band-pass filters designs (LPF and BPF) and the obtained performances are examined. The LPF employing RH-DGS geometry presents the advantages of compact size, low-insertion loss and wide stopband compared to the other filters. It provides cutoff frequency of 2.5 GHz, largest rejection band width of 20 dB from 2.98 to 8.76 GHz, smallest transition region and smallest sharpness of the cutoff frequency. The BPF based on RH-DGS has the highest bandwidth (BW) of about 0.74 GHz and the lowest center frequency of 3.24 GHz, whereas the other BPFs have BWs less than 0.7 GHz. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Defected%20ground%20structure%20%28DGS%29" title="Defected ground structure (DGS)">Defected ground structure (DGS)</a>, <a href="https://publications.waset.org/search?q=triangular-head%28TH%29%20DGS" title=" triangular-head(TH) DGS"> triangular-head(TH) DGS</a>, <a href="https://publications.waset.org/search?q=rectangular-head%20%28RH%29%20DGS" title=" rectangular-head (RH) DGS"> rectangular-head (RH) DGS</a>, <a href="https://publications.waset.org/search?q=U-shape%20%28US%29%20DGS" title=" U-shape (US) DGS"> U-shape (US) DGS</a>, <a href="https://publications.waset.org/search?q=lowpassfilter%20%28LPF%29%20and%20band-pass%20filter%20%28BPF%29." title=" lowpassfilter (LPF) and band-pass filter (BPF)."> lowpassfilter (LPF) and band-pass filter (BPF).</a> </p> <a href="https://publications.waset.org/14959/comparative-study-of-three-dgs-unit-shapes-and-compact-microstrip-low-pass-and-band-pass-filters-designs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/14959/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/14959/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/14959/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/14959/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/14959/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/14959/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/14959/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/14959/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/14959/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/14959/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/14959.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1673</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">727</span> Measurement Fractional Order Sallen-Key Filters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Ahmed%20Soltan">Ahmed Soltan</a>, <a href="https://publications.waset.org/search?q=Ahmed%20G.%20Radwan"> Ahmed G. Radwan</a>, <a href="https://publications.waset.org/search?q=Ahmed%20M.%20Soliman"> Ahmed M. Soliman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This work aims to generalize the integer order Sallen-Key filters into the fractional-order domain. The analysis in the case of two different fractional-order elements introduced where the general transfer function becomes four terms which is unusual in the conventional case. In addition, the effect of the transfer function parameters on the filter poles and hence the stability is introduced and closed forms for the filter critical frequencies are driven. Finally, different examples for the fractional order Sallen-Key filter design are presented with circuit simulations using ADS where a great matching between the numerical and simulation results is obtained.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Analog%20Filter" title="Analog Filter">Analog Filter</a>, <a href="https://publications.waset.org/search?q=Low-Pass%20Filter" title=" Low-Pass Filter"> Low-Pass Filter</a>, <a href="https://publications.waset.org/search?q=Fractance" title=" Fractance"> Fractance</a>, <a href="https://publications.waset.org/search?q=Sallen-Key" title=" Sallen-Key"> Sallen-Key</a>, <a href="https://publications.waset.org/search?q=Stability." title=" Stability."> Stability.</a> </p> <a href="https://publications.waset.org/9996585/measurement-fractional-order-sallen-key-filters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9996585/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9996585/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9996585/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9996585/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9996585/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9996585/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9996585/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9996585/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9996585/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9996585/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9996585.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">3143</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">726</span> A Design of Electronically Tunable Voltagemode Universal Filter with High Input Impedance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Surapong%20Siripongdee">Surapong Siripongdee</a>, <a href="https://publications.waset.org/search?q=Witthaya%20Mekhum"> Witthaya Mekhum</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article presents a voltage-mode universal biquadratic filter performing simultaneous 3 standard functions: lowpass, high-pass and band-pass functions, employing differential different current conveyor (DDCC) and current controlled current conveyor (CCCII) as active element. The features of the circuit are that: the quality factor and pole frequency can be tuned independently via the input bias currents: the circuit description is very simple, consisting of 1 DDCC, 2 CCCIIs, 2 electronic resistors and 2 grounded capacitors. Without requiring component matching conditions, the proposed circuit is very appropriate to further develop into an integrated circuit. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Filter" title="Filter">Filter</a>, <a href="https://publications.waset.org/search?q=DDCC" title=" DDCC"> DDCC</a>, <a href="https://publications.waset.org/search?q=CCCII" title=" CCCII"> CCCII</a>, <a href="https://publications.waset.org/search?q=Analog%20circuit" title=" Analog circuit"> Analog circuit</a>, <a href="https://publications.waset.org/search?q=Voltagemode" title=" Voltagemode"> Voltagemode</a>, <a href="https://publications.waset.org/search?q=PSPICE" title=" PSPICE"> PSPICE</a> </p> <a href="https://publications.waset.org/273/a-design-of-electronically-tunable-voltagemode-universal-filter-with-high-input-impedance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/273/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/273/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/273/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/273/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/273/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/273/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/273/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/273/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/273/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/273/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/273.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1562</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">725</span> Optimal Design of Two-Channel Recursive Parallelogram Quadrature Mirror Filter Banks </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Ju-Hong%20Lee">Ju-Hong Lee</a>, <a href="https://publications.waset.org/search?q=Yi-Lin%20Shieh"> Yi-Lin Shieh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>This paper deals with the optimal design of two-channel recursive parallelogram quadrature mirror filter (PQMF) banks. The analysis and synthesis filters of the PQMF bank are composed of two-dimensional (2-D) recursive digital all-pass filters (DAFs) with nonsymmetric half-plane (NSHP) support region. The design problem can be facilitated by using the 2-D doubly complementary half-band (DC-HB) property possessed by the analysis and synthesis filters. For finding the coefficients of the 2-D recursive NSHP DAFs, we appropriately formulate the design problem to result in an optimization problem that can be solved by using a weighted least-squares (WLS) algorithm in the minimax (<em>L<sub>∞</sub></em>) optimal sense. The designed 2-D recursive PQMF bank achieves perfect magnitude response and possesses satisfactory phase response without requiring extra phase equalizer. Simulation results are also provided for illustration and comparison.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Parallelogram%20Quadrature%20Mirror%20Filter%20Bank" title="Parallelogram Quadrature Mirror Filter Bank">Parallelogram Quadrature Mirror Filter Bank</a>, <a href="https://publications.waset.org/search?q=Doubly%20Complementary%20Filter" title=" Doubly Complementary Filter"> Doubly Complementary Filter</a>, <a href="https://publications.waset.org/search?q=Nonsymmetric%20Half-Plane%20Filter" title=" Nonsymmetric Half-Plane Filter"> Nonsymmetric Half-Plane Filter</a>, <a href="https://publications.waset.org/search?q=Weighted%20Least%20Squares%20Algorithm" title=" Weighted Least Squares Algorithm"> Weighted Least Squares Algorithm</a>, <a href="https://publications.waset.org/search?q=Digital%20All-Pass%20Filter." title=" Digital All-Pass Filter."> Digital All-Pass Filter.</a> </p> <a href="https://publications.waset.org/9998911/optimal-design-of-two-channel-recursive-parallelogram-quadrature-mirror-filter-banks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/9998911/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/9998911/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/9998911/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/9998911/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/9998911/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/9998911/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/9998911/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/9998911/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/9998911/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/9998911/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/9998911.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">1543</span> </span> </div> </div> <div class="card publication-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">724</span> Effect Comparison of Speckle Noise Reduction Filters on 2D-Echocardigraphic Images</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Faten%20A.%20Dawood">Faten A. Dawood</a>, <a href="https://publications.waset.org/search?q=Rahmita%20W.%20Rahmat"> Rahmita W. Rahmat</a>, <a href="https://publications.waset.org/search?q=Suhaini%20B.%20Kadiman"> Suhaini B. Kadiman</a>, <a href="https://publications.waset.org/search?q=Lili%20N.%20Abdullah"> Lili N. Abdullah</a>, <a href="https://publications.waset.org/search?q=Mohd%20D.%20Zamrin"> Mohd D. Zamrin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>Echocardiography imaging is one of the most common diagnostic tests that are widely used for assessing the abnormalities of the regional heart ventricle function. The main goal of the image enhancement task in 2D-echocardiography (2DE) is to solve two major anatomical structure problems; speckle noise and low quality. Therefore, speckle noise reduction is one of the important steps that used as a pre-processing to reduce the distortion effects in 2DE image segmentation. In this paper, we present the common filters that based on some form of low-pass spatial smoothing filters such as Mean, Gaussian, and Median. The Laplacian filter was used as a high-pass sharpening filter. A comparative analysis was presented to test the effectiveness of these filters after being applied to original 2DE images of 4-chamber and 2-chamber views. Three statistical quantity measures: root mean square error (RMSE), peak signal-to-ratio (PSNR) and signal-tonoise ratio (SNR) are used to evaluate the filter performance quantitatively on the output enhanced image.</p> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Gaussian%20operator" title="Gaussian operator">Gaussian operator</a>, <a href="https://publications.waset.org/search?q=median%20filter" title=" median filter"> median filter</a>, <a href="https://publications.waset.org/search?q=speckle%20texture" title=" speckle texture"> speckle texture</a>, <a href="https://publications.waset.org/search?q=peak%20signal-to-ratio" title=" peak signal-to-ratio"> peak signal-to-ratio</a> </p> <a href="https://publications.waset.org/4045/effect-comparison-of-speckle-noise-reduction-filters-on-2d-echocardigraphic-images" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/4045/apa" target="_blank" rel="nofollow" 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