Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach

Abstract In this paper, benefiting from frequency transformation between the normalized frequency domain of low-pass prototype frequencies and the real frequency domain of the filter, a purely analytical procedure for dual-band filter design is used. The coupling matrix of the filter is analytically...

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Main Authors: Moutaz Albik, Fariz Abboud, Alaaeddin Sarhan, Assal Alkhoder
Format: Article
Language:English
Published: Sociedade Brasileira de Microondas e Optoeletrônica; Sociedade Brasileira de Eletromagnetismo 2022-09-01
Series:Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742022000300351&tlng=en
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author Moutaz Albik
Fariz Abboud
Alaaeddin Sarhan
Assal Alkhoder
author_facet Moutaz Albik
Fariz Abboud
Alaaeddin Sarhan
Assal Alkhoder
author_sort Moutaz Albik
collection DOAJ
description Abstract In this paper, benefiting from frequency transformation between the normalized frequency domain of low-pass prototype frequencies and the real frequency domain of the filter, a purely analytical procedure for dual-band filter design is used. The coupling matrix of the filter is analytically extracted, without the need to perform numerical optimization. The procedure also includes finding the equivalent circuit for these types of filters. The frequency transformation formula is verified through an example. The equivalent circuit and the coupling matrix are also analytically deduced through the same example. Using an electromagnetic structure simulator, an interdigital dual-band filter is designed and simulated. The simulation results fulfill the specifications of the given filter example, and the simulation results verify the possibility of achieving the required specifications of the filter frequency response. The designed and simulated filter has been implemented and measured using a Scalar Network Analyzer. The measurement results confirm the simulation results and the efficiency of the synthesis procedure.
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publishDate 2022-09-01
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spelling doaj.art-200468e36c8a41fcb4b4d574204fae9b2022-12-22T02:24:26ZengSociedade Brasileira de Microondas e Optoeletrônica; Sociedade Brasileira de EletromagnetismoJournal of Microwaves, Optoelectronics and Electromagnetic Applications2179-10742022-09-0121335136710.1590/2179-10742022v21i3261857Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical ApproachMoutaz Albikhttps://orcid.org/0000-0002-4269-7075Fariz Abboudhttps://orcid.org/0000-0003-0201-8274Alaaeddin Sarhanhttps://orcid.org/0000-0002-2430-7491Assal Alkhoderhttps://orcid.org/0000-0001-6326-698XAbstract In this paper, benefiting from frequency transformation between the normalized frequency domain of low-pass prototype frequencies and the real frequency domain of the filter, a purely analytical procedure for dual-band filter design is used. The coupling matrix of the filter is analytically extracted, without the need to perform numerical optimization. The procedure also includes finding the equivalent circuit for these types of filters. The frequency transformation formula is verified through an example. The equivalent circuit and the coupling matrix are also analytically deduced through the same example. Using an electromagnetic structure simulator, an interdigital dual-band filter is designed and simulated. The simulation results fulfill the specifications of the given filter example, and the simulation results verify the possibility of achieving the required specifications of the filter frequency response. The designed and simulated filter has been implemented and measured using a Scalar Network Analyzer. The measurement results confirm the simulation results and the efficiency of the synthesis procedure.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742022000300351&tlng=endual-band filterdual-resonance frequencyfrequency transformationinterdigital filter
spellingShingle Moutaz Albik
Fariz Abboud
Alaaeddin Sarhan
Assal Alkhoder
Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
Journal of Microwaves, Optoelectronics and Electromagnetic Applications
dual-band filter
dual-resonance frequency
frequency transformation
interdigital filter
title Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
title_full Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
title_fullStr Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
title_full_unstemmed Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
title_short Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
title_sort design and implementation of microwave dual band pass interdigital filter using an analytical approach
topic dual-band filter
dual-resonance frequency
frequency transformation
interdigital filter
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742022000300351&tlng=en
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AT assalalkhoder designandimplementationofmicrowavedualbandpassinterdigitalfilterusingananalyticalapproach