GAP-COUPLED DUAL-BAND EVANESCENT-MODE SUBSTRATE INTEGRATED BAND-PASS FILTER WAVEGUIDE

A single-layer substrate integrated waveguide (SIW) is developed to design a dual-band band-pass filter (BPF) operating below the cut-off frequency of the SIW, known as evanescent-mode excitation. Gap-coupled excitation is used to demonstrate the multiple transmission poles (TPs) and transmission ze...

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Veröffentlicht in:	Progress in electromagnetics research. Letters 2020-01, Vol.89, p.53-59
Hauptverfasser:	Nosrati, Amir, Mohammad-Taheri, Mahmud, Nosrati, Mehdi
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Sprache:	eng
Schlagworte:	Design and construction Electric filters Engineering research Waveguides
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container_title	Progress in electromagnetics research. Letters
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creator	Nosrati, Amir Mohammad-Taheri, Mahmud Nosrati, Mehdi
description	A single-layer substrate integrated waveguide (SIW) is developed to design a dual-band band-pass filter (BPF) operating below the cut-off frequency of the SIW, known as evanescent-mode excitation. Gap-coupled excitation is used to demonstrate the multiple transmission poles (TPs) and transmission zeros (TZs) below the cut-off frequency of the SIW. The structure is reported to realize two independent evanescent-mode poles on a single-layer SIW which reduces the size and complexity of the structure compared to those of the recent multi-layer evanescent-mode structures. Lumped-element equivalent circuit is employed to describe the EM behavior of the structure for TZs and TPs realization. A compact single-layer dual-band SIW filter is fabricated based on the proposed structure. A good agreement is reported between the measured and simulated performances.
doi_str_mv	10.2528/PIERL19101302
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Letters</title><description>A single-layer substrate integrated waveguide (SIW) is developed to design a dual-band band-pass filter (BPF) operating below the cut-off frequency of the SIW, known as evanescent-mode excitation. Gap-coupled excitation is used to demonstrate the multiple transmission poles (TPs) and transmission zeros (TZs) below the cut-off frequency of the SIW. The structure is reported to realize two independent evanescent-mode poles on a single-layer SIW which reduces the size and complexity of the structure compared to those of the recent multi-layer evanescent-mode structures. Lumped-element equivalent circuit is employed to describe the EM behavior of the structure for TZs and TPs realization. A compact single-layer dual-band SIW filter is fabricated based on the proposed structure. 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subjects	Design and construction Electric filters Engineering research Waveguides
title	GAP-COUPLED DUAL-BAND EVANESCENT-MODE SUBSTRATE INTEGRATED BAND-PASS FILTER WAVEGUIDE
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