Dual‐band bandpass filter using two simple coupled microstrip rings

Abstract A new dual‐band bandpass filter (BPF) using two very simple coupled microstrip rings is proposed in this paper. The two identical 3λg/2 microstrip rings are coupled each other with λg/2 coupled length, resulting in the generation of dual frequency bands with multiple transmission zeros (TZs...

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Main Authors: Jiashuai Xu, Kai‐Da Xu, Miao Zhang, Qiang Chen
Format: Article
Language:English
Published: Wiley 2021-02-01
Series:Engineering Reports
Subjects:
Online Access:https://doi.org/10.1002/eng2.12288
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author Jiashuai Xu
Kai‐Da Xu
Miao Zhang
Qiang Chen
author_facet Jiashuai Xu
Kai‐Da Xu
Miao Zhang
Qiang Chen
author_sort Jiashuai Xu
collection DOAJ
description Abstract A new dual‐band bandpass filter (BPF) using two very simple coupled microstrip rings is proposed in this paper. The two identical 3λg/2 microstrip rings are coupled each other with λg/2 coupled length, resulting in the generation of dual frequency bands with multiple transmission zeros (TZs). Theoretical deduction is presented to verify the proposed structure. The center frequencies and bandwidths of the two passbands can be tuned by controlling the impedance parameters of the microstrip rings. For demonstration, a prototype example of this dual‐band BPF is fabricated and characterized. The measured results show that it has high selectivity and great return losses of passbands with multiple TZs at the stopband.
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spelling doaj.art-bc8f0f799e2b48b8a47fc92f577a6e562022-12-21T16:53:56ZengWileyEngineering Reports2577-81962021-02-0132n/an/a10.1002/eng2.12288Dual‐band bandpass filter using two simple coupled microstrip ringsJiashuai Xu0Kai‐Da Xu1Miao Zhang2Qiang Chen3Department of Electronic Science Xiamen University Xiamen ChinaSchool of Information and Communications Engineering Xi'an Jiaotong University Xi'an ChinaDepartment of Electronic Science Xiamen University Xiamen ChinaDepartment of Communications Engineering Tohoku University Sendai JapanAbstract A new dual‐band bandpass filter (BPF) using two very simple coupled microstrip rings is proposed in this paper. The two identical 3λg/2 microstrip rings are coupled each other with λg/2 coupled length, resulting in the generation of dual frequency bands with multiple transmission zeros (TZs). Theoretical deduction is presented to verify the proposed structure. The center frequencies and bandwidths of the two passbands can be tuned by controlling the impedance parameters of the microstrip rings. For demonstration, a prototype example of this dual‐band BPF is fabricated and characterized. The measured results show that it has high selectivity and great return losses of passbands with multiple TZs at the stopband.https://doi.org/10.1002/eng2.12288bandpass filterscoupled linesdual‐bandring resonators
spellingShingle Jiashuai Xu
Kai‐Da Xu
Miao Zhang
Qiang Chen
Dual‐band bandpass filter using two simple coupled microstrip rings
Engineering Reports
bandpass filters
coupled lines
dual‐band
ring resonators
title Dual‐band bandpass filter using two simple coupled microstrip rings
title_full Dual‐band bandpass filter using two simple coupled microstrip rings
title_fullStr Dual‐band bandpass filter using two simple coupled microstrip rings
title_full_unstemmed Dual‐band bandpass filter using two simple coupled microstrip rings
title_short Dual‐band bandpass filter using two simple coupled microstrip rings
title_sort dual band bandpass filter using two simple coupled microstrip rings
topic bandpass filters
coupled lines
dual‐band
ring resonators
url https://doi.org/10.1002/eng2.12288
work_keys_str_mv AT jiashuaixu dualbandbandpassfilterusingtwosimplecoupledmicrostriprings
AT kaidaxu dualbandbandpassfilterusingtwosimplecoupledmicrostriprings
AT miaozhang dualbandbandpassfilterusingtwosimplecoupledmicrostriprings
AT qiangchen dualbandbandpassfilterusingtwosimplecoupledmicrostriprings