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Compact UWB BPF with a notched band using a single perturbed HMSIW cavity

Published online by Cambridge University Press:  31 March 2020

Lili Qu Open the ORCID record for Lili Qu [Opens in a new window] ,
Yonghong Zhang ,
Qun Li Open the ORCID record for Qun Li [Opens in a new window]  and
Yong Fan
Lili Qu
Affiliation:
Department of Microwave Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
Yonghong Zhang*
Affiliation:
Department of Microwave Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
Qun Li
Affiliation:
Department of Microwave Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
Yong Fan
Affiliation:
Department of Microwave Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
*
Author for correspondence: Yonghong Zhang, E-mail: zhangyhh@uestc.edu.cn
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Abstract

This paper presents a notched band ultra-wideband bandpass filter using a single perturbed quint-mode half-mode substrate-integrated waveguide cavity. The cavity is perturbed by loading four stubs at two corners of the magnetic walls of the single cavity. The variable parameters of stubs are selected to move down the first five resonant modes to the predetermined passband during the design process. Meanwhile, microstrip lines with a transition structure located on two loaded stubs are employed to feed the resonator. Moreover, the filter also firstly designs a notched band by introducing a complementary split-ring resonator inside the cavity to mitigate potential interference signals at 8 GHz (satellite communication). Finally, a prototype filter was implemented and measured to verify.

Keywords

Bandpass filterhalf-mode substrate-integrated waveguide (HMSIW)notched bandultra-wideband (UWB)
Type
Filters
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Special Issue 8: Special Issue EuMW 2019. Part II , October 2020 , pp. 809 - 814
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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