A wideband reconfigurable filtering phase shifter based on Stub-loaded multimode resonators

Qi Wang; Feng Wei; Xue-Zhi Ding; Qi-Wei Li; Jia-Qi Wang; Zeng-Hui Shi; Kai-Xuan Wang

doi:10.1515/freq-2024-0167

Article

A wideband reconfigurable filtering phase shifter based on Stub-loaded multimode resonators

Qi Wang , Feng Wei , Xue-Zhi Ding , Qi-Wei Li , Jia-Qi Wang , Zeng-Hui Shi and Kai-Xuan Wang

Published/Copyright: November 6, 2024

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From the journal Frequenz Volume 79 Issue 3-4

Abstract

In this paper, a type of reconfigurable filtering phase shifters (RFPSs) composed of stepped-impendence stub-loaded multimode resonators (SLMMR) is proposed. High frequency selectivity and wideband characteristics are realized in the presented work. Four transmission poles (TPs) are generated in the passband to exhibit a flat and wide passband. Meanwhile, the proposed SLMMR produces two controllable transmission zeros (TZs), which improves the frequency selectivity effectively. Meanwhile, radiofrequency switches are utilized to facilitate the transition between different phase shifts. Finally, the proposed RFPSs are designed and fabricated to verify the method. The measured results indicate that the designed RFPSs, which can be turned from 45° to 90° and from 135° to 180°, are capable of realizing more than 40 % FBW with a center frequency of 3.5 GHz.

Keywords: multimode resonator (MMR); reconfigurable filtering phase shifters (RFPSs); translation zero (TZ); wideband

Corresponding author: Qi Wang, Xi’an Key Laboratory of Millimeter Wave and Terahertz Technologies, School of Electrical Engineering, Xidian University, Xi’an, 710071, China, E-mail: qiwangsk@stu.xidian.edu.cn

Research ethics: Not applicable.
Informed consent: Not applicable.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Use of Large Language Models, AI and Machine Learning Tools: None declared.
Conflict of interests: The authors state no conflict of interest.
Research funding: None declared.
Data availability: Not applicable.

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Received: 2024-05-22

Accepted: 2024-09-16

Published Online: 2024-11-06

Published in Print: 2025-04-28

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Articles in the same Issue

https://doi.org/10.1515/freq-2024-0167

Keywords for this article

multimode resonator (MMR); reconfigurable filtering phase shifters (RFPSs); translation zero (TZ); wideband