Tri-/Quad-/Quint-Band Bandpass Filters Based on Transversal Embedded Asymmetrical Square-Ring Resonator

Xiaohan Wan; Zhengzhen Jin; Yifan Wang; Guoxin Xu; Lei Zhang; Yang Xiong; Litian Wang

doi:10.1109/ACCESS.2024.3422846

IEEE Access (Jan 2024)

Tri-/Quad-/Quint-Band Bandpass Filters Based on Transversal Embedded Asymmetrical Square-Ring Resonator

Xiaohan Wan,
Zhengzhen Jin,
Yifan Wang,
Guoxin Xu,
Lei Zhang,
Yang Xiong,
Litian Wang

Affiliations

Xiaohan Wan: Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Zhengzhen Jin: Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Yifan Wang: Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Guoxin Xu: ORCiD; Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Lei Zhang: Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Yang Xiong: ORCiD; Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China
Litian Wang: ORCiD; Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, China

DOI: https://doi.org/10.1109/ACCESS.2024.3422846
Journal volume & issue: Vol. 12
pp. 92241 – 92252

Abstract

Read online

This paper presents a series design method for tri-/quad-/and quint band bandpass filter (BPF) with multiple transmission zeros (TZs) based on an embedded asymmetrical square-ring resonator (ASRR). Firstly, we proposed a series of tri-/quad-/and quint-mode asymmetrical square-ring resonators which resonant modes are demonstrated by employing the multi-path matrix coupling analysis method. Further, we nested two identical ASRRs to construct multiple passbands and introduced multiple transmission zeros between frequency bands based on transversal signal interference concepts. Finally, tri-/quad-/quint-band BPFs are designed according to the proposed design principle using the proposed typical basic structure ASRR. The design, fabrication, and measurement of the three BPFs are conducted to validate their feasibility. The measured results consistently match the theoretical predictions, demonstrating superior performance, such as independent and controllable frequency band characteristics and abundant transmission zeros, while having promising potential to further expand frequency band designs.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords