A balanced tri-band BPF with high selectivity based on ASSLR-Reference-Cited by-同舟云学术

A balanced tri-band BPF with high selectivity based on ASSLR

Published:2022-07-20 Issue:3-4 Volume:77 Page:147-153
ISSN:0016-1136
Container-title:Frequenz
language:en
Short-container-title:

Author:

Chen Lei¹,Wang Min¹,Zhang Tian Tian¹,Peng Jia Yi¹,Wei Feng²

Affiliation:

1. School of Electronic and Information Engineering , Xi’an Technological University , Xi’an 710021 , P. R. China

2. National Key Laboratory of Antenna and Microwave Technology , Xidian University , Xi’an 710071 , P. R. China

Abstract

Abstract In this paper, a balanced second-order tri-band bandpass filter (BPF) with high selectivity is proposed. Three differential-mode (DM) passbands are formed by applying one pair of asymmetric short stub-loaded resonators (ASSLRs) and uniform impedance resonators (UIRs) into the design. Meanwhile, the frequencies and bandwidths of the DM passbands can be quasi-independently controlled by the lengths of resonators and the gaps between them. In addition, broadband common-mode (CM) suppression is achieved intrinsically without affecting the DM parts based on the U-type balanced stepped-impedance microstrip-slotline transition (BSIMST) structures, thereby simplifying the design procedure significantly. In order to validate the practicability, a balanced tri-band BPF operating at 1.8, 3.5 and 4.45 GHz is fabricated and designed. A good agreement between the simulated and measured results is observed.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering

Link

https://www.degruyter.com/document/doi/10.1515/freq-2022-0071/pdf

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