Design of Balanced Filtering Rat-Race Coupler Based on Quad-Mode Dielectric Resonator

A balanced filtering rat-race coupler is proposed based on a quad-mode dielectric resonator (DR) in this brief. Due to the electromagnetic-field distributions of the DR, the desired balanced performance with high common-mode suppression is realized without additional circuits. Moreover, by setting t...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 68; no. 7; pp. 2267 - 2271
Main Authors Xu, Jin-Xu, Huang, Mo, Li, Hui-Yang, Yang, Yang, Zhang, Xiu Yin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Balanced rat-race coupler
Band-pass filters
Bandpass filters
Circuit design
compact size
Couplers
Couplings
Filtering
multi-functional
Probes
Q-factor
quad-mode dielectric resonator
Resonators
Topology
Online AccessGet full text

Cover

More Information
Summary:A balanced filtering rat-race coupler is proposed based on a quad-mode dielectric resonator (DR) in this brief. Due to the electromagnetic-field distributions of the DR, the desired balanced performance with high common-mode suppression is realized without additional circuits. Moreover, by setting the feeding probes at the proper locations, the quad-mode DR is also used to obtain the desired coupler topology with filtering responses. Accordingly, a balanced filtering rat-race coupler, integrating three circuit functions of the balanced circuit, rat-race coupler, and bandpass filter, can be designed into a single-cavity configuration, resulting in a very compact size. For verification, the proposed circuit is implemented, which shows good filtering responses, low amplitude imbalance, high common-mode suppression, and excellent phase characteristics.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2021.3053192