Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers

Chih Chun Chang; Yen Hsiu Wei; Kuo Sheng Chin

doi:10.1109/MWSYM.2017.8058845

Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers

Chih Chun Chang
, Yen Hsiu Wei
, Kuo Sheng Chin

Department of Electronic Engineering

Chang Gung University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

This paper presents a dual-band -90°/+90° transmission line for the miniaturization of dual-band rat-race couplers. This line was constructed using two diagonally end-shorted coupled-line sections tapped by open stubs at their center. The proposed structure has the advantages of -90°/+90° electrical lengths at two arbitrary frequencies and high equivalent characteristic impedances, enabling the creation of small couplers that have a large power-split ratio of up to 1:32. Using the proposed structure, a rat-race coupler operated at 2.4/5.1 GHz with a power-split ratio of 1:4 was fabricated for demonstration. This circuit occupies only 44% of the area of existing dual-band rat-race couplers.

Original language	English
Title of host publication	2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1289-1292
Number of pages	4
ISBN (Electronic)	9781509063604
DOIs	https://doi.org/10.1109/MWSYM.2017.8058845
State	Published - 04 10 2017
Event	2017 IEEE MTT-S International Microwave Symposium, IMS 2017 - Honololu, United States Duration: 04 06 2017 → 09 06 2017

Publication series

Name	IEEE MTT-S International Microwave Symposium Digest
ISSN (Print)	0149-645X

Conference

Conference	2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Country/Territory	United States
City	Honololu
Period	04/06/17 → 09/06/17

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

Keywords

Dual-band transmission line
Rat-race coupler

Access to Document

10.1109/MWSYM.2017.8058845

Cite this

Chang, C. C., Wei, Y. H., & Chin, K. S. (2017). Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers. In 2017 IEEE MTT-S International Microwave Symposium, IMS 2017 (pp. 1289-1292). Article 8058845 (IEEE MTT-S International Microwave Symposium Digest). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2017.8058845

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title = "Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers",

abstract = "This paper presents a dual-band -90°/+90° transmission line for the miniaturization of dual-band rat-race couplers. This line was constructed using two diagonally end-shorted coupled-line sections tapped by open stubs at their center. The proposed structure has the advantages of -90°/+90° electrical lengths at two arbitrary frequencies and high equivalent characteristic impedances, enabling the creation of small couplers that have a large power-split ratio of up to 1:32. Using the proposed structure, a rat-race coupler operated at 2.4/5.1 GHz with a power-split ratio of 1:4 was fabricated for demonstration. This circuit occupies only 44\% of the area of existing dual-band rat-race couplers.",

keywords = "Dual-band transmission line, Rat-race coupler",

author = "Chang, \{Chih Chun\} and Wei, \{Yen Hsiu\} and Chin, \{Kuo Sheng\}",

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language = "英语",

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Chang, CC, Wei, YH & Chin, KS 2017, Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers. in 2017 IEEE MTT-S International Microwave Symposium, IMS 2017., 8058845, IEEE MTT-S International Microwave Symposium Digest, Institute of Electrical and Electronics Engineers Inc., pp. 1289-1292, 2017 IEEE MTT-S International Microwave Symposium, IMS 2017, Honololu, United States, 04/06/17. https://doi.org/10.1109/MWSYM.2017.8058845

Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers. / Chang, Chih Chun; Wei, Yen Hsiu; Chin, Kuo Sheng.
2017 IEEE MTT-S International Microwave Symposium, IMS 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 1289-1292 8058845 (IEEE MTT-S International Microwave Symposium Digest).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - This paper presents a dual-band -90°/+90° transmission line for the miniaturization of dual-band rat-race couplers. This line was constructed using two diagonally end-shorted coupled-line sections tapped by open stubs at their center. The proposed structure has the advantages of -90°/+90° electrical lengths at two arbitrary frequencies and high equivalent characteristic impedances, enabling the creation of small couplers that have a large power-split ratio of up to 1:32. Using the proposed structure, a rat-race coupler operated at 2.4/5.1 GHz with a power-split ratio of 1:4 was fabricated for demonstration. This circuit occupies only 44% of the area of existing dual-band rat-race couplers.

AB - This paper presents a dual-band -90°/+90° transmission line for the miniaturization of dual-band rat-race couplers. This line was constructed using two diagonally end-shorted coupled-line sections tapped by open stubs at their center. The proposed structure has the advantages of -90°/+90° electrical lengths at two arbitrary frequencies and high equivalent characteristic impedances, enabling the creation of small couplers that have a large power-split ratio of up to 1:32. Using the proposed structure, a rat-race coupler operated at 2.4/5.1 GHz with a power-split ratio of 1:4 was fabricated for demonstration. This circuit occupies only 44% of the area of existing dual-band rat-race couplers.

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Design of dual-band -90°/+90° transmission lines for miniaturized dual-band 1:4 rat-race couplers

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