Publishing Service

Polishing & Checking

Journal of Zhejiang University SCIENCE A

ISSN 1673-565X(Print), 1862-1775(Online), Monthly

2005 Vol.6 No.6 P.483-486

A tunable dual-broad-band branch-line coupler utilizing composite right/left-handed transmission lines

ZHANG Yu, HU Li, HE Sai-ling

Centre for Optical and Electromagnetic Research, Joint Research Centre of Photonics of the Royal Institute of Technology(Sweden) and Zhejiang University, Zhejiang University, Hangzhou 310027, China; Division of Electromagnetic Theory, Alfven Laboratory, Royal Institute of Technology, S-100 44, Stockholm, Sweden

zhangyu@coer.zju.edu.cn; sailing@ieee.org

Abstract: A tunable dual-broad-band branch-line coupler (BLC) utilizing composite right/left-handed (CRLH) transmission lines is presented. Two λ/4 segments consisting of CRLH transmission lines are added to each port to broaden the dual bands of the branch-line coupler. Numerical simulation and optimal design of the novel coupler are presented. The dual bands of the novel coupler are tunable and broad. The 1-dB bandwidth of each pass band is more than 16% of the central frequency.

Key words: Branch-line coupler (BLC), Broad band, Dual-band, Composite right/left-handed (CRLH), Left-handed, Tunable


Share this article to： More

Go to Contents

References:

<Show All>

Open peer comments: Debate/Discuss/Question/Opinion

<1>

zhxh@nwpu<zhxhwinnie@163.com>

2010-11-19 19:45:18

maybe it is a good design.

Please provide your name, email address and a comment





DOI:

10.1631/jzus.2005.A0483

CLC number:

O441

Download Full Text:

Click Here

Downloaded:

4056

Clicked:

6612

Cited:

4

On-line Access:

2024-08-27

Received:

2023-10-17

Revision Accepted:

2024-05-08

Crosschecked:

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952276; Fax: +86-571-87952331; E-mail: jzus@zju.edu.cn
Copyright © 2000~ Journal of Zhejiang University-SCIENCE