Novel Compact Branch-Line Coupler Using Non-Uniform Transmission line

被引：2
|
作者：
Hosseini, F. [1 ]
Hosseini, M. Khalaj-Amir [1 ]
Yazdani, M. [1 ]
机构：
[1] Iran Univ Sci & Technol, Dept Elect Engn, Tehran, Iran
来源：
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 | 2009年
关键词：
Compact branch-line coupler; nonuniform transmission lines; Characteristic impedance; truncated Fourier series;
D O I：
10.1109/APMC.2009.5384390
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new method of compact branch-line coupler is presented in this paper. The method utilizes nonuniform transmission lines (NTLs) instead of uniform transmission lines (UTLs) in each arm of branch-line. The normalized width w(z) /h function of the NTLs which is expanded in a truncated Fourier series is used for optimization. A 2-GHz branch-line coupler is designed, fabricated and measured. The measurement results are in good agreement with the simulation results. This new structure exhibits 50% size reduction (in circuit area) as compared with the conventional branch-line coupler.
引用
收藏
页码：1577 / 1580
页数：4
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