Compact Dual-Band Branch-Line Coupler With Dual Transmission Lines

被引：47
|
作者：
Gai, Chao [1 ]
Jiao, Yong-Chang [1 ]
Zhao, Yu-Long [2 ]
机构：
[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China
[2] Univ Calgary, Dept Elect & Comp Engn, Intelligent RF Radio Lab iRadio Lab, Calgary, AB 1N4 AB, Canada
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2016年 / 26卷 / 05期
关键词：
Branch-line coupler; compact size; dual-band; planar structure; pi-shaped dual transmission lines; HYBRID COUPLERS; DESIGN;
D O I：
10.1109/LMWC.2016.2549099
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：
This letter presents a dual-band branch-line coupler with compact size and planar structure. The pi-shaped dual transmission lines structure is used to realize 90 degrees phase shift at two arbitrary frequencies. Explicit design equations are derived using the ABCD and admittance matrices. For verification, a prototype is designed, fabricated, and tested. The coupler has a compact size with 76% size reduction compared with the conventional circuit at the first band. The measured results are in good agreement with the simulated results.
引用
收藏
页码：325 / 327
页数：3
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