Microstrip Branch-Line Couplers for Crossover Application

被引：94
|
作者：
Yao, Jijun [1 ]
Lee, Cedric [2 ]
Yeo, Swee Ping [2 ]
机构：
[1] ASTAR, Inst Infocomm Res, Singapore, Singapore
[2] Natl Univ Singapore, Elect & Comp Engn Dept, Kent Ridge, Singapore
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2011年 / 59卷 / 01期
关键词：
Microstrip components; BUTLER MATRIX; DIRECTIONAL-COUPLERS; ANTENNA; BEAM;
D O I：
10.1109/TMTT.2010.2090695
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：
The branch-line coupler may be redesigned for crossover application. The bandwidth of such a coupler can be extended by suitably incorporating additional sections into the composite design. Laboratory tests on microstrip prototypes have shown the return loss and isolation of the three- and four-section couplers to be better than 20 dB over bandwidths of 22% and 33%, respectively. The insertion losses and group delays vary by less than +/- 0.05 dB and +/- 1 ns, respectively, for both prototypes.
引用
收藏
页码：87 / 92
页数：6
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