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

页码：87 / 92

页数：6

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