Design of compact directional couplers for UWB applications

被引：183

作者：

Abbosh, Amin M. ^{[1
]}

Bialkowski, Marek E. ^{[1
]}

机构：

[1] Univ Queensland, Sch Informat Technol & Elect Engn, St Lucia, Qld 4072, Australia

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2007年 / 55卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

compact ultra-widebaud (UWB) couplers; coupled circuits; directional couplers; planar coupler design;

D O I：

10.1109/TMTT.2006.889150

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 paper presents a simple design method for a class of compact couplers, which offer coupling in the range of 3-10 dB over an ultra-wide frequency hand from 3.1 to 10.6 GHz. The proposed couplers are formed by two elliptically shaped microstrip lines, which are broadside coupled through an elliptically shaped slot. Their design is demonstrated for a 3-, 6-, and 10-dB coupling assuming a 0.508-mm-thick Rogers RO4003C substrate. Results of simulation and measurements show that the designed devices exhibit a coupling of 3 +/- 1 dB, 6 +/- 1.4 dB and 10 +/- 1.5 dB across the 3.1-10.6-GHz band. This ultra-wideband coupling is accompanied by isolation and return loss in the order of 20 dB or better. The manufactured devices including microstrip ports occupy an area of 25 mm x 15 mm.

引用

页码：189 / 194

页数：6

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