Trans-directional coupler with capacitor-shunted ground-defected coupled CPWs and inductor-loaded ACPWs for weak coupling applications

被引：6

作者：

Liu, H. M. ^{[1
]}

Wang, Z. B. ^{[1
]}

Fang, S. J. ^{[1
]}

机构：

[1] Dalian Maritime Univ, Sch Informat Sci & Technol, Dalian 116026, Liaoning, Peoples R China

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2013年 / 27卷 / 01期

基金：

中国国家自然科学基金;

关键词：

BRANCH-LINE COUPLER; MICROSTRIP; DESIGN; 90-DEGREES; ANTENNA;

D O I：

10.1080/09205071.2013.739541

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：

Trans-directional (TRD) couplers with capacitor-shunted ground-defected coupled coplanar waveguides (CPWs) and inductor-loaded asymmetric coplanar waveguides are proposed for weak coupling applications. To achieve weak coupling as well as perfect impedance match, unequal shunt capacitors and same series inductors are loaded on the coupled CPWs. In addition, a defected-ground structure is etched under the coupled CPWs for realizing high-impedance coupled lines with the printed circuit board technology. Two TRD couplers with coupling values of 10 and 20dB are investigated theoretically and experimentally. The measured results show that the directivity of the proposed TRD coupler is better than that of conventional parallel-coupled microstrip-line coupler.

引用

页码：104 / 116

页数：13