COMPACT PLANAR MICROSTRIP BRANCH-LINE COUPLER USING EQUAL DIFFERENCE STRUCTURE

被引：5

作者：

Chen, Ja-Hao ^{[1
]}

Yuan, Shih-Yi ^{[1
]}

Liou, Shi-Rong ^{[1
]}

Liao, Shry-Sann ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Commun Engn, Taichung, Taiwan

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 03期

关键词：

branch-line coupler; equal difference structure; quasi-lumped elements; compact size; SIZE;

D O I：

10.1002/mop.30364

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：

A compact planar microstrip branch-line coupler using equal difference structures was implemented and measured. Using the equal difference structure effectively reduced the quarter-wavelength microstrip line and minimized the branch-line coupler dimension as a result of a novel triangular profile of the structure streamlining the circuit area. Compared with that of conventional planar microstrip branch-line couplers, the optimized area of the proposed coupler was reduced by 84.2% at a 900 MHz operating frequency. The measured insertion loss, isolation, and return loss performances achieved superior results than 3.9, 23, and 16 dB, respectively, and the measured phase difference between the two output ports was 90 degrees +/- 0.1 degrees. Notably, a coupler using equal difference structures can be implemented in standard printed circuit board processes without any lumped elements, bonding wires, or via-holes, easing integration with wireless communication systems. (C) 2016 Wiley Periodicals, Inc.

引用

页码：664 / 668

页数：5

共 13 条

[1] Toward integrated circuit size reduction [J].