A Planar Dual 180° Hybrid Using Multicoupled Line Sections

被引：1

作者：

Lai, Yu-Ann ^{[1
]}

Chen, Chun-Nien ^{[1
]}

Chang, Young-Hsing ^{[1
]}

Wang, Yeong-Her ^{[1
,2
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 70101, Taiwan

[2] Natl Appl Res Lab, Taipei 106, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2011年 / 21卷 / 02期

关键词：

Balanced circuit; coupled line; dual Marchand balun; 180 degrees hybrid planar; STAR MIXER; BALUN;

D O I：

10.1109/LMWC.2010.2098860

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 novel planar dual 180 degrees hybrid using multicoupled line technology is presented. The proposed structure adopts the power divider and two types of multicoupled lines to improve the return loss and isolation at the balance outputs of a traditional dual Marchand balun. The proposed hybrid allows output ports to be located arbitrarily, which eliminates the complex layout while the dual 180 hybrid applied to balanced radio frequency circuits. This hybrid is designed and implemented on an FR-4 printed circuit board at 2.4 GHz. The measured return loss is lower than -19.7 dB, and the isolation between the two-pair balanced output ports are lower than -28.2 dB from 2.2 to 2.7 GHz. The measured insertion loss and phase imbalance between the two-pair balanced output ports are lower than 8.7 dB and 4.5 degrees, respectively, at the operating frequency of 2.1-2.9 GHz.

引用

页码：68 / 70

页数：3