Design of a Wideband Balun Using Parallel Strips

被引：24

作者：

Shao, Jin ^{[1
,2
]}

Zhou, Rongguo ^{[3
]}

Chen, Chang ^{[4
]}

Wang, Xiao-Hua ^{[5
]}

Kim, Hyoungsoo ^{[3
]}

Zhang, Hualiang ^{[3
]}

机构：

[1] Univ N Texas, Dept Elect Engn, Denton, TX 76203 USA

[2] Univ N Texas, Comp Sci & Engn Dept, Denton, TX 76203 USA

[3] Univ N Texas, Dept Elect Engn, Denton, TX USA

[4] Univ Sci & Technol China, Dept EEIS, Hefei 230026, Anhui, Peoples R China

[5] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2013年 / 23卷 / 03期

关键词：

Balun; even-odd mode; exact synthesis; impedance transformer; phase inverter; wideband; FILTER;

D O I：

10.1109/LMWC.2013.2246150

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 wideband balun designed by exact synthesis is presented in this letter. The designed balun has a symmetrical four-port structure with one port open-ended. It consists of a wideband impedance transformer and a broadband phase inverter, which is realized by connecting bottom and top layer parallel strip through two via holes. To design the wideband impedance transformer, an S-plane highpass prototype has been exactly synthesized with third-order Chebyshev response. The proposed design procedure is very flexible, and it can be easily scaled for other frequency bands. A wideband parallel strip balun operating from 0.72 to 2.05 GHz is fabricated and tested to verify the design concepts. The measured results match well with the design theory.

引用

页码：125 / 127

页数：3

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