Design of Wide Passband Microstrip Branch-Line Couplers With Multiple Sections

被引:34
|
作者
Tang, Ching-Wen [1 ,2 ]
Tseng, Chien-Tai [3 ]
Hsu, Ko-Cheng [3 ]
机构
[1] Natl Chung Cheng Univ, Adv Inst Mfg High Tech Innovat, Dept Commun Engn, Chiayi 621, Taiwan
[2] Natl Chung Cheng Univ, Adv Inst Mfg High Tech Innovat, Dept Elect Engn, Chiayi 621, Taiwan
[3] Natl Chung Cheng Univ, Dept Elect Engn, Chiayi 621, Taiwan
关键词
Branch-line coupler; multisectional branch-line coupler; wide passband; DIRECTIONAL-COUPLERS;
D O I
10.1109/TCPMT.2014.2320499
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Novel design equations are proposed for the 3-dB microstrip branch-line coupler with a wide passband, utilizing multisectional branch lines. In addition, the proposed method makes it possible to reduce the internal impedance levels of branch-line couplers so they may be physically constructed by microstrip lines. Further, in terms of measured results, there is a wide bandwidth >70%. Synthesis of the 3-dB branch-line coupler is described in details as well. Good agreement between theoretical calculation and measurement validates the proposed method.
引用
收藏
页码:1222 / 1227
页数:6
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