A COMPACT DUAL BAND BRANCH LINE COUPLER WITH ARBITRARY POWER DIVISION RATIO

被引：5
|
作者：
Kim, Kwisoo [1 ]
Lim, Jongsik [1 ]
Kim, Kwangsoo [2 ]
Ahn, Dal [1 ]
机构：
[1] Soonchunhyang Univ, Dept Elect Commun Engn, Asan, Chungnam, South Korea
[2] Sogang Univ, Sogang Inst Adv Technol, Dept Elect Engn, Seoul, South Korea
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2010年 / 52卷 / 07期
关键词：
branch line coupler (BLC); dual band coupler; pi-type equivalent circuit; DESIGN;
D O I：
10.1002/mop.25258
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：
This article presents a compact dual-band (DB) branch line coupler (BLC) with different power division ratio at arbitrary two frequency bands. In this article, we add a technique to satisfy transmission lines of conventional BLC with different impedance at two bands, while they are transformed to it-type equivalent circuits. The design equations for DB BLC with different coupling coefficients at two bands are given. Furthermore, folded shape of shunt lines make about 77% circuit dimension comparing to conventional single-band BLC. A DB BLC operating different power division ratio at 0.9 and 2.0 GHz is demonstrated in excellent agreement with both circuit simulation and experimental results. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1476-1480, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25258
引用
收藏
页码：1476 / 1480
页数：5
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