Analysis of Frequency-Selective Impedance Loading of Transmission Lines for Dual-Band Couplers

被引：10
|
作者：
Rawat, Karun [1 ,2 ]
Ghannouchi, Fadhel M. [1 ]
Rawat, Meenakshi [1 ,2 ]
Hashmi, Mohammad S.
机构：
[1] Univ Calgary, Dept Elect & Comp Engn, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada
[2] Univ Calgary, IRadio Lab, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2011年 / 21卷 / 03期
关键词：
stub-loaded line; dual-band; rat-race balun; branch-line hybrid; commercial communication bands; dispersion; microstrip; transmission line; couplers; GSM; CDMA; WiMax; WCDMA; DESIGN; RING;
D O I：
10.1002/mmce.20521
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This article proposes an analytical design methodology for dual-band hybrid couplers and baluns structures for any arbitrary frequency ratio using a stub-loaded transmission line. An analysis of changing the impedance behavior of the stub, is carried out for the two bands of operation, which along with a dispersive analysis, emphasizes certain conditions where the existing methodology is not applicable. In addition, an extra degree of freedom has been included to increase the solutions for a given frequency ratio, thus providing greater flexibility and feasibility of the proposed structure. The design methodology is experimentally validated with the design and fabrication of dual-band branch-line and rat-race couplers for various commercial frequency bands. (C) 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE 21:325-335, 2011.
引用
收藏
页码：325 / 335
页数：11
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