Design of Compact Quad-Frequency Impedance Transformer Using Two-Section Coupled Line

被引:21
|
作者
Bai, Yan-Fu [1 ]
Wang, Xin-Huai [1 ]
Gao, Chang-Jia [1 ]
Huang, Qiu-Lin [1 ]
Shi, Xiao-Wei [1 ]
机构
[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China
基金
美国国家科学基金会;
关键词
Coupled line; impedance transformer; quad frequency; BROAD-BAND;
D O I
10.1109/TMTT.2012.2202682
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 paper presents a compact quad-frequency impedance transformer that is composed of a two-section coupled line to achieve ideal impedance matching at three arbitrary frequencies and a related frequency. The exact closed-form equations and design procedures are given based on strict theoretical analysis. After demonstrating the bandwidth performance and symmetry properties of different impedance transform ratios, we fabricated a circuit to show the validity of practical applications. Good agreement between the measured data and anticipated results is achieved.
引用
收藏
页码:2417 / 2423
页数:7
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