Tunable impedance transformer using a transmission line with variable characteristic impedance

被引：12
|
作者：
Jeong, HT [1 ]
Kim, JE
Chang, IS
Kim, CD
机构：
[1] Sogang Univ, Dept Elect Engn, Seoul 100611, South Korea
[2] Sewon Teletech Inc, Kyungki 431804, South Korea
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2005年 / 53卷 / 08期
关键词：
diodes; impedance matching; transmission lines; tunable circuit and devices;
D O I：
10.1109/TMTT.2005.852758
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 proposes a new structure for a tunable impedance transformer. The proposed transformer consists of a quarter-wavelength transmission line with variable characteristic impedance. The operating principle of the variable characteristic impedance is based on the use of parallel combinations of multiple transmission lines and by controlling the line connection with RF switches. Multiple switches are inserted at the in/out terminals of each transmission line. Since a parallel microstrip transmission line has a unique structure that involves a partially removed ground plane under the conductor line, it is possible to realize a high characteristic impedance line with a wide linewidth.
引用
收藏
页码：2587 / 2593
页数：7
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