Transmission-line filters with capacitively lodded coupled lines

被引：39

作者：

Tsai, CM ^{[1
]}

Lee, SY ^{[1
]}

Lee, HM ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2003年 / 51卷 / 05期

关键词：

coupled transmission lines; distributed parameter filters; microwave circuits; transmission-line resonators;

D O I：

10.1109/TTMT.2003.810133

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：

Coupled lines with loads, at one end, which can create tunable transmission zeros, are studied in this paper. The equation for the transmission zeros is derived from the analysis of even- and odd-mode excitations. Based on this equation, coupled lines with different loads are analyzed and the rules for controlling the transmission-zero frequency are given. The structures are used in the designs of several second-order filters and they are experimentally verified. The use of a skew-symmetric (0degrees) feed structure in these filters is also discussed and an example is given.

引用

页码：1517 / 1524

页数：8

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