Transmission-line filters with capacitively loaded coupled lines

Chih Ming Tsai; Sheng Yuan Lee; Hong Ming Lee

doi:10.1109/TMTT.2003.810133

Transmission-line filters with capacitively loaded coupled lines

Chih Ming Tsai, Sheng Yuan Lee, Hong Ming Lee

Institute of Computer and Communication Engineering

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

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 (0°) feed structure in these filters is also discussed and an example is given.

Original language	English
Pages (from-to)	1517-1524
Number of pages	8
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	51
Issue number	5
DOIs	https://doi.org/10.1109/TMTT.2003.810133
Publication status	Published - 2003 May

All Science Journal Classification (ASJC) codes

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2003.810133

Cite this

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title = "Transmission-line filters with capacitively loaded coupled lines",

abstract = "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 (0°) feed structure in these filters is also discussed and an example is given.",

author = "Tsai, {Chih Ming} and Lee, {Sheng Yuan} and Lee, {Hong Ming}",

note = "Funding Information: Manuscript received May 28, 2002; revised December 1, 2002. This work was supported in part by the National Science Council, Taiwan, R.O.C., under Grant NSC 90-2213-E-006-054.",

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AU - Lee, Sheng Yuan

AU - Lee, Hong Ming

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N2 - 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 (0°) feed structure in these filters is also discussed and an example is given.

AB - 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 (0°) feed structure in these filters is also discussed and an example is given.

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Transmission-line filters with capacitively loaded coupled lines

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