Arbitrary filter design by using nonuniform transmission lines

Author

Pan, Te-Wen ; Hsue, Ching-Wen ; Huang, Jhin-Fang

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

9

Issue

2

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

60

Lastpage

62

Abstract

We develop new formulations of reflection and transmission coefficients of nonuniform transmission lines having unequal reference impedances. By using the ABCD transmission matrix of a transmission line, we express the reflection and transmission coefficients of a nonuniform line as polynominal ratios in Z transforms. These formulations, in conjunction with digital signal processing (DSP) techniques and a reconstruction method, lead to the realization of nonuniform lines which satisfy prescribed scattering characteristics in frequency domain. Some examples are presented to illustrate the validity of this technique

Keywords

S-parameters; Z transforms; distributed parameter filters; linear network synthesis; matrix algebra; microwave filters; passive filters; polynomials; ABCD transmission matrix; DSP techniques; Z transforms; filter design; nonuniform transmission lines; polynominal ratios; reconstruction method; reflection coefficients; scattering characteristics; transmission coefficients; unequal reference impedances; Digital signal processing; Distributed parameter circuits; Filters; Frequency domain analysis; Impedance; Linear matrix inequalities; Reconstruction algorithms; Reflection; Scattering; Transmission line matrix methods;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.755046

Filename

755046