Title :
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
fDate :
2/1/1999 12:00:00 AM
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;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
