Design of Cross-Coupled Quarter-Wave SIR Filters with Plural Transmission Zeros

Author

Hsu, Ching-Luh ; Kuo, Jen-Tsai

Author_Institution

Dept. of Electron. Eng., Ta Hwa Inst. of Technol., Hsinchu

fYear

2006

fDate

11-16 June 2006

Firstpage

1205

Lastpage

1208

Abstract

A cross-coupled bandpass filter is designed with quarter-wave stepped-impedance resonators (SIRs) on a single circuit plane. The entire circuit has not only a compact area since half-sized SIRs are used, but also a wide upper stopband because the first spurious peak occurs at a frequency much higher than the passband. Plural transmission zeros on both sides of the passband can be realized by non-adjacent couplings and tapped input/output. Two-port Z-parameters are employed to formulate the analysis of the transmission zeros. An experimental filter is fabricated and measured to validate the design

Keywords

band-pass filters; comb filters; coupled circuits; network synthesis; resonator filters; two-port networks; bandpass filter; combline filter; cross-coupled quarter-wave SIR filter; passband filter; plural transmission zero; stepped-impedance resonators; two-port Z-parameters; Band pass filters; Coplanar waveguides; Coupling circuits; Design engineering; Filtering theory; Frequency; Impedance; MIM capacitors; Passband; Resonator filters; Bandpass filter; combline filter; cross-coupled stepped-impedance resonator (SIR); transmission zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249426

Filename

4015138