A tri-section stepped impedance bandpass filter with harmonic suppression

Author

Wang, Yunxiu ; Wang, Bing-Zhong ; Wang, Jianpeng

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

fYear

2007

fDate

22-25 Oct. 2007

Firstpage

592

Lastpage

595

Abstract

A compact microstrip bandpass filter with harmonic suppression is presented in this letter. The filter is composed of two tri-section stepped impedance resonators cascaded and two end-open L-shaped microstrip lines for the input and output feed lines. The harmonic suppression of the bandpass filter may be realized by choosing proper lengths for the L-shaped microstrip lines and proper impedance ratios of the stepped impedance resonator. The filter has been investigated numerically. Simulation results show that the second-order harmonic response is effectively suppressed, and the rejection level is kept below -19 dB.

Keywords

band-pass filters; harmonics suppression; microstrip filters; microstrip lines; resonator filters; compact microstrip bandpass filter; end-open L-shaped microstrip lines; feed lines; harmonic suppression; impedance ratio; second-order harmonic response; tri-section stepped impedance bandpass filter; tri-section stepped impedance resonators; Band pass filters; Frequency; Harmonics suppression; Impedance; Microstrip filters; Microstrip resonators; Passband; Physics; Power harmonic filters; Resonator filters;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2007. ASICON '07. 7th International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4244-1132-0

Electronic_ISBN

978-1-4244-1132-0

Type

conf

DOI

10.1109/ICASIC.2007.4415700

Filename

4415700