Title :
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
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;
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
DOI :
10.1109/ICASIC.2007.4415700
