Title :
Design of planar dual-band bandpass filters with stepped-impedance resonators
Author :
Liang-Ying Chen ; Ching-Wen Tang ; Chien-Tai Tseng ; Yuan-Chih Lin
Author_Institution :
Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
Novel planar dual-band bandpass filters with stepped-impedance resonators have been proposed. The central frequency of dual passbands can be easily controlled by the stepped-impedance resonators. Moreover, two stepped-impedance open stubs can generate transmission zero between two passbands, therefore the isolation can be increased. With the proposed structure, additional transmission zeros will appear around two passbands. In addition, the match between measurement and the theoretical simulation validates the proposed structure.
Keywords :
band-pass filters; circuit simulation; microstrip filters; central frequency; planar dual-band bandpass filters; stepped-impedance open stubs; stepped-impedance resonators; transmission zero; Band-pass filters; Dual band; Filtering theory; Loss measurement; Microwave filters; Passband; Resonator filters; Dual-band bandpass filter; stepped-impedance resonator;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2013 Asia-Pacific
Conference_Location :
Seoul
DOI :
10.1109/APMC.2013.6694851
