Title :
High-selectivity dual-band bandpass filter using asymmetric stepped-impedance resonators
Author :
Zhang, X.Y. ; Chen, Ji-Xin ; Shi, Jack ; Xue, Quan
Author_Institution :
Wireless Commun. Res. Center, Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong
Abstract :
A dual-band bandpass filter with high selectivity is presented. Using only a single set of asymmetric stepped-impedance resonators, this filter can create five transmission zeros near the passband edges and between the two passbands to improve the selectivity. Based on the proposed idea, a microstrip dual-band bandpass filter is implemented.
Keywords :
band-pass filters; microstrip filters; resonator filters; asymmetric stepped-impedance resonators; microstrip dual-band bandpass filter; transmission zeros;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20091939
