Title :
Design of dual-band bandstop filter with low frequency ratio
Author :
Jie-Ming Qiu ; Fu-Chang Chen ; Qing-Xin Chu
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
This paper presents a dual-band bandstop filter by using stub-loaded resonators. The frequencies of the two stopbands are 1.6G and 2.4G, respectively, with the frequency ratio of 1.5. Several zero points are introduced, which significantly improve the skirt selectivity. The frequency ratio can be flexibly designed, and the fractional bandwidths of each stopband can be controlled conveniently. Moreover, high attenuation is achieved in both stopbands.
Keywords :
band-stop filters; equivalent circuits; dual-band bandstop filter; equivalent circuits; low frequency ratio; second-order filter; stub-loaded resonators; Bandwidth; Dual band; Frequency control; Microwave filters; Resonant frequency; Resonator filters; Transmission line measurements; Low frequency ratio; bandstop filter; dual-band; microstrip; stub-loaded resonator;
Conference_Titel :
Wireless Symposium (IWS), 2013 IEEE International
Conference_Location :
Beijing
DOI :
10.1109/IEEE-IWS.2013.6616754
