High Selectivity Cascaded Quadruplet Bandpass Filter with Three Pairs of Transmission Zeros

• Published in: Chinese Journal of Electronics Vol. 26; no. 5; pp. 1101 - 1104
• Main Authors: Chen, Jianfeng, Chen, Fuchang, Li, Runshuo, Xie, Zeming, Chu, Qingxin
• Format: Journal Article
• Language: English
• Published: Published by the IET on behalf of the CIE 01.09.2017
• Subjects: Bandpass filter; band‐pass filters; Cascaded quadruplet (CQ); Cross coupling; frequency 3.0 GHz; high selectivity cascaded quadruplet bandpass filter; Microstrip; microstrip Cascaded quadruplet bandpass filter; microstrip filters; microwave filters; poles and zeros; resonator filters; three‐quarter wavelength resonators; Transmission zeros; microstrip Cascaded quadruplet bandpass filter; resonator filters; Cross coupling; microstrip filters; frequency 3.0 GHz; Cascaded quadruplet (CQ); high selectivity cascaded quadruplet bandpass filter; Microstrip; poles and zeros; three-quarter wavelength resonators; Bandpass filter; band-pass filters; microwave filters; transmission zeros

A novel microstrip Cascaded quadruplet（CQ） bandpass filter using quarter wavelength resonators and three-quarter wavelength resonators is proposed.Based on cross coupling and source-load coupling,three pairs of finite transmission zeros are generated at the stopband.As a result,the out-of-band rejec...