Compact Quasi-Elliptic Wideband Bandpass Filter Using Cross-Coupled Multiple-Mode Resonator

Author

Ren, Si-Wei ; Peng, Hong-Li ; Mao, Jun-Fa ; Gao, An-Ming

Author_Institution

Key Lab. of Minist. of Educ. of China for Res. of Design & Electromagn. Compatibility of High speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China

Volume

22

Issue

8

fYear

2012

Firstpage

397

Lastpage

399

Abstract

A novel compact wideband bandpass filter (BPF) is proposed based on cross-coupled multiple-mode resonator (MMR). The proposed resonator is constructed by introducing cross coupling between the high-impedance lines of a classical MMR. It is shown that new symmetrical pairs of transmission zeros (TZs) can be generated at the lower and upper stopbands, respectively, leading to a quasi-elliptic function response that enhances the selectivity and out-of-band rejection significantly. One filter prototype is designed, fabricated and measured for validation and shows the expected performance.

Keywords

band-pass filters; resonators; compact quasielliptic wideband bandpass filter; cross-coupled multiple-mode resonator; quasielliptic function response; transmission zeros; Band pass filters; Couplings; Passband; Resonant frequency; Wideband; Wireless communication; Bandpass filter (BPF); cross coupling; multiple-mode resonator (MMR); quasi-elliptic; wideband;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2205230

Filename

6236234