Design of dual-mode filters using stepped impedance resonators with stub loading

Author

Xu, Zhi-tao ; Xu, Jun

Author_Institution

Sch. of Phys. & Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

4

fYear

2012

fDate

5-8 May 2012

Firstpage

1

Lastpage

3

Abstract

A new type of stepped impedance resonator (SIR) for dual-mode bandpass filter application is proposed in this paper. The characteristic of the proposed stepped impedance resonator is investigated. With the use of proposed stepped impedance resonator, this filter can generate two reflection zeros in the passband. The technique of utilizing input-output cross-coupling to generate two transmission zeros at the out-of band. A dual-mode microstrip BPF have been designed, fabricated, and measured. The measured results exhibit good agreement with the simulation results.

Keywords

band-stop filters; microstrip filters; microstrip resonators; SIR; dual-mode bandpass filter design; dual-mode microstrip BPF fabrication; dual-mode microstrip BPF measurement; dual-mode microstrip resonator; input-output cross-coupling; reflection zero; stepped impedance resonators; stub loading; transmission zero; Band pass filters; Filtering theory; Impedance; Loading; Microstrip filters; Resonant frequency; Resonator filters; Dual-mode filters; dual-mode resonators; stepped impedance resonators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4673-2184-6

Type

conf

DOI

10.1109/ICMMT.2012.6230282

Filename

6230282