Dual-band bandpass filters using SIRs with open-stub line and zero-degree feed structure

Author

Zuxue Xia ; Falin Liu

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2013

fDate

14-18 April 2013

Firstpage

1

Lastpage

4

Abstract

A novel compact dual-band bandpass filter (DBPF) using SIRs with open-stub line and 0-degree feed structure is presented in this paper. The low-band is obtained by using hairpin type Stepped Impedance Resonators (SIR) split ring through electrical coupling, And by tuning a pair of open-stub lines the high-band is realized too. In order to improve the stop band attenuation, zero-degree feed structure is implemented to introduce three transmission zeros. So the proposed DBPF has high selectivity, and is also simple in design and compact in structure. Finally the proposed filter is designed and fabricated, and the simulation and test results are in good agreement.

Keywords

UHF filters; UHF resonators; band-pass filters; microstrip filters; microwave filters; microwave resonators; resonator filters; SIR; dual band bandpass filter; frequency 2.4 GHz; frequency 3.5 GHz; hairpin type stepped impedance resonators; open stub line structure; split ring resonator; transmission zero; zero degree feed structure; zero-degree feed structure; Band-pass filters; Dual band; Feeds; Filtering theory; Microwave filters; Resonant frequency; Resonator filters; SIR; dual-band filter; open-stub line; zero-degree feed structure;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2013 IEEE International

Conference_Location

Beijing

Type

conf

DOI

10.1109/IEEE-IWS.2013.6616804

Filename

6616804