A Novel Compact Dual-Band Bandpass Filter Using SIRs with Open-Stub Line

Author

Gao, Shan ; Hu, Hong-Hong ; Xiao, Zhong-Yin

Author_Institution

Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai

fYear

2008

fDate

10-12 Sept. 2008

Firstpage

464

Lastpage

466

Abstract

In this paper, a novel compact dual-band bandpass filter using stepped impedance resonators (SIRs) with open-stub is presented. This filter is composed of two half-wavelength SIRs and open stubs. With properly coupled structure, this filter has compact size. The frequency response of dual-band at 2.4/5.7 GHz can be achieved by adjusting the impedance ratio (K) of SIR and the size of open stub. Simulated results show that this BPF has return loss of -21 dB at 2.4 GHz and -34 dB at 5.7 GHz, and 3-dB fractional bandwidths (FBW) of two passbands are 33% and 17%.

Keywords

UHF filters; band-pass filters; coupled circuits; microwave filters; resonator filters; coupled structure; dual-band bandpass filter; frequency 2.4 GHz; frequency 5.7 GHz; half-wavelength SIR; loss -21 dB; loss -34 dB; open-stub line; stepped impedance resonator; Band pass filters; Dual band; EMP radiation effects; Electromagnetic radiation; Electronic equipment; Frequency; High power microwave generation; Microwave devices; Power engineering and energy; Space vector pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008 China-Japan Joint

Conference_Location

Shanghai

Print_ISBN

978-1-4244-3821-1

Type

conf

DOI

10.1109/CJMW.2008.4772469

Filename

4772469