Compact dual-band bandpass filter using defected microstrip structure for GPS and WLAN applications

Author

Liu, H.W. ; Zhang, Z.C. ; Wang, Shuhui ; Zhu, L. ; Guan, X.H. ; Lim, J.S. ; Ahn, Dukju

Author_Institution

Coll. of Inf. Eng., East China of Jiaotong Univ., Nanchang, China

Volume

46

Issue

21

fYear

2010

fDate

10/1/2010 12:00:00 AM

Firstpage

1444

Lastpage

1445

Abstract

A modified defected microstrip structure (DMS) for designing a dual-band bandpass filter with independently controlled centre frequencies is presented. The DMS using an F-shaped spurline embedded into a uniform impedance resonator is applied to generate double-resonance characteristics. Based on this theory, a dual-band filter for GPS/WLAN applications has been designed, analysed and fabricated. It is compact and has easy fabrication. Measured results verify the validity of this design methodology. Also, this is believed to be the first report on the DMS in microwave dual-band filter design.

Keywords

Global Positioning System; band-pass filters; integrated circuit design; integrated circuit manufacture; microwave filters; microwave integrated circuits; wireless LAN; F-shaped spurline; GPS; Global Positioning System; WLAN; compact dual-band bandpass filter; defected microstrip structure; microwave dual-band filter design; uniform impedance resonator; wireless local area networks;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2010.2146

Filename

5604800