Super compact split ring resonators CPW band pass filters

Author

Bonache, J. ; Martin, F. ; Falcone, F. ; Garcia, J. ; Gil, Iñigo ; Lopetegi, T. ; Laso, M.A.G. ; Marqués, R. ; Medina, F. ; Sorolla, M.

Author_Institution

Departament d´´Enginyeria Electronica, Univ. Autonoma de Barcelona, Bellaterra, Spain

Volume

3

fYear

2004

fDate

6-11 June 2004

Firstpage

1483

Abstract

Coplanar waveguide (CPW) band pass filters consisting on signal-to-ground wire connections alternating with series gaps, and split ring resonators (SRRs) etched in the back substrate slide, underneath the slots, are presented for the first time. It is demonstrated that by properly tuning SRR dimensions, a narrow pass band below the cutoff frequency of the wired/gaped CPW structure can be obtained. The relevant characteristics of the designed structure are: insertion losses below 4 dBs in the allowed band, out of band rejection above 30 dBs, and very high transition slopes with only three SRR stages. Due to subwavelength operation of SRRs, the proposed structures are very compact with potential application to the fabrication of planar filters for future communication transceivers.

Keywords

band-pass filters; coplanar waveguides; microwave filters; resonators; CPW technology; SRR dimension tuning; band pass filters; communication transceiver; coplanar waveguide; cutoff frequency; gaped structure; insertion loss; metamaterials; microwave filters; out of band rejection; pass band; planar filter fabrication; series gap; signal-to-ground wire connections; split ring resonators; substrate slide; subwavelength operation; transition slope; wired structure; Band pass filters; Coplanar waveguides; Cutoff frequency; Etching; Fabrication; Insertion loss; Optical ring resonators; Tuning; Waveguide discontinuities; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1338854

Filename

1338854