Compact Dual-Mode Wideband Filter Based on Complementary Split-Ring Resonator

Author

Ebrahimi, Amir ; Withayachumnankul, Withawat ; Al-Sarawi, Said F. ; Abbott, Derek

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Adelaide, Adelaide, SA, Australia

Volume

24

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

152

Lastpage

154

Abstract

This letter proposes a microstrip filter based on a dual-mode complementary split-ring resonator (DMCSRR). For the input/output coupling, a dual C-shaped feed structure is implemented together with the DMCSRR to acheive a wideband response. The resonator offers a wide fractional bandwidth of 62% at the central frequency of 2.23 GHz and a very compact structure with a footprint of 0.0625λ_g×0.18λ_g, where λ_g is the guided wavelength at the midband frequency. A comprehensive lumped element circuit analysis accompanies the simulation and measurement results.

Keywords

UHF filters; UHF resonators; microstrip filters; resonator filters; DMCSRR; compact dual-mode wideband filter; comprehensive lumped element circuit analysis; dual C-shaped feed structure; dual-mode complementary split-ring resonator; frequency 2.23 GHz; guided wavelength; input-output coupling; microstrip filter; midband frequency; wideband response; Couplings; Equivalent circuits; Integrated circuit modeling; Microstrip; Wideband; Wireless communication; Compact filter; complementary split-ring resonator (CSRR); dual-mode filter; wideband filter;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2291869

Filename

6681941