Effective negative-ϵ stopband microstrip lines based on complementary split ring resonators

Author

Falcone, Francisco ; Lopetegi, Txema ; Baena, Juan D. ; Marqués, Ricardo ; Martín, Ferran ; Sorolla, Mario

Author_Institution

Electr. Eng. Dept., Public Univ. of Navarre, Pamplona, Spain

Volume

14

Issue

6

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

280

Lastpage

282

Abstract

In this letter a super-compact stopband microstrip structure is proposed. The frequency gap is produced by an array of complementary split ring resonators (CSRRs)-a concept proposed here for the first time-etched on the ground plane. This behavior is interpreted as due to the presence of a negative effective dielectric permittivity in the vicinity of resonance. The resulting device produces a deep rejection frequency band with sharp cutoff, and a pass band that exhibits very low losses and good matching. Due to the sub-lambda operation of CSRRs, the electrical size of the device is very small.

Keywords

band-stop filters; microstrip lines; microstrip resonators; microwave filters; permittivity; complementary split ring resonators; deep rejection frequency band; electrical size; frequency gap; good matching design; low losses design; microstrip technology; microwave filters; negative effective dielectric permittivity; negative-ϵ stopband microstrip lines; sub-lambda operation; super-compact stopband microstrip; Band pass filters; Circuits; Frequency; Metamaterials; Microstrip resonators; Microwave devices; Microwave filters; Optical ring resonators; Periodic structures; Power harmonic filters; CSRRs; Complementary split ring resonators; duality; microstrip technology; microwave filters; negative-$varepsilon$; split ring resonators;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2004.828029

Filename

1303666