Compact coplanar waveguide bandpass filter based on coupled S-shaped split ring resonators
Karami-Horestani, Ali (University of Adelaide (Adelaide, Austràlia). School of Electrical & Electronic Engineering)
Durán-Sindreu, Miguel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Naqui Garolera, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Fumeaux, Cristophe (University of Adelaide (Adelaide, Austràlia). School of Electrical & Electronic Engineering)
Martín, Ferran, (Martín Antolín) (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)

Date:	2015
Abstract:	This letter is focused on the application of coupled single-layer S-shaped split ring resonators (S-SRRs) to the design of highly compact bandpass filters in coplanar waveguide (CPW) technology. S-SRRs have been previously demonstrated as miniaturized resonators, particularly suited for applications in conjunction with coplanar line geometries. However, size reduction of CPW filters based on impedance inverters and S-SRRs is limited by the inverters. Therefore, this letter proposes an alternative geometry of CPW bandpass filters employing S-SRRs in a configuration based on the theory of coupled resonators. A highly compact third-order bandpass filter is designed using this principle, and the proposed approach is validated through experiment, demonstrating competitive filter performance achieved in an extremely small area.
Grants:	Ministerio de Ciencia e Innovación TEC2010-17512 Ministerio de Ciencia e Innovación CSD2008-00066 Ministerio de Economía y Competitividad TEC2013-40600-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-157
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Split ring resonators ; Electromagnetic metamaterials ; Copla-nar waveguide ; Planar filter
Published in:	Microwave and optical technology letters, Vol. 57, No. 5 (May 2015) , p. 1113-1116, ISSN 0895-2477

DOI: 10.1002/mop.29029

Post-print 3 p, 2.4 MB

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