Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/91263
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Type: Journal article
Title: Coplanar waveguides loaded with s-shaped split-ring resonators: modeling and application to compact microwave filters
Author: Horestani, A.
Duran-Sindreu, M.
Naqui, J.
Fumeaux, C.
Martin, F.
Citation: IEEE Antennas and Wireless Propagation Letters, 2014; 13:1349-1352
Publisher: Institute of Electrical and Electronics Engineers
Issue Date: 2014
ISSN: 1536-1225
1548-5757
Statement of
Responsibility: 
Ali K. Horestani, Miguel Durán-Sindreu, Jordi Naqui, Christopher Fumeaux, and Ferran Martin
Abstract: This letter studies the transmission characteristics of coplanar waveguides (CPWs) loaded with single-layer S-shaped split-ring resonators (S-SRRs) for the first time. Two structures are analyzed: 1) a CPW simply loaded with an S-SRR, and 2) a CPW loaded with an S-SRR and a series gap. The former exhibits a stopband functionality related to the resonance of the S-SRR excited by the contra-directional magnetic fluxes through the two connected resonator loops; the latter is useful for the implementation of compact bandpass filters. In both cases, a lumped-element equivalent circuit model is proposed with an unequivocal physical interpretation of the circuit elements. These circuits are then validated by comparing the circuit response with extracted parameters to full-wave electromagnetic simulations. The last part of the letter illustrates application of the S-SRR/gap-loaded CPW unit cell to the design of a bandpass filter. The resulting filter is very compact and exhibits competitive performance.
Keywords: Coplanar waveguide (CPW); electromagnetic metamaterials; planar filters; split-ring resonators (SRRs)
Rights: © 2014 IEEE
DOI: 10.1109/LAWP.2014.2337913
Grant ID: http://purl.org/au-research/grants/arc/DP120100661
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Electrical and Electronic Engineering publications

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