Design of miniaturized narrowband absorbers based on resonant-magnetic inclusions

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buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage72en_US
dc.citation.issueNumber1en_US
dc.citation.spage63en_US
dc.citation.volumeNumber53en_US
dc.contributor.authorBilotti, F.en_US
dc.contributor.authorToscano, A.en_US
dc.contributor.authorAlici, K. B.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.contributor.authorVegni, L.en_US
dc.date.accessioned2015-07-28T12:05:44Z
dc.date.available2015-07-28T12:05:44Z
dc.date.issued2011-06-21en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractIn this paper, we present the design of miniaturized narrowband-microwave absorbers based on different kinds of magnetic inclusions. The operation of the proposed components originates from the resonance of a planar array of inclusions excited by an incoming wave with a given polarization. As in common absorber layouts, a 377 Omega resistive sheet is also used to absorb the electromagnetic energy of the impinging field. Since the planar array of magnetic inclusions behaves at its resonance as a perfect magnetic conductor, the resistive sheet is placed in close proximity of the resonating inclusions, without perturbing their resonance condition. In contrast to other typical absorber configurations presented in the literature, the absorber proposed in this paper is not backed by a metallic plate. This feature may be useful for stealth applications, as discussed thoroughly in the paper. The other interesting characteristic of the proposed absorbers is the subwavelength thickness, which has shown to depend only on the geometry of the basic resonant inclusions employed. At first, regular split-ring resonators (SSRs) disposed in an array configuration are considered and some application examples are presented. Absorbers based on SRRs are shown to reach thickness of the order of lambda(0)/20. In order to further squeeze the electrical thickness of the absorbers, multiple SRRs and spiral resonators are also used. The employment of such inclusions leads to the design of extremely thin microwave absorbers, whose thickness may even be close to lambda(0)/100. Finally, some examples of miniaturized absorbers suitable for a practical realization are proposed.en_US
dc.identifier.doi10.1109/TEMC.2010.2051229en_US
dc.identifier.issn0018-9375
dc.identifier.urihttp://hdl.handle.net/11693/13325
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TEMC.2010.2051229en_US
dc.source.titleIEEE Transactions on Electromagnetic Compatibilityen_US
dc.subjectMetamaterialsen_US
dc.subjectMicrowave Absorbersen_US
dc.subjectMiniaturized Magnetic Inclusionsen_US
dc.subjectSplit-ring Resonatorsen_US
dc.titleDesign of miniaturized narrowband absorbers based on resonant-magnetic inclusionsen_US
dc.typeArticleen_US

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