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Terahertz carpet cloak based on a ring resonator metasurface

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dc.contributor.authorOrazbayev, Bakhtiyar
dc.contributor.authorMohammadi Estakhri, Nasimes_ES
dc.contributor.authorBeruete Díaz, Miguel
dc.contributor.authorAlù, Andreaes_ES
dc.contributor.departmentIngeniería Eléctrica y Electrónicaes_ES
dc.contributor.departmentIngeniaritza Elektrikoa eta Elektronikoaeu
dc.date.accessioned2020-09-16T11:21:49Z
dc.date.available2020-09-16T11:21:49Z
dc.date.issued2015
dc.description.abstractIn this work we present the concept and design of an ultrathin (λ/22) terahertz (THz) unidirectional carpet cloak based on the local phase compensation approach enabled by gradient metasurfaces. A triangular surface bump with center height of 4.1 mm (1.1λ) and tilt angle of 20° is covered with a metasurface composed of an array of suitably designed closed ring resonators with a transverse gradient of surface impedance. The ring resonators provide a wide range of control for the reflection phase with small absorption losses, enabling efficient phase manipulation along the edge of the bump. Our numerical results demonstrate a good performance of the designed cloak in both near field and far field, and the cloaked object mimics a flat ground plane within a broad range of incidence angles, over 35° angular spectrum centered at 45°. The presented cloak design can be applied in radar and antenna systems as a thin, lightweight, and easy to fabricate solution for radio and THz frequencies.en
dc.description.sponsorshipThis work was supported in part by the Spanish Government under Contract Consolider Engineering Metamaterials CSD2008-00066 and Contract TEC2011-28664-C02-01. B.O. is sponsored by the Spanish Ministerio de Economía y Competitividad under Grant No. FPI BES-2012-054909. M.B. is sponsored by the Spanish Government via RYC-2011-08221. N.M.E. and A.A. have been supported by the NSF CAREER Award No. ECCS-0953311 and the AFOSR Grant No. FA9550-13-1-0204.en
dc.format.extent5 p.
dc.format.mimetypeapplication/pdfen
dc.identifier.doi10.1103/PhysRevB.91.195444
dc.identifier.issn2469-9969
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/38134
dc.language.isoengen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofPhysical Review B, 2015, 91, 195444en
dc.relation.projectIDinfo:eu-repo/grantAgreement/MICINN//TEC2011-28664-C02-01/ES/en
dc.relation.publisherversionhttps://doi.org/10.1103/PhysRevB.91.195444
dc.rights© 2015 American Physical Societyen
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.subjectTerahertz carpet cloaken
dc.subjectRing resonatorsen
dc.subjectRadarsen
dc.subjectAntennasen
dc.titleTerahertz carpet cloak based on a ring resonator metasurfaceen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dspace.entity.typePublication
relation.isAuthorOfPublication051a3d82-bb16-4480-99aa-1025dc0cc698
relation.isAuthorOfPublication6853cbd8-0a88-42ab-b165-c51b99cb6353
relation.isAuthorOfPublication.latestForDiscovery051a3d82-bb16-4480-99aa-1025dc0cc698

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