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Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens
dc.creator | Orazbayev, Bakhtiyar | es_ES |
dc.creator | Pacheco-Peña, Víctor | es_ES |
dc.creator | Beruete Díaz, Miguel | es_ES |
dc.creator | Navarro Cía, Miguel | es_ES |
dc.date.accessioned | 2019-01-21T13:24:50Z | |
dc.date.available | 2019-01-21T13:24:50Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 1094-4087 (Electronic) | |
dc.identifier.uri | https://hdl.handle.net/2454/32042 | |
dc.description.abstract | Metamaterial lenses with close values of permittivity and permeability usually display low reflection losses at the expense of narrow single frequency operation. Here, a broadband low-profile lens is designed by exploiting the dispersion of a fishnet metamaterial together with the zoning technique. The lens operates in a broadband regime from 54 GHz to 58 GHz, representing a fractional bandwidth ~7%, and outperforms Silicon lenses between 54 and 55.5 GHz. This broadband operation is demonstrated by a systematic analysis comprising Huygens-Fresnel analytical method, full-wave numerical simulations and experimental measurements at millimeter waves. For demonstrative purposes, a detailed study of the lens operation at two frequencies is done for the most important lens parameters (focal length, depth of focus, resolution, radiation diagram). Experimental results demonstrate diffraction-limited ~0.5λ transverse resolution, in agreement with analytical and numerical calculations. In a lens antenna configuration, a directivity as high as 16.6 dBi is achieved. The different focal lengths implemented into a single lens could be potentially used for realizing the front end of a non-mechanical zoom millimeter-wave imaging system. | en |
dc.description.sponsorship | This work was supported in part by the Spanish Government under contract Consolider Engineering Metamaterials CDS2008-00066 and contract TEC2011-28664-C02-01. B. O. is sponsored by Spanish Ministerio de Economía y Competitividad under grant FPI BES-2012-054909. V.P.-P. is sponsored by Spanish Ministerio de Educación, Cultura y Deporte under grant FPU AP-2012-3796. M. B. is sponsored by the Spanish Government via RYC-2011-08221. M. N.-C. is supported by the Imperial College Junior Research Fellowship. | en |
dc.format.extent | 10 p. | |
dc.format.mimetype | application/pdf | en |
dc.language.iso | eng | en |
dc.publisher | Optical Society of America | en |
dc.relation.ispartof | Optics Express, Vol. 23, Issue 7, pp. 8555-8564 (2015) | en |
dc.rights | © 2015 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. | en |
dc.subject | Low-profile lenses | en |
dc.subject | Fishnet metamaterials | en |
dc.title | Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens | en |
dc.type | info:eu-repo/semantics/article | en |
dc.type | Artículo / Artikulua | es |
dc.contributor.department | Ingeniería Eléctrica y Electrónica | es_ES |
dc.contributor.department | Ingeniaritza Elektrikoa eta Elektronikoa | eu |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | en |
dc.rights.accessRights | Acceso abierto / Sarbide irekia | es |
dc.identifier.doi | 10.1364/oe.23.008555 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//TEC2011-28664-C02-01/ES/ | en |
dc.relation.publisherversion | https://doi.org/10.1364/oe.23.008555 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | en |
dc.type.version | Versión publicada / Argitaratu den bertsioa | es |