Phase reversal technique applied to fishnet metalenses

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dc.contributor.authorPacheco-Peña, Víctor
dc.contributor.authorMinin, Igor V.
dc.contributor.authorMinin, Oleg V.
dc.contributor.authorBeruete Díaz, Miguel
dc.contributor.departmentIngeniaritza Elektrikoa eta Elektronikoaeu
dc.contributor.departmentInstitute of Smart Cities - ISCen
dc.contributor.departmentIngeniería Eléctrica y Electrónicaes_ES
dc.date.accessioned2018-08-27T10:25:50Z
dc.date.available2018-08-27T10:25:50Z
dc.date.issued2018
dc.description.abstractIn this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented in several metalenses at 55 GHz ( λ 0 = 5.45 m m ) with a short focal length of 1.5 λ 0 . Then, the phase reversal technique is applied to these metalenses by switching from a concave to a convex profile in order to change the phase distribution inside of them. The designs are evaluated both numerically and experimentally demonstrating that chromatic dispersion (the shift of the position of the focus at different frequencies) is reduced when using the phase-reversed profiles. It is shown how the position of the focus remains at the same location within a relatively broadband frequency range of ~4% around the design frequency without affecting the overall behaviour of the metalenses. The best performance is achieved with the design that combines both reference phase and phase reversal techniques, with an experimental position of the focus of 1.75 λ 0 , reduced side lobes, and a power enhancement of 6.5 dB. The metalenses designed here may find applications in situations where a wideband response and low side lobes are required because of the reduced chromatic aberrations of the focus.en
dc.description.sponsorshipThis work was partially supported by the Spanish Ministerio de Economía y Competitividad with European Union Fondo Europeo de Desarrollo Regional (FEDER) funds (TEC2014-51902-C2-2-R). Victor Pacheco-Peña is supported by Newcastle University (Newcastle University Research Fellow). Igor V. Minin and Oleg V. Minin were partially supported by the Mendeleev scientific fund of Tomsk State University.en
dc.format.mimetypeapplication/pdfen
dc.identifier.doi10.1155/2018/9461858
dc.identifier.issn1687-5869 (Print)
dc.identifier.issn1687-5877 (Electronic)
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/30268
dc.language.isoengen
dc.publisherHindawien
dc.relation.ispartofInternational of Antennas and Propagation, Volume 2018, Article ID 9461858, 8 pagesen
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO//TEC2014-51902-C2-2-R/ES/
dc.relation.publisherversionhttps://doi.org/10.1155/2018/9461858
dc.rights© 2018 Victor Pacheco-Peña et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectFishnet metalensesen
dc.subjectPhase reversal techniquesen
dc.titlePhase reversal technique applied to fishnet metalensesen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication7f0a4bcb-4ee3-4161-b562-8b0e0bfddd52
relation.isAuthorOfPublication6853cbd8-0a88-42ab-b165-c51b99cb6353
relation.isAuthorOfPublication.latestForDiscovery7f0a4bcb-4ee3-4161-b562-8b0e0bfddd52

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