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acessibilidade

http://hdl.handle.net/10071/6167
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acessibilidade
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dc.contributor.authorSilveirinha, Mário G.-
dc.contributor.authorFernandes, Carlos A.-
dc.contributor.authorCosta, Jorge R.-
dc.date.accessioned2014-01-13T15:36:07Z-
dc.date.available2014-01-13T15:36:07Z-
dc.date.issued2008-02-
dc.identifier.issn0018-926Xpor
dc.identifier.urihttp://hdl.handle.net/10071/6167-
dc.descriptionWOS:000253086900014 (Nº de Acesso Web of Science)-
dc.description.abstractWe develop a homogenization model to characterize textured surfaces formed by a periodic arrangement of thin metallic pins attached to a conducting ground plane: the ldquoFakir's bed of nailsrdquo substrate. It is demonstrated that the textured surface can be accurately modeled using a dielectric function, provided spatial dispersion effects are considered as well as additional boundary conditions. We derive closed analytical formulas for the reflection coefficient, and for the dispersion characteristic of the surfaces waves. In addition, it is demonstrated that the artificial substrate may mimic almost exactly the behavior of an ideal impedance surface boundary, and that the only physical factor that may limit this remarkable property is the skin depth of the metal. The reported results are supported by full wave simulations as well as by experimental data.por
dc.language.isoengpor
dc.publisherIEEEpor
dc.rightsopenAccesspor
dc.subjectAdditional boundary conditions (ABC)por
dc.subjectHigh impedance surfacespor
dc.subjectMetamaterialspor
dc.subjectSurface impedancepor
dc.subjectWire mediapor
dc.titleElectromagnetic characterization of textured surfaces formed by metallic pinspor
dc.typearticle-
dc.pagination405-415por
dc.publicationstatusPublicadopor
dc.peerreviewedSimpor
dc.relation.publisherversionThe definitive version is available at: http://dx.doi.org/10.1109/TAP.2007.915442por
dc.journalIEEE Transactions on Antennas and Propagationpor
dc.distributionInternacionalpor
dc.volume56por
dc.number2por
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica
IT-RI - Artigo em revista internacional com arbitragem científica

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