Annular apertures in metallic screens as extraordinary transmission and frequency selective surface structures
Fecha
2017Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
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10.1109/TMTT.2017.2732985
Resumen
A 2-D periodic array of annular apertures (or ring slots) is studied using an accurate circuit model. The model accounts for distributed and dynamic effects associated with the excitation of high-order modes operating above or below cutoff but not far from their cutoff frequencies. This paper allows to ascertain the substantial differences of the underlying physics when this structure operates as ...
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A 2-D periodic array of annular apertures (or ring slots) is studied using an accurate circuit model. The model accounts for distributed and dynamic effects associated with the excitation of high-order modes operating above or below cutoff but not far from their cutoff frequencies. This paper allows to ascertain the substantial differences of the underlying physics when this structure operates as a classical frequency selective surface or in the extraordinary-transmission (ET) regime. A discussion of two different designs working at each regime is provided by means of the equivalent circuit approach (ECA), full wave simulation results, and experimental characterization. The agreement between the equivalent circuit calculation applied here and the simulation and experimental results is very good in all the considered cases. This validates the ECA as an efficient minimal-order model and a low computational-cost design tool for frequency selective surfaces and ET-based devices. Additional scenarios such as oblique incidence and parametric studies of the structural geometry are also considered. [--]
Materias
Annular aperture,
Equivalent circuit,
Extraordinary transmission (ET),
Frequency selective surfaces (FSSs),
Millimeter waves,
Ring slot
Editor
IEEE
Publicado en
IEEE Transactions on Microwave Theory and Techniques, Vol. 65, n. 12, December 2017
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work was supported in part by the Spanish Ministerio
de Economía y Competitividad with the European Union FEDER funds
under Project TEC2013-41913-P and Project TEC2014-51902-C2-2-R and in
part by the Spanish Junta de Andalucía under Project P12-TIC-1435. The
work of P. Rodríguez-Ulibarri was supported by the Universidad Pública
de Navarra under a Pre-Doctoral Scholarship. The work of M. Navarro Cía
was supported by the University of Birmingham under the Birmingham
Fellowship