Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes

This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures present an unexpected high degree of isotropy...

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Autores: Alex Amor, Antonio, Valerio, Guido, Ghasemifard, Fatemeh, Mesa Ledesma, Francisco Luis, Padilla, Pablo, Fernández González, José M., Quevedo Teruel, Óscar
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/97796
Acceso en línea:https://hdl.handle.net/11441/97796
https://doi.org/10.3390/app10051600
Access Level:acceso abierto
Palabra clave:Metasurfaces
Periodic structures
Equilateral triangular holes
Mode-matching
Dispersion analysis
Glide symmetry
Mirror symmetry
Isotropy
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spelling Wave Propagation in Periodic Metallic Structures with Equilateral Triangular HolesAlex Amor, AntonioValerio, GuidoGhasemifard, FatemehMesa Ledesma, Francisco LuisPadilla, PabloFernández González, José M.Quevedo Teruel, ÓscarMetasurfacesPeriodic structuresEquilateral triangular holesMode-matchingDispersion analysisGlide symmetryMirror symmetryIsotropyThis paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures present an unexpected high degree of isotropy, despite the triangle not being symmetric with respect to rotations of 90 . We give some physical insight on the matter by carrying out a modal decomposition of the total field on the hole and identifying the most significant modes. Additionally, we demonstrate that the electrical size of the triangular hole plays a fundamental role in the physical mechanism that causes that isotropic behavior. Finally, we characterize the influence of the different geometrical parameters that conform the unit cell (period, triangle size, hole depth, separation between metallic plates). The glide-symmetric configuration offers higher equivalent refractive indexes and widens the stopband compared to the mirror-symmetric configuration. We show that the stopband is wider as the triangle size is bigger, unlike holey structures composed of circular and elliptical holes where an optimal hole size exists.Ministerio de Ciencia, Innovación y Universidades TIN2016-75097-PEuropean Union TEC2017-84724-PEuropean Union TEC2017-85529-C3-1-RFrench National Research Agency ANR-16-CE24-0030MDPIFísica Aplicada ITIC112: MicroondasMinisterio de Ciencia, Innovación y Universidades (MICINN). EspañaEuropean Union (UE)European Union (UE)French National Research Agency2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/97796https://doi.org/10.3390/app10051600reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésApplied Sciences, 10 (5)TIN2016-75097-PTEC2017-84724-PTEC2017-85529-C3-1-RANR-16-CE24-0030https://www.mdpi.com/2076-3417/10/5/1600info:eu-repo/semantics/openAccessoai:idus.us.es:11441/977962026-06-17T12:51:07Z
dc.title.none.fl_str_mv Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
title Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
spellingShingle Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
Alex Amor, Antonio
Metasurfaces
Periodic structures
Equilateral triangular holes
Mode-matching
Dispersion analysis
Glide symmetry
Mirror symmetry
Isotropy
title_short Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
title_full Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
title_fullStr Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
title_full_unstemmed Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
title_sort Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
dc.creator.none.fl_str_mv Alex Amor, Antonio
Valerio, Guido
Ghasemifard, Fatemeh
Mesa Ledesma, Francisco Luis
Padilla, Pablo
Fernández González, José M.
Quevedo Teruel, Óscar
author Alex Amor, Antonio
author_facet Alex Amor, Antonio
Valerio, Guido
Ghasemifard, Fatemeh
Mesa Ledesma, Francisco Luis
Padilla, Pablo
Fernández González, José M.
Quevedo Teruel, Óscar
author_role author
author2 Valerio, Guido
Ghasemifard, Fatemeh
Mesa Ledesma, Francisco Luis
Padilla, Pablo
Fernández González, José M.
Quevedo Teruel, Óscar
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Aplicada I
TIC112: Microondas
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
European Union (UE)
European Union (UE)
French National Research Agency
dc.subject.none.fl_str_mv Metasurfaces
Periodic structures
Equilateral triangular holes
Mode-matching
Dispersion analysis
Glide symmetry
Mirror symmetry
Isotropy
topic Metasurfaces
Periodic structures
Equilateral triangular holes
Mode-matching
Dispersion analysis
Glide symmetry
Mirror symmetry
Isotropy
description This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures present an unexpected high degree of isotropy, despite the triangle not being symmetric with respect to rotations of 90 . We give some physical insight on the matter by carrying out a modal decomposition of the total field on the hole and identifying the most significant modes. Additionally, we demonstrate that the electrical size of the triangular hole plays a fundamental role in the physical mechanism that causes that isotropic behavior. Finally, we characterize the influence of the different geometrical parameters that conform the unit cell (period, triangle size, hole depth, separation between metallic plates). The glide-symmetric configuration offers higher equivalent refractive indexes and widens the stopband compared to the mirror-symmetric configuration. We show that the stopband is wider as the triangle size is bigger, unlike holey structures composed of circular and elliptical holes where an optimal hole size exists.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/97796
https://doi.org/10.3390/app10051600
url https://hdl.handle.net/11441/97796
https://doi.org/10.3390/app10051600
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Applied Sciences, 10 (5)
TIN2016-75097-P
TEC2017-84724-P
TEC2017-85529-C3-1-R
ANR-16-CE24-0030
https://www.mdpi.com/2076-3417/10/5/1600
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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