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Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna

We report on the design of a low-profile integrated millimeter-wave antenna for efficient and broadband circularly polarized electromagnetic radiation. The designed antenna comprises a chiral dielectric metasurface built with a [Formula: see text] arrangement of dielectric cylinders with slanted-slo...

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Autores principales: Ferreira-Gomes, Bruno, Oliveira, Osvaldo N., Mejía-Salazar, Jorge Ricardo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000959/
https://www.ncbi.nlm.nih.gov/pubmed/33809458
http://dx.doi.org/10.3390/s21062071
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author Ferreira-Gomes, Bruno
Oliveira, Osvaldo N.
Mejía-Salazar, Jorge Ricardo
author_facet Ferreira-Gomes, Bruno
Oliveira, Osvaldo N.
Mejía-Salazar, Jorge Ricardo
author_sort Ferreira-Gomes, Bruno
collection PubMed
description We report on the design of a low-profile integrated millimeter-wave antenna for efficient and broadband circularly polarized electromagnetic radiation. The designed antenna comprises a chiral dielectric metasurface built with a [Formula: see text] arrangement of dielectric cylinders with slanted-slots at the center. A broadbeam high-gain with wide axial ratio ([Formula: see text] dB bandwidth was reached by pairing the electric and magnetic resonances of the dielectric cylinders and the slanted slots when excited by an elliptically polarized driven-patch antenna. This electric-magnetic pairing can be tuned by varying the cylinders diameter and the tilting and rotation angles of the slanted slots. The simulation results indicate impedance-matching bandwidths up to 22.6% (25.3–31.6 GHz) with 3-dB AR bandwidths of 11.6% (26.9–30.2 GHz), which in terms of compactness ([Formula: see text]) and performance are superior to previous antenna designs. Since the simulations were performed by assuming materials and geometries easily implementable experimentally, it is hoped that circularly polarized antennas based on chiral metasurfaces can be integrated into 5G and satellite communications.
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spelling pubmed-80009592021-03-28 Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna Ferreira-Gomes, Bruno Oliveira, Osvaldo N. Mejía-Salazar, Jorge Ricardo Sensors (Basel) Communication We report on the design of a low-profile integrated millimeter-wave antenna for efficient and broadband circularly polarized electromagnetic radiation. The designed antenna comprises a chiral dielectric metasurface built with a [Formula: see text] arrangement of dielectric cylinders with slanted-slots at the center. A broadbeam high-gain with wide axial ratio ([Formula: see text] dB bandwidth was reached by pairing the electric and magnetic resonances of the dielectric cylinders and the slanted slots when excited by an elliptically polarized driven-patch antenna. This electric-magnetic pairing can be tuned by varying the cylinders diameter and the tilting and rotation angles of the slanted slots. The simulation results indicate impedance-matching bandwidths up to 22.6% (25.3–31.6 GHz) with 3-dB AR bandwidths of 11.6% (26.9–30.2 GHz), which in terms of compactness ([Formula: see text]) and performance are superior to previous antenna designs. Since the simulations were performed by assuming materials and geometries easily implementable experimentally, it is hoped that circularly polarized antennas based on chiral metasurfaces can be integrated into 5G and satellite communications. MDPI 2021-03-16 /pmc/articles/PMC8000959/ /pubmed/33809458 http://dx.doi.org/10.3390/s21062071 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Ferreira-Gomes, Bruno
Oliveira, Osvaldo N.
Mejía-Salazar, Jorge Ricardo
Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title_full Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title_fullStr Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title_full_unstemmed Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title_short Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna
title_sort chiral dielectric metasurfaces for highly integrated, broadband circularly polarized antenna
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000959/
https://www.ncbi.nlm.nih.gov/pubmed/33809458
http://dx.doi.org/10.3390/s21062071
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