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Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations
In this paper, a novel planar and wideband metal-only retroreflector is proposed that efficiently reflects the obliquely incident electromagnetic wave along its incident direction in omnidirectional angle range. The means of omnidirectional is the capability of retroreflectivity in all azimuth angle...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9253136/ https://www.ncbi.nlm.nih.gov/pubmed/35787670 http://dx.doi.org/10.1038/s41598-022-15540-9 |
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author | Pesarakloo, Ali Khalaj-amirhosseini, Mohammad |
author_facet | Pesarakloo, Ali Khalaj-amirhosseini, Mohammad |
author_sort | Pesarakloo, Ali |
collection | PubMed |
description | In this paper, a novel planar and wideband metal-only retroreflector is proposed that efficiently reflects the obliquely incident electromagnetic wave along its incident direction in omnidirectional angle range. The means of omnidirectional is the capability of retroreflectivity in all azimuth angles [Formula: see text] and in a wide elevation angle [Formula: see text] range. The proposed structure consists of a symmetrical transmitarray structure with beam scanning capability in which a metal plate is placed instead of the feed. The transmitarray is designed by using the generalized multifocal approach in which the beam scanning capability is possible via feed displacement and the phase of the elements has azimuthal symmetry that causes omnidirectional property. Now by placing a metal plate at the location of feed displacement and provided that the focused waves are nearly perpendicular to the metal plate, the plane wave is reflected back along its incident direction i.e. the retroreflectivity property is obtained. The proposed retroreflector simulated by CST STUDIO software and fabricated with laser cut technology. The results of measurement show an omnidirectional retroreflectivity with half-power (3-dB RCS level) elevation field of view of 60° (− 30° to 30°) in the frequency range of 8.5–10 GHz (approximately 17%) for both TE and TM polarization. |
format | Online Article Text |
id | pubmed-9253136 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-92531362022-07-06 Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations Pesarakloo, Ali Khalaj-amirhosseini, Mohammad Sci Rep Article In this paper, a novel planar and wideband metal-only retroreflector is proposed that efficiently reflects the obliquely incident electromagnetic wave along its incident direction in omnidirectional angle range. The means of omnidirectional is the capability of retroreflectivity in all azimuth angles [Formula: see text] and in a wide elevation angle [Formula: see text] range. The proposed structure consists of a symmetrical transmitarray structure with beam scanning capability in which a metal plate is placed instead of the feed. The transmitarray is designed by using the generalized multifocal approach in which the beam scanning capability is possible via feed displacement and the phase of the elements has azimuthal symmetry that causes omnidirectional property. Now by placing a metal plate at the location of feed displacement and provided that the focused waves are nearly perpendicular to the metal plate, the plane wave is reflected back along its incident direction i.e. the retroreflectivity property is obtained. The proposed retroreflector simulated by CST STUDIO software and fabricated with laser cut technology. The results of measurement show an omnidirectional retroreflectivity with half-power (3-dB RCS level) elevation field of view of 60° (− 30° to 30°) in the frequency range of 8.5–10 GHz (approximately 17%) for both TE and TM polarization. Nature Publishing Group UK 2022-07-04 /pmc/articles/PMC9253136/ /pubmed/35787670 http://dx.doi.org/10.1038/s41598-022-15540-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Pesarakloo, Ali Khalaj-amirhosseini, Mohammad Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title | Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title_full | Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title_fullStr | Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title_full_unstemmed | Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title_short | Planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for TE and TM polarizations |
title_sort | planar, wide-band omnidirectional retroreflector using metal-only transmitarray structure for te and tm polarizations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9253136/ https://www.ncbi.nlm.nih.gov/pubmed/35787670 http://dx.doi.org/10.1038/s41598-022-15540-9 |
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