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Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications
This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9304595/ https://www.ncbi.nlm.nih.gov/pubmed/35874095 http://dx.doi.org/10.1016/j.isci.2022.104725 |
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author | Ali, Ali Khalily, Mohsen Brown, Tim Tafazolli, Rahim |
author_facet | Ali, Ali Khalily, Mohsen Brown, Tim Tafazolli, Rahim |
author_sort | Ali, Ali |
collection | PubMed |
description | This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via tilted OAM beams. That, in turn, requires reaching the maximal attainable angles either to send multiple beams to different receivers or to focus the OAM beams of different modes in a desired direction. For this reason, two concepts are addressed in this work: (i). generating a single 3D steered OAM beam and (ii) producing multiple off-centered OAM beams with different modes. A volumetric unit cell is adopted to be accurately tuned through the aperture to steer the generated beams towards the desired direction(s). The proposed paradigm can be utilized to produce RAs with beam-steering or OAM multiplexing capabilities as candidates for THz indoor communications. |
format | Online Article Text |
id | pubmed-9304595 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-93045952022-07-23 Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications Ali, Ali Khalily, Mohsen Brown, Tim Tafazolli, Rahim iScience Article This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via tilted OAM beams. That, in turn, requires reaching the maximal attainable angles either to send multiple beams to different receivers or to focus the OAM beams of different modes in a desired direction. For this reason, two concepts are addressed in this work: (i). generating a single 3D steered OAM beam and (ii) producing multiple off-centered OAM beams with different modes. A volumetric unit cell is adopted to be accurately tuned through the aperture to steer the generated beams towards the desired direction(s). The proposed paradigm can be utilized to produce RAs with beam-steering or OAM multiplexing capabilities as candidates for THz indoor communications. Elsevier 2022-07-02 /pmc/articles/PMC9304595/ /pubmed/35874095 http://dx.doi.org/10.1016/j.isci.2022.104725 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ali, Ali Khalily, Mohsen Brown, Tim Tafazolli, Rahim Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title_full | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title_fullStr | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title_full_unstemmed | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title_short | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
title_sort | metasurface-based thz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9304595/ https://www.ncbi.nlm.nih.gov/pubmed/35874095 http://dx.doi.org/10.1016/j.isci.2022.104725 |
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