H-plane horn antenna with enhanced directivity using conformal transformation optics

Conformal transformation optics is employed to enhance an H-plane horn’s directivity by designing a graded-index all-dielectric lens. The transformation is applied so that the phase error at the aperture is gradually eliminated inside the lens, leading to a low-profile high-gain lens antenna. The ph...

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Detalles Bibliográficos
Autores principales: Eskandari, Hossein, Albadalejo-Lijarcio, Juan Luis, Zetterstrom, Oskar, Tyc, Tomáš, Quevedo-Teruel, Oscar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8275783/
https://www.ncbi.nlm.nih.gov/pubmed/34253802
http://dx.doi.org/10.1038/s41598-021-93812-6
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author Eskandari, Hossein
Albadalejo-Lijarcio, Juan Luis
Zetterstrom, Oskar
Tyc, Tomáš
Quevedo-Teruel, Oscar
author_facet Eskandari, Hossein
Albadalejo-Lijarcio, Juan Luis
Zetterstrom, Oskar
Tyc, Tomáš
Quevedo-Teruel, Oscar
author_sort Eskandari, Hossein
collection PubMed
description Conformal transformation optics is employed to enhance an H-plane horn’s directivity by designing a graded-index all-dielectric lens. The transformation is applied so that the phase error at the aperture is gradually eliminated inside the lens, leading to a low-profile high-gain lens antenna. The physical space shape is modified such that singular index values are avoided, and the optical path inside the lens is rescaled to eliminate superluminal regions. A prototype of the lens is fabricated using three-dimensional printing. The measurement results show that the realized gain of an H-plane horn antenna can be improved by 1.5–2.4 dB compared to a reference H-plane horn.
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spelling pubmed-82757832021-07-13 H-plane horn antenna with enhanced directivity using conformal transformation optics Eskandari, Hossein Albadalejo-Lijarcio, Juan Luis Zetterstrom, Oskar Tyc, Tomáš Quevedo-Teruel, Oscar Sci Rep Article Conformal transformation optics is employed to enhance an H-plane horn’s directivity by designing a graded-index all-dielectric lens. The transformation is applied so that the phase error at the aperture is gradually eliminated inside the lens, leading to a low-profile high-gain lens antenna. The physical space shape is modified such that singular index values are avoided, and the optical path inside the lens is rescaled to eliminate superluminal regions. A prototype of the lens is fabricated using three-dimensional printing. The measurement results show that the realized gain of an H-plane horn antenna can be improved by 1.5–2.4 dB compared to a reference H-plane horn. Nature Publishing Group UK 2021-07-12 /pmc/articles/PMC8275783/ /pubmed/34253802 http://dx.doi.org/10.1038/s41598-021-93812-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis 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
Eskandari, Hossein
Albadalejo-Lijarcio, Juan Luis
Zetterstrom, Oskar
Tyc, Tomáš
Quevedo-Teruel, Oscar
H-plane horn antenna with enhanced directivity using conformal transformation optics
title H-plane horn antenna with enhanced directivity using conformal transformation optics
title_full H-plane horn antenna with enhanced directivity using conformal transformation optics
title_fullStr H-plane horn antenna with enhanced directivity using conformal transformation optics
title_full_unstemmed H-plane horn antenna with enhanced directivity using conformal transformation optics
title_short H-plane horn antenna with enhanced directivity using conformal transformation optics
title_sort h-plane horn antenna with enhanced directivity using conformal transformation optics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8275783/
https://www.ncbi.nlm.nih.gov/pubmed/34253802
http://dx.doi.org/10.1038/s41598-021-93812-6
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