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3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view

Conventional planar frequency selective surfaces (FSSs) are characterized in the far-field region and they are sensitive to the incidence angle of impinging waves. In this paper, a spherical dome FSS is presented, aiming to provide improved angular stable bandpass filtering performance as compared t...

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Autores principales: Álvarez, H. Fernández, Cadman, Darren A., Goulas, Athanasios, de Cos Gómez, M. E., Engstrøm, Daniel S., Vardaxoglou, J. C., Zhang, Shiyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213748/
https://www.ncbi.nlm.nih.gov/pubmed/34145301
http://dx.doi.org/10.1038/s41598-021-91218-y
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author Álvarez, H. Fernández
Cadman, Darren A.
Goulas, Athanasios
de Cos Gómez, M. E.
Engstrøm, Daniel S.
Vardaxoglou, J. C.
Zhang, Shiyu
author_facet Álvarez, H. Fernández
Cadman, Darren A.
Goulas, Athanasios
de Cos Gómez, M. E.
Engstrøm, Daniel S.
Vardaxoglou, J. C.
Zhang, Shiyu
author_sort Álvarez, H. Fernández
collection PubMed
description Conventional planar frequency selective surfaces (FSSs) are characterized in the far-field region and they are sensitive to the incidence angle of impinging waves. In this paper, a spherical dome FSS is presented, aiming to provide improved angular stable bandpass filtering performance as compared to its planar counterpart when the FSS is placed in the near-field region of an antenna source. A comparison between the conformal FSS and a finite planar FSS is presented through simulations at the frequency range between 26 to 40 GHz in order to demonstrate the advantages of utilizing the conformal FSS in the near-field. The conformal FSS is 3D printed and copper electroplated, which leads to a low-cost and lightweight bandpass filter array. Placing it in the near-field region of a primary antenna can be used as radomes to realize compact high-performance mm-wave systems. The comparison between simulated and measured conformal FSS results is in good agreement. The challenges that arise when designing, manufacturing, and measuring this type of structure are reported and guidelines to overcome these are presented.
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spelling pubmed-82137482021-06-21 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view Álvarez, H. Fernández Cadman, Darren A. Goulas, Athanasios de Cos Gómez, M. E. Engstrøm, Daniel S. Vardaxoglou, J. C. Zhang, Shiyu Sci Rep Article Conventional planar frequency selective surfaces (FSSs) are characterized in the far-field region and they are sensitive to the incidence angle of impinging waves. In this paper, a spherical dome FSS is presented, aiming to provide improved angular stable bandpass filtering performance as compared to its planar counterpart when the FSS is placed in the near-field region of an antenna source. A comparison between the conformal FSS and a finite planar FSS is presented through simulations at the frequency range between 26 to 40 GHz in order to demonstrate the advantages of utilizing the conformal FSS in the near-field. The conformal FSS is 3D printed and copper electroplated, which leads to a low-cost and lightweight bandpass filter array. Placing it in the near-field region of a primary antenna can be used as radomes to realize compact high-performance mm-wave systems. The comparison between simulated and measured conformal FSS results is in good agreement. The challenges that arise when designing, manufacturing, and measuring this type of structure are reported and guidelines to overcome these are presented. Nature Publishing Group UK 2021-06-18 /pmc/articles/PMC8213748/ /pubmed/34145301 http://dx.doi.org/10.1038/s41598-021-91218-y Text en © The Author(s) 2021 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
Álvarez, H. Fernández
Cadman, Darren A.
Goulas, Athanasios
de Cos Gómez, M. E.
Engstrøm, Daniel S.
Vardaxoglou, J. C.
Zhang, Shiyu
3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title_full 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title_fullStr 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title_full_unstemmed 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title_short 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
title_sort 3d conformal bandpass millimeter-wave frequency selective surface with improved fields of view
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213748/
https://www.ncbi.nlm.nih.gov/pubmed/34145301
http://dx.doi.org/10.1038/s41598-021-91218-y
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