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

Abstract 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 c...

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Autores principales:	H. Fernández Álvarez, Darren A. Cadman, Athanasios Goulas, M. E. de Cos Gómez, Daniel S. Engstrøm, J. C. Vardaxoglou, Shiyu Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f30b879c33f841b5ac215b86c3e48cd7
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spelling	oai:doaj.org-article:f30b879c33f841b5ac215b86c3e48cd72021-12-02T17:40:45Z3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view10.1038/s41598-021-91218-y2045-2322https://doaj.org/article/f30b879c33f841b5ac215b86c3e48cd72021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91218-yhttps://doaj.org/toc/2045-2322Abstract 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.H. Fernández ÁlvarezDarren A. CadmanAthanasios GoulasM. E. de Cos GómezDaniel S. EngstrømJ. C. VardaxoglouShiyu ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q H. Fernández Álvarez Darren A. Cadman Athanasios Goulas M. E. de Cos Gómez Daniel S. Engstrøm J. C. Vardaxoglou Shiyu Zhang 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view
description	Abstract 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.
format	article
author	H. Fernández Álvarez Darren A. Cadman Athanasios Goulas M. E. de Cos Gómez Daniel S. Engstrøm J. C. Vardaxoglou Shiyu Zhang
author_facet	H. Fernández Álvarez Darren A. Cadman Athanasios Goulas M. E. de Cos Gómez Daniel S. Engstrøm J. C. Vardaxoglou Shiyu Zhang
author_sort	H. Fernández Álvarez
title	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_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_sort	3d conformal bandpass millimeter-wave frequency selective surface with improved fields of view
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f30b879c33f841b5ac215b86c3e48cd7
work_keys_str_mv	AT hfernandezalvarez 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT darrenacadman 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT athanasiosgoulas 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT medecosgomez 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT danielsengstrøm 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT jcvardaxoglou 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview AT shiyuzhang 3dconformalbandpassmillimeterwavefrequencyselectivesurfacewithimprovedfieldsofview
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3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view

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