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Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating

Wave modulating is one of the most interesting applications of metasurfaces. It requires an effective method to design metasurfaces with arbitrary space-variant phase. In this paper, we proposed an optimized design method for arbitrarily modulating wave based on the Genetic Algorithm, which is effic...

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Autores principales: Zhou, Yang, Zhang, Guori, Chen, Haiyan, Zhou, Peiheng, Wang, Xin, Zhang, Linbo, Zhang, Li, Xie, Jianliang, Deng, Longjiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5989211/
https://www.ncbi.nlm.nih.gov/pubmed/29875388
http://dx.doi.org/10.1038/s41598-018-26981-6
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author Zhou, Yang
Zhang, Guori
Chen, Haiyan
Zhou, Peiheng
Wang, Xin
Zhang, Linbo
Zhang, Li
Xie, Jianliang
Deng, Longjiang
author_facet Zhou, Yang
Zhang, Guori
Chen, Haiyan
Zhou, Peiheng
Wang, Xin
Zhang, Linbo
Zhang, Li
Xie, Jianliang
Deng, Longjiang
author_sort Zhou, Yang
collection PubMed
description Wave modulating is one of the most interesting applications of metasurfaces. It requires an effective method to design metasurfaces with arbitrary space-variant phase. In this paper, we proposed an optimized design method for arbitrarily modulating wave based on the Genetic Algorithm, which is efficient to optimize designated radiation patterns according to application requirements. In order to verify the availability of the method, wave modulating of single lobe radiation at 10 GHz and broadband 3-lobes radiation at X band are optimized. For wave modulating of single lobe radiation, eight basic codes are chosen to excite the specific phases evenly dispersed from 0 to 2π for smooth phase gradient, and the 8 × 8, 20 × 20 and 40 × 40 arrays of the basic codes are optimized. It proves that the wave modulation accuracy is enhancing with the increase of elements quantity. For wave modulating of 3-lobes radiation, the 20 × 20 arrays are proposed and optimized, and their basic codes are increased to 32 for meeting the broadband requirement. Its broadband wave modulating has been verified by simulation and experiment, and it is shown that the directional 3-lobes radiation patterns keeps nearly stable within the broadband frequency range of 8.7–11.3 GHz.
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spelling pubmed-59892112018-06-20 Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating Zhou, Yang Zhang, Guori Chen, Haiyan Zhou, Peiheng Wang, Xin Zhang, Linbo Zhang, Li Xie, Jianliang Deng, Longjiang Sci Rep Article Wave modulating is one of the most interesting applications of metasurfaces. It requires an effective method to design metasurfaces with arbitrary space-variant phase. In this paper, we proposed an optimized design method for arbitrarily modulating wave based on the Genetic Algorithm, which is efficient to optimize designated radiation patterns according to application requirements. In order to verify the availability of the method, wave modulating of single lobe radiation at 10 GHz and broadband 3-lobes radiation at X band are optimized. For wave modulating of single lobe radiation, eight basic codes are chosen to excite the specific phases evenly dispersed from 0 to 2π for smooth phase gradient, and the 8 × 8, 20 × 20 and 40 × 40 arrays of the basic codes are optimized. It proves that the wave modulation accuracy is enhancing with the increase of elements quantity. For wave modulating of 3-lobes radiation, the 20 × 20 arrays are proposed and optimized, and their basic codes are increased to 32 for meeting the broadband requirement. Its broadband wave modulating has been verified by simulation and experiment, and it is shown that the directional 3-lobes radiation patterns keeps nearly stable within the broadband frequency range of 8.7–11.3 GHz. Nature Publishing Group UK 2018-06-06 /pmc/articles/PMC5989211/ /pubmed/29875388 http://dx.doi.org/10.1038/s41598-018-26981-6 Text en © The Author(s) 2018 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhou, Yang
Zhang, Guori
Chen, Haiyan
Zhou, Peiheng
Wang, Xin
Zhang, Linbo
Zhang, Li
Xie, Jianliang
Deng, Longjiang
Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title_full Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title_fullStr Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title_full_unstemmed Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title_short Design of Phase Gradient Coding Metasurfaces for Broadband Wave Modulating
title_sort design of phase gradient coding metasurfaces for broadband wave modulating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5989211/
https://www.ncbi.nlm.nih.gov/pubmed/29875388
http://dx.doi.org/10.1038/s41598-018-26981-6
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