Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms

Abstract In this paper, a broadband and tunable radar cross section (RCS) reduction structure is proposed by using the hybrid physical mechanism that is based on high-order reflections and Salisbury-type absorption. Our design combines the high-index grating structure with a traditional Salisbury sc...

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Autores principales:	Jiakun Song, Xiaoyu Wu, Cheng Huang, Jianing Yang, Chen Ji, Changlei Zhang, Xiangang Luo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a745d9c7ffd645009371f0ac19f90b6a
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spelling	oai:doaj.org-article:a745d9c7ffd645009371f0ac19f90b6a2021-12-02T15:09:33ZBroadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms10.1038/s41598-019-45501-82045-2322https://doaj.org/article/a745d9c7ffd645009371f0ac19f90b6a2019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-45501-8https://doaj.org/toc/2045-2322Abstract In this paper, a broadband and tunable radar cross section (RCS) reduction structure is proposed by using the hybrid physical mechanism that is based on high-order reflections and Salisbury-type absorption. Our design combines the high-index grating structure with a traditional Salisbury screen in which the lossy sheet is made of a graphene structure. When it is illuminated by a plane wave with normal incidence, the Salisbury screen can absorb the incoming wave, and the introducing high-index grating structure could further reduce the backward scattering wave by generating high-order reflection beams, which broadens the RCS reduction bandwidth. In addition, the RCS reduction level can be dynamically controlled by tuning the surface resistance of the graphene layer. Simulated results show that the proposed structure can realize tunable RCS reduction between 4.1 and 18 GHz under normal incidence with different graphene resistances. Experimental results are in accordance with those of the simulation results. In addition, the scattering field distributions and the plots of surface power loss density have been illustrated to analyze the RCS-reduction mechanism of our structure.Jiakun SongXiaoyu WuCheng HuangJianing YangChen JiChanglei ZhangXiangang LuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiakun Song Xiaoyu Wu Cheng Huang Jianing Yang Chen Ji Changlei Zhang Xiangang Luo Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
description	Abstract In this paper, a broadband and tunable radar cross section (RCS) reduction structure is proposed by using the hybrid physical mechanism that is based on high-order reflections and Salisbury-type absorption. Our design combines the high-index grating structure with a traditional Salisbury screen in which the lossy sheet is made of a graphene structure. When it is illuminated by a plane wave with normal incidence, the Salisbury screen can absorb the incoming wave, and the introducing high-index grating structure could further reduce the backward scattering wave by generating high-order reflection beams, which broadens the RCS reduction bandwidth. In addition, the RCS reduction level can be dynamically controlled by tuning the surface resistance of the graphene layer. Simulated results show that the proposed structure can realize tunable RCS reduction between 4.1 and 18 GHz under normal incidence with different graphene resistances. Experimental results are in accordance with those of the simulation results. In addition, the scattering field distributions and the plots of surface power loss density have been illustrated to analyze the RCS-reduction mechanism of our structure.
format	article
author	Jiakun Song Xiaoyu Wu Cheng Huang Jianing Yang Chen Ji Changlei Zhang Xiangang Luo
author_facet	Jiakun Song Xiaoyu Wu Cheng Huang Jianing Yang Chen Ji Changlei Zhang Xiangang Luo
author_sort	Jiakun Song
title	Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
title_short	Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
title_full	Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
title_fullStr	Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
title_full_unstemmed	Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms
title_sort	broadband and tunable rcs reduction using high-order reflections and salisbury-type absorption mechanisms
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a745d9c7ffd645009371f0ac19f90b6a
work_keys_str_mv	AT jiakunsong broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT xiaoyuwu broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT chenghuang broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT jianingyang broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT chenji broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT changleizhang broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms AT xiangangluo broadbandandtunablercsreductionusinghighorderreflectionsandsalisburytypeabsorptionmechanisms
_version_	1718387831425990656

Broadband and Tunable RCS Reduction using High-order Reflections and Salisbury-type Absorption Mechanisms

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