Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array

Abstract This paper presents a miniaturized ultra-wideband (UWB) antipodal Vivaldi antenna (AVA) array with low-scattering characteristics integrated a hybrid diffusive-absorptive metasurface. Periodic elliptical slots at the outer edges and a dielectric lens are utilized for antenna element to impr...

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Autores principales:	Jia Liu, Chengxiang Xu, Hang Yu, Jianxun Su
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2591fef081d9413cbf76cce55cb88f25
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spelling	oai:doaj.org-article:2591fef081d9413cbf76cce55cb88f252021-12-02T17:40:46ZDesign of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array10.1038/s41598-021-92051-z2045-2322https://doaj.org/article/2591fef081d9413cbf76cce55cb88f252021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92051-zhttps://doaj.org/toc/2045-2322Abstract This paper presents a miniaturized ultra-wideband (UWB) antipodal Vivaldi antenna (AVA) array with low-scattering characteristics integrated a hybrid diffusive-absorptive metasurface. Periodic elliptical slots at the outer edges and a dielectric lens are utilized for antenna element to improve performances including miniaturized size, wide bandwidth, and high gain. The optimized element is fabricated and measured, the results demonstrate that the − 10 dB impedance bandwidth is 4.5–50 GHz with a ratio bandwidth (f H/f L) of 11.1:1, and the maximum gain at 35 GHz is 12.7 dBi, which are in good agreement with simulation. By loading an optimized Minkowski-shaped metasurface as the ground reflector, which combines the multielement phase cancellation (MEPC) and EM absorption technology, the 4 × 4 array realizes a low radar cross section (RCS) without the radiation performance degradation. Simulated and measured results show that the proposed low-scattering array has a 10-dB RCS reduction band ranging from 5 to 50 GHz at normal incidence for both polarizations. Furthermore, the array structure shows extremely low-observable capability, which is larger than 15 dB of the RCS reduction from 7.1 to 50 GHz with a ratio bandwidth of 7.0:1. The results verify the feasibility of improving the performance of antenna and the UWB low-scattering functionality.Jia LiuChengxiang XuHang YuJianxun SuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jia Liu Chengxiang Xu Hang Yu Jianxun Su Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
description	Abstract This paper presents a miniaturized ultra-wideband (UWB) antipodal Vivaldi antenna (AVA) array with low-scattering characteristics integrated a hybrid diffusive-absorptive metasurface. Periodic elliptical slots at the outer edges and a dielectric lens are utilized for antenna element to improve performances including miniaturized size, wide bandwidth, and high gain. The optimized element is fabricated and measured, the results demonstrate that the − 10 dB impedance bandwidth is 4.5–50 GHz with a ratio bandwidth (f H/f L) of 11.1:1, and the maximum gain at 35 GHz is 12.7 dBi, which are in good agreement with simulation. By loading an optimized Minkowski-shaped metasurface as the ground reflector, which combines the multielement phase cancellation (MEPC) and EM absorption technology, the 4 × 4 array realizes a low radar cross section (RCS) without the radiation performance degradation. Simulated and measured results show that the proposed low-scattering array has a 10-dB RCS reduction band ranging from 5 to 50 GHz at normal incidence for both polarizations. Furthermore, the array structure shows extremely low-observable capability, which is larger than 15 dB of the RCS reduction from 7.1 to 50 GHz with a ratio bandwidth of 7.0:1. The results verify the feasibility of improving the performance of antenna and the UWB low-scattering functionality.
format	article
author	Jia Liu Chengxiang Xu Hang Yu Jianxun Su
author_facet	Jia Liu Chengxiang Xu Hang Yu Jianxun Su
author_sort	Jia Liu
title	Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
title_short	Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
title_full	Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
title_fullStr	Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
title_full_unstemmed	Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
title_sort	design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2591fef081d9413cbf76cce55cb88f25
work_keys_str_mv	AT jialiu designofaminiaturizedultrawidebandandlowscatteringantipodalvivaldiantennaarray AT chengxiangxu designofaminiaturizedultrawidebandandlowscatteringantipodalvivaldiantennaarray AT hangyu designofaminiaturizedultrawidebandandlowscatteringantipodalvivaldiantennaarray AT jianxunsu designofaminiaturizedultrawidebandandlowscatteringantipodalvivaldiantennaarray
_version_	1718379751594262528

Design of a miniaturized ultrawideband and low scattering antipodal vivaldi antenna array

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