Planar array with bidirectional elements for tunnel environments

Abstract The growing demands for wireless communications in tunnel environments are driven by requests for maintaining uninterrupted internet access for users in tunnels as well as wireless connections for wireless sensors, security, and control networks. Nevertheless, wireless networks in tunnel en...

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Autores principales:	Ren Wang, Bing-Zhong Wang, Xiao Ding, Jun-Yu Ou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2f8c91ba838c433493bd63149979ff3f
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spelling	oai:doaj.org-article:2f8c91ba838c433493bd63149979ff3f2021-12-02T15:06:13ZPlanar array with bidirectional elements for tunnel environments10.1038/s41598-017-15817-42045-2322https://doaj.org/article/2f8c91ba838c433493bd63149979ff3f2017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-15817-4https://doaj.org/toc/2045-2322Abstract The growing demands for wireless communications in tunnel environments are driven by requests for maintaining uninterrupted internet access for users in tunnels as well as wireless connections for wireless sensors, security, and control networks. Nevertheless, wireless networks in tunnel environments are associated with technical challenges related to elongated wireless coverage in two opposite near-end-fire directions. Here, we introduce a low-profile bidirectional antenna that can be mounted on a large ground plane and that has a dual-magnetic-current mode exhibiting radiation patterns with 3-dB beamwidth coverage at near-end-fire angles. Furthermore, we realized a planar array with eight such bidirectional antennas that were configured as a sparse array in order to reduce the commonplace issues of mutual coupling and grating lobes. The radiation beams of the proposed antenna array can scan in the end-fire area (60° < φ < 120°, 45° < θ < 80°), with scanning gains of 11~15 dB in the near-end-fire directions. In addition, we demonstrate that the proposed array can adaptively generate a directional single beam or multiple beams according to the positions of users, which is suitable for intelligent communication systems with low power consumptions and high communication bandwidths in tunnel environments.Ren WangBing-Zhong WangXiao DingJun-Yu OuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ren Wang Bing-Zhong Wang Xiao Ding Jun-Yu Ou Planar array with bidirectional elements for tunnel environments
description	Abstract The growing demands for wireless communications in tunnel environments are driven by requests for maintaining uninterrupted internet access for users in tunnels as well as wireless connections for wireless sensors, security, and control networks. Nevertheless, wireless networks in tunnel environments are associated with technical challenges related to elongated wireless coverage in two opposite near-end-fire directions. Here, we introduce a low-profile bidirectional antenna that can be mounted on a large ground plane and that has a dual-magnetic-current mode exhibiting radiation patterns with 3-dB beamwidth coverage at near-end-fire angles. Furthermore, we realized a planar array with eight such bidirectional antennas that were configured as a sparse array in order to reduce the commonplace issues of mutual coupling and grating lobes. The radiation beams of the proposed antenna array can scan in the end-fire area (60° < φ < 120°, 45° < θ < 80°), with scanning gains of 11~15 dB in the near-end-fire directions. In addition, we demonstrate that the proposed array can adaptively generate a directional single beam or multiple beams according to the positions of users, which is suitable for intelligent communication systems with low power consumptions and high communication bandwidths in tunnel environments.
format	article
author	Ren Wang Bing-Zhong Wang Xiao Ding Jun-Yu Ou
author_facet	Ren Wang Bing-Zhong Wang Xiao Ding Jun-Yu Ou
author_sort	Ren Wang
title	Planar array with bidirectional elements for tunnel environments
title_short	Planar array with bidirectional elements for tunnel environments
title_full	Planar array with bidirectional elements for tunnel environments
title_fullStr	Planar array with bidirectional elements for tunnel environments
title_full_unstemmed	Planar array with bidirectional elements for tunnel environments
title_sort	planar array with bidirectional elements for tunnel environments
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2f8c91ba838c433493bd63149979ff3f
work_keys_str_mv	AT renwang planararraywithbidirectionalelementsfortunnelenvironments AT bingzhongwang planararraywithbidirectionalelementsfortunnelenvironments AT xiaoding planararraywithbidirectionalelementsfortunnelenvironments AT junyuou planararraywithbidirectionalelementsfortunnelenvironments
_version_	1718388502775726080

Planar array with bidirectional elements for tunnel environments

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