Principles of adaptive element spacing in linear array antennas

Abstract A novel approach to linear array antennas with adaptive inter-element spacing is presented for the first time. The main idea is based upon electronically displacing the phase center location of the antenna elements, which determine their relative coordinates in the array configuration. This...

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Autores principales:	Tanzeela Mitha, Maria Pour
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3ea76e7bf5f44cab013e56fc2c10885
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spelling	oai:doaj.org-article:f3ea76e7bf5f44cab013e56fc2c108852021-12-02T13:19:30ZPrinciples of adaptive element spacing in linear array antennas10.1038/s41598-021-84874-72045-2322https://doaj.org/article/f3ea76e7bf5f44cab013e56fc2c108852021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84874-7https://doaj.org/toc/2045-2322Abstract A novel approach to linear array antennas with adaptive inter-element spacing is presented for the first time. The main idea is based upon electronically displacing the phase center location of the antenna elements, which determine their relative coordinates in the array configuration. This is realized by employing dual-mode microstrip patch antennas as a constitutive element, whose phase center location can be displaced from its physical center by simultaneously exciting two modes. The direction and the amount of displacement is controlled by the amplitude and phase of the modes at the element level. This in turn facilitates reconfiguring the inter-element spacing at the array level. For instance, a uniformly-spaced array could be electronically transformed into a non-uniform one without any mechanical means. The proposed idea is demonstrated in two- and three-element linear antenna arrays. The technique has the potential to control the radiation characteristics such as sidelobe levels, position of the nulls, and the beamwidths in small arrays, which are useful for adaptively controlling the array performance in emerging wireless communication systems and radars.Tanzeela MithaMaria PourNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tanzeela Mitha Maria Pour Principles of adaptive element spacing in linear array antennas
description	Abstract A novel approach to linear array antennas with adaptive inter-element spacing is presented for the first time. The main idea is based upon electronically displacing the phase center location of the antenna elements, which determine their relative coordinates in the array configuration. This is realized by employing dual-mode microstrip patch antennas as a constitutive element, whose phase center location can be displaced from its physical center by simultaneously exciting two modes. The direction and the amount of displacement is controlled by the amplitude and phase of the modes at the element level. This in turn facilitates reconfiguring the inter-element spacing at the array level. For instance, a uniformly-spaced array could be electronically transformed into a non-uniform one without any mechanical means. The proposed idea is demonstrated in two- and three-element linear antenna arrays. The technique has the potential to control the radiation characteristics such as sidelobe levels, position of the nulls, and the beamwidths in small arrays, which are useful for adaptively controlling the array performance in emerging wireless communication systems and radars.
format	article
author	Tanzeela Mitha Maria Pour
author_facet	Tanzeela Mitha Maria Pour
author_sort	Tanzeela Mitha
title	Principles of adaptive element spacing in linear array antennas
title_short	Principles of adaptive element spacing in linear array antennas
title_full	Principles of adaptive element spacing in linear array antennas
title_fullStr	Principles of adaptive element spacing in linear array antennas
title_full_unstemmed	Principles of adaptive element spacing in linear array antennas
title_sort	principles of adaptive element spacing in linear array antennas
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f3ea76e7bf5f44cab013e56fc2c10885
work_keys_str_mv	AT tanzeelamitha principlesofadaptiveelementspacinginlineararrayantennas AT mariapour principlesofadaptiveelementspacinginlineararrayantennas
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Principles of adaptive element spacing in linear array antennas

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