Directional sound beam emission from a configurable compact multi-source system

Abstract We propose to achieve efficient emission of highly directional sound beams from multiple monopole sources embedded in a subwavelength enclosure. Without the enclosure, the emitted sound fields have an indistinguishable or omnidirectional radiation directivity in far fields. The strong direc...

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Autores principales:	Jiajun Zhao, Rasha Al Jahdali, Likun Zhang, Ying Wu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Monopole Source High Directivity Beamforming Steering Source Layout Effective Medium Model Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5468a6e5159a4869bc459e039581782a
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spelling	oai:doaj.org-article:5468a6e5159a4869bc459e039581782a2021-12-02T15:09:03ZDirectional sound beam emission from a configurable compact multi-source system10.1038/s41598-017-16792-62045-2322https://doaj.org/article/5468a6e5159a4869bc459e039581782a2018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-16792-6https://doaj.org/toc/2045-2322Abstract We propose to achieve efficient emission of highly directional sound beams from multiple monopole sources embedded in a subwavelength enclosure. Without the enclosure, the emitted sound fields have an indistinguishable or omnidirectional radiation directivity in far fields. The strong directivity formed in the presence of the enclosure is attributed to interference of sources under degenerate Mie resonances in the enclosure of anisotropic property. Our numerical simulations of sound emission from the sources demonstrate the radiation of a highly directed sound beam of unidirectional or bidirectional patterns, depending on how the sources are configured inside the enclosure. Our scheme, if achieved, can solve the challenging problem of poor directivity of a subwavelength sound system, and can guide beam forming and collimation by miniaturized devices.Jiajun ZhaoRasha Al JahdaliLikun ZhangYing WuNature PortfolioarticleMonopole SourceHigh DirectivityBeamforming SteeringSource LayoutEffective Medium ModelMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Monopole Source High Directivity Beamforming Steering Source Layout Effective Medium Model Medicine R Science Q
spellingShingle	Monopole Source High Directivity Beamforming Steering Source Layout Effective Medium Model Medicine R Science Q Jiajun Zhao Rasha Al Jahdali Likun Zhang Ying Wu Directional sound beam emission from a configurable compact multi-source system
description	Abstract We propose to achieve efficient emission of highly directional sound beams from multiple monopole sources embedded in a subwavelength enclosure. Without the enclosure, the emitted sound fields have an indistinguishable or omnidirectional radiation directivity in far fields. The strong directivity formed in the presence of the enclosure is attributed to interference of sources under degenerate Mie resonances in the enclosure of anisotropic property. Our numerical simulations of sound emission from the sources demonstrate the radiation of a highly directed sound beam of unidirectional or bidirectional patterns, depending on how the sources are configured inside the enclosure. Our scheme, if achieved, can solve the challenging problem of poor directivity of a subwavelength sound system, and can guide beam forming and collimation by miniaturized devices.
format	article
author	Jiajun Zhao Rasha Al Jahdali Likun Zhang Ying Wu
author_facet	Jiajun Zhao Rasha Al Jahdali Likun Zhang Ying Wu
author_sort	Jiajun Zhao
title	Directional sound beam emission from a configurable compact multi-source system
title_short	Directional sound beam emission from a configurable compact multi-source system
title_full	Directional sound beam emission from a configurable compact multi-source system
title_fullStr	Directional sound beam emission from a configurable compact multi-source system
title_full_unstemmed	Directional sound beam emission from a configurable compact multi-source system
title_sort	directional sound beam emission from a configurable compact multi-source system
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/5468a6e5159a4869bc459e039581782a
work_keys_str_mv	AT jiajunzhao directionalsoundbeamemissionfromaconfigurablecompactmultisourcesystem AT rashaaljahdali directionalsoundbeamemissionfromaconfigurablecompactmultisourcesystem AT likunzhang directionalsoundbeamemissionfromaconfigurablecompactmultisourcesystem AT yingwu directionalsoundbeamemissionfromaconfigurablecompactmultisourcesystem
_version_	1718387937839677440

Directional sound beam emission from a configurable compact multi-source system

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