Ultrasonic transducers with resonant cavities as emitters for air-borne applications

In this work a new proposal to improve the emission efficiency of air-borne ultrasonic transducers is introduced. A theoretical ultrasonic transducer design is studied using a piezoelectric membrane and a Helmholtz resonator with two acoustic ports. The resonator provides radiation in the acoustic p...

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Detalles Bibliográficos
Autores: Octavio Manzanares, Alberto, Montero de Espinosa Freijo, Francisco
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/66530
Acceso en línea:http://hdl.handle.net/10261/66530
Access Level:acceso abierto
Palabra clave:cMUT
pMUT
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spelling Ultrasonic transducers with resonant cavities as emitters for air-borne applicationsOctavio Manzanares, AlbertoMontero de Espinosa Freijo, FranciscocMUTpMUTIn this work a new proposal to improve the emission efficiency of air-borne ultrasonic transducers is introduced. A theoretical ultrasonic transducer design is studied using a piezoelectric membrane and a Helmholtz resonator with two acoustic ports. The resonator provides radiation in the acoustic ports in phase with that of the membrane. Several finite element simulations and experimental results are used to study the device. The finite element models were used to compare its behaviour with that of conventional vacuum-cavity transducers. These results show an improvement in the bandwidth reaching a quality factor value of 19. Furthermore, the experimental measurements were used to study the effects of the resonant cavity in the response. Several measurements for different cavity depths were performed. The results show an improvement of 25 dB in the emitted pressure through tuning the transducer.Peer reviewedSociedad Española de Cerámica y Vidrio201320132009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/66530reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://boletines.secv.es/upload/2009090495937.200948205.pdfinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/665302026-05-22T06:33:51Z
dc.title.none.fl_str_mv Ultrasonic transducers with resonant cavities as emitters for air-borne applications
title Ultrasonic transducers with resonant cavities as emitters for air-borne applications
spellingShingle Ultrasonic transducers with resonant cavities as emitters for air-borne applications
Octavio Manzanares, Alberto
cMUT
pMUT
title_short Ultrasonic transducers with resonant cavities as emitters for air-borne applications
title_full Ultrasonic transducers with resonant cavities as emitters for air-borne applications
title_fullStr Ultrasonic transducers with resonant cavities as emitters for air-borne applications
title_full_unstemmed Ultrasonic transducers with resonant cavities as emitters for air-borne applications
title_sort Ultrasonic transducers with resonant cavities as emitters for air-borne applications
dc.creator.none.fl_str_mv Octavio Manzanares, Alberto
Montero de Espinosa Freijo, Francisco
author Octavio Manzanares, Alberto
author_facet Octavio Manzanares, Alberto
Montero de Espinosa Freijo, Francisco
author_role author
author2 Montero de Espinosa Freijo, Francisco
author2_role author
dc.subject.none.fl_str_mv cMUT
pMUT
topic cMUT
pMUT
description In this work a new proposal to improve the emission efficiency of air-borne ultrasonic transducers is introduced. A theoretical ultrasonic transducer design is studied using a piezoelectric membrane and a Helmholtz resonator with two acoustic ports. The resonator provides radiation in the acoustic ports in phase with that of the membrane. Several finite element simulations and experimental results are used to study the device. The finite element models were used to compare its behaviour with that of conventional vacuum-cavity transducers. These results show an improvement in the bandwidth reaching a quality factor value of 19. Furthermore, the experimental measurements were used to study the effects of the resonant cavity in the response. Several measurements for different cavity depths were performed. The results show an improvement of 25 dB in the emitted pressure through tuning the transducer.
publishDate 2009
dc.date.none.fl_str_mv 2009
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/66530
url http://hdl.handle.net/10261/66530
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://boletines.secv.es/upload/2009090495937.200948205.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Sociedad Española de Cerámica y Vidrio
publisher.none.fl_str_mv Sociedad Española de Cerámica y Vidrio
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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