Airborne broad-beam emitter from a capacitive transducer and a cylindrical structure

F. Guarato, G. Barduchi de Lima, J.F.C. Windmill, A. Gachagan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)
98 Downloads (Pure)

Abstract

Beamwidth broadening of an ultrasonic air-coupled transducer is performed by an emitter constituted of an electrostatic transducer and of a cylinder with an opening at the top covering the surface of the transducer. The acoustic emission is thus forced through a hole smaller than the diameter of the transducer’s surface. In particular, a cylinder with an upper diameter of 10mm and a height of 5mm ensures the beam pattern of the final emitter is broad across a wide frequency range. Sound attenuation is reduced and lobes in the transducer’s beam pattern are cancelled. Beam broadening can improve range estimation techniques and ultrasonic sonar as a wider area can be inspected with one emission with no need for scanning.
Original languageEnglish
Title of host publication2016 IEEE International Ultrasonics Symposium (IUS)
Place of PublicationPiscataway
PublisherIEEE
Number of pages4
ISBN (Print)9781467398985
DOIs
Publication statusPublished - 3 Nov 2016
EventIEEE International Ultrasonics Symposium 2016 - VINCI Convention Center, Tours, France
Duration: 18 Sep 201621 Sep 2016
http://sites.ieee.org/ius-2016/

Publication series

Name
ISSN (Electronic)1948-5727

Conference

ConferenceIEEE International Ultrasonics Symposium 2016
Abbreviated title2016 IEEE IUS
CountryFrance
CityTours
Period18/09/1621/09/16
Internet address

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Keywords

  • beam pattern
  • broad beamwidth
  • ultrasonic emitter
  • airborne transducer
  • sonar
  • ultrasonic ranging

Cite this

Guarato, F., Barduchi de Lima, G., Windmill, J. F. C., & Gachagan, A. (2016). Airborne broad-beam emitter from a capacitive transducer and a cylindrical structure. In 2016 IEEE International Ultrasonics Symposium (IUS) Piscataway: IEEE. https://doi.org/10.1109/ULTSYM.2016.7728416