Radiation properties of truncated cones to enhance the beam patterns of air-coupled transducers

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Radiation properties of cones are used to steer energy from the side lobes toward the center of the beam pattern of an air-coupled source. Two structures of superposed truncated cones are designed and implemented in a finite element package to modify the beam pattern of a piston model simulating an air-coupled transducer. Results show how the energy from the sides of the beam is conveyed toward the center of it thus widening the main lobe angular domain and smoothing the beam curve. This work is intended to support methods for range estimation performed with air-coupled transducers and localization strategies with broadband ultrasonic signals, as well as to investigate mathematical relationships at the base of radiation properties of conical structures.

Original languageEnglish
Pages (from-to)163-166
Number of pages4
JournalPhysics Procedia
Publication statusPublished - 19 Sep 2015
Event2015 International Congress on Ultrasonics - Metz, France
Duration: 10 May 201514 May 2015


  • acoustic simulation
  • air-coupled transducer
  • beam pattern
  • lobe
  • piston model
  • truncated cones

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