Modelling of CW annular arrays using limited diffraction Bessel beams
Modelling of CW annular arrays using limited diffraction Bessel beams
We present a method for characterizing the linear field of any flat, continuous-wave annular array in terms of a set of known limited-diffraction Bessel beams. The technique uses Fourier-Bessel series to model the surface pressure of the transducer surface, with each term in the series giving rise to a Bessel beam with known propagation parameters.
The analysis is applied numerically to two different transducers discussed previously in the literature. In both cases, a deeper understanding of the field emitted than was previously available is gained. Brief outlines for extending the technique to pulsed wave and non-annular arrays are also given.
85-93
Fox, Paul D.
462039ef-2dd7-4dd0-8f4d-f853ffdf990a
Holm, Sverre
0a1df60c-6e7c-4fa6-a6e2-d408f9407dc8
January 2002
Fox, Paul D.
462039ef-2dd7-4dd0-8f4d-f853ffdf990a
Holm, Sverre
0a1df60c-6e7c-4fa6-a6e2-d408f9407dc8
Fox, Paul D. and Holm, Sverre
(2002)
Modelling of CW annular arrays using limited diffraction Bessel beams.
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 49 (1), .
(doi:10.1109/58.981386).
Abstract
We present a method for characterizing the linear field of any flat, continuous-wave annular array in terms of a set of known limited-diffraction Bessel beams. The technique uses Fourier-Bessel series to model the surface pressure of the transducer surface, with each term in the series giving rise to a Bessel beam with known propagation parameters.
The analysis is applied numerically to two different transducers discussed previously in the literature. In both cases, a deeper understanding of the field emitted than was previously available is gained. Brief outlines for extending the technique to pulsed wave and non-annular arrays are also given.
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Published date: January 2002
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Local EPrints ID: 28446
URI: http://eprints.soton.ac.uk/id/eprint/28446
PURE UUID: 75c300ab-cd47-4953-b18c-3c9f9597f3ec
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Date deposited: 02 May 2006
Last modified: 15 Mar 2024 07:25
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Author:
Paul D. Fox
Author:
Sverre Holm
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