Generation of Bessel Beam from Equiamplitude-Driven Annular Transducer Array Consisting of a Few Elements
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概要
- 論文の詳細を見る
We present a method for generating a nondiffraction beam using an annular transducer array. In this method, each elements driven with equiamplitude and with an antiphase from its neighboring elements. Theoretical and experimental analyses of an array of this type have been carried out, and the feasibility of this method is confirmed. The beam from a continuous wave is shown using radiated pressure magnitude distributions and it is shown that there exist most suitable values of the width and number of elements. When the array is driven by a burst signal, the beam propagates as a plane wave which has an amplitude corresponding to the zeroth-order Bessel function of the first kind, J_0. Since this beam is realized by an annular array consisting of a few elements, it suggests the possibility of a transducer of this form developing into a source which generates nondiffraction beams.
- 社団法人応用物理学会の論文
- 1999-05-30
著者
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増山 裕之
鳥羽商船高専
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Masuyama Hiroyuki
Institute Of Engineering Mechanics And Systems University Of Tsukuba
-
Nagai Keinosuke
Institute Of Applied Physics University Of Tsukuba
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Mizutani Koichi
Institute Of Engineering Mechanics And Systems University Of Tsukuba
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Yokoyama T
Department Of Applied Physics National Defense Academy
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Yokoyama Tomoki
Department Of Applied Physics National Defense Academy
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Mizutani Koichi
Institute Of Applied Physics University Of Tsukuba
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