Exact design of acoustic matching networks for ultrasonic transducers

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概要

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• A synthesis and design of the acoustic matching layers for piezoelectric ultrasonic transducers are presented. It is shown that the acoustic characteristic impedances for matching layers are determined from the given operating attenuation when each thickness of the matching layers is taken for the quater-wavelength. As an example, a procedure of design for two layer-type transducers is demonstrated, where thoretical bandwidth of a ceramic transducer is about 70% and maximum insertion loss is expected 1. 8dB for water load. The performance of this transducer is found to be in good agreement with the theoretical prediction.

• 社団法人日本音響学会の論文

著者

• Matsunaka Toshiyuki

  Shimadzu Seisakusho Ltd.

• Shibayama Kimio

  Research Institute Of Electrical Communication Tohoku University

• Sato Hiroaki

  Nihon Dempa Kygyo Co.

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