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Piezoelectric ultrasonic transducer with acoustic matching plate
Piezoelectric ultrasonic transducer with acoustic matching plate
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机译:带有声匹配板的压电超声换能器
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摘要
A monolithic array ultrasonic transducer has a plurality of transducer elements formed thereon by isolating metallized areas on a piezoelectric plate without cutting the piezoelectric plate apart for each transducer element, and an acoustic matching layer having a longitudinal wave velocity within .+-.25% of a longitudinal wave velocity of the piezoelectric plate and a thickness equal to one half of that of the piezoelectric plate. The acoustic matching layer suppresses the radiation to an object of a partial wave in a direction of 60° to a normal line to the plane of the piezoelectric plate.
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