ULTRASONIC TRANSDUCER FOR IMPROVING ACCOUSTIC AND HEAT CHARACTERISTIC

摘要

An ultrasonic transducer improves an acoustic feature by distributing heat with thermal conduction of an aluminum layer which is adjacent to an active element and forming a boundary side of a matching layer with a complex structure. The present invention improves a heat distribution feature of the ultrasonic transducer by heating heat which is generated in the active element with a metal layer of aluminum which is adjacent to the active element, and heat generated by multiple reflections. When an ultrasonic signal is delivered to a tested object through the complex structure and the metal layer on the boundary side which is positioned between a first material and a second material, the present invention improves the sensitivity and the bandwidth of the ultrasonic transducer.