抄録
As to the efficient ultrasonic measurement an impedance matching between a pulser and a transducer has been recognizing to be important. We developed the impedance matching technique using special transformer. We also developed the laminated transducer system to obtain large displacement ultrasound forth application of nonlinear ultrasonic because large ultrasonic energy is require for the generation of nonlinear ultrasound. In this study we combined the special transformer technique to the laminated transducer system to obtain more efficient ultrasound transmission system. Coupled piezoelectric-acoustic FEM analysis code was also applied especially as the simulator for the design of electric impedance for laminated transducers. As a result, these impedance matching techniques was effective also for laminated though quantitative behaviors of the detail of each acoustic element were difficult to estimate.
