PSpice modelling of ultrasound transducers: Comparison of software models to experiment

This paper presents a complete PSpice model of an ultrasound single-element transducer, including electrical and mechanical matching as well as the fo cusing lens. By using this model, it is possible to obtain a relation betwe en the electrical driving source and the acoustic velocity on the transduce r surface. This boundary condition then allows the acoustic field to be cal culated by numerical methods. Experimental data obtained with two different transducers are in good agreement with results predicted by the related mo dels.