Ultrasound transducer models for piezoelectric polymer films
1989; Institute of Electrical and Electronics Engineers; Volume: 36; Issue: 3 Linguagem: Inglês
10.1109/58.19169
ISSN2373-7840
Autores Tópico(s)Advanced Fiber Optic Sensors
ResumoA method is presented for determining the piezoelectric constants and the frequency-dependent dielectric properties of the polymers from a five-step algorithm based on analysis of air-loaded broadband impedance measurements. It is shown how to account for the frequency-dependent lossy properties of these films in an equivalent impedance circuit model and a modified Mason's model. Comparisons between the models and actual film transducers show excellent broadband simulation of both electrical input impedance and ultrasonic pulse-echo performance. >
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