Optimum active area on the performance of unturned P(VDF-TrFE) piezoelectric copolymer ultrasonic transducers

In the design of ultrasonic transducers for medical and non-destructive applications, the active area of the transducer is an important factor for performance. In this paper, the optimum active area and the thickness dependence of P(VDF-TrFE) piezo-copolymer films for unturned ultrasonic transducers...

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Bibliographic Details
Main Authors: Li, G.R., Lin, W., Wu, Y.J., Wen, J.X., Ohigashi, H., Yin, Q.R.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic transducers
Biomedical transducers
Dielectric losses
Equations
Frequency
Impedance
Piezoelectric films
Piezoelectric transducers
Propagation losses
Ultrasonic transducers
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Summary:In the design of ultrasonic transducers for medical and non-destructive applications, the active area of the transducer is an important factor for performance. In this paper, the optimum active area and the thickness dependence of P(VDF-TrFE) piezo-copolymer films for unturned ultrasonic transducers are discussed in terms of the transducer loss (TL), obtained from the modified Mason's equivalent circuit. The experimental results of TL agree with the simulations for two unturned P(VDF-TrFE) ultrasonic transducers, with 41 and 83 /spl mu/m thick piezo-polymer films, respectively.
DOI:10.1109/ISE.1996.578265