Title :
Optimum active area on the performance of unturned P(VDF-TrFE) piezoelectric copolymer ultrasonic transducers
Author :
Li, G.R. ; Lin, W. ; Wu, Y.J. ; Wen, J.X. ; Ohigashi, H. ; Yin, Q.R.
Author_Institution :
Inst. of Org. Chem., Acad. Sinica, Shanghai, China
Abstract :
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 μm thick piezo-polymer films, respectively
Keywords :
biomedical ultrasonics; equivalent circuits; losses; piezoelectric transducers; polymer blends; polymer films; ultrasonic materials testing; ultrasonic transducers; 41 mum; 83 mum; medical application; modified Mason equivalent circuit; nondestructive application; optimum active area; performance; simulations; thickness dependence; transducer loss; unturned P(VDF-TrFE) piezoelectric copolymer ultrasonic transducers; Acoustic transducers; Biomedical transducers; Dielectric losses; Equations; Frequency; Impedance; Piezoelectric films; Piezoelectric transducers; Propagation losses; Ultrasonic transducers;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578265
