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A $PbTiO_{3}$ Transmitting/P(VDF-TrFE) Receiving Wideband Ultrasonic Transducer in VHF Band  

Ha, Kang-Lyeol (Dept. of Physics, Pukyong National Univ.)
Kim, Moo-Joon (Dept. of Physics, Pukyong National Univ.)
Kim, Jung-Ho (Dept. of Acous. & Vib. Eng., Graduate School of Pukyong National Univ.)
Kim, Jung-Soon (Dept. of Acous. & Vib. Eng., Graduate School of Pukyong National Univ.)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.4E, 2004 , pp. 120-124 More about this Journal
Abstract
A new type of high frequency wideband ultrasonic transducer with a separation between a transmitter and a receiver was proposed and its characteristics were simulated using a PSpice model. The piezoelectric ceramic $PbTiO_{3}$ as a transmitter and the piezoelectric copolymer P(VDF- TrFE) as a receiver were used for high sensitivity and wide bandwidth, respectively. The characteristics of the focusing transducer with center frequency of approximately 35MHz fabricated in this study showed very wide bandwidth, which could give an axial spatial resolution better than $30{\mu}m$ in B-mode image for biological tissues.
Keywords
Ultrasonic transducer; P(VDF-TrFE); Co-polymer; VHF band;
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