Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

The Acoustical Society of Korea (한국음향학회)
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Characteristics of a $PbTiO_{3}$ Transmitting/P(VDF-TrFE) Receiving Ultrasonic Transducer in VHF Band

  • Ha Kang-Lyeol (Dept. of Physics, Pukyong Nat'1 Univ.) ;
  • Kim Moo-Joon (Dept. of Physics, Pukyong Nat'1 Univ.) ;
  • Kim Jung-Ho (Dept. of Acous. & Vib. Eng., Graduate School of Pukyong Nat'1 Univ.) ;
  • Kim Jung-Soon (Dept. of Acous. & Vib. Eng., Graduate School of Pukyong Nat'1 Univ.)
  • Published : 2004.05.01
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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 the 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 a center frequency approximately 40MHz focusing transducer fabricated in this study showed very wide bandwidth which could give an axial spatial resolution better than 30um in the B-mode image for biological tissues.

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