The Journal of the Acoustical Society of Korea

한국음향학회 (The Acoustical Society of Korea)
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VHF 대역에 있어서 $PbTiO_{3}$송신/P(VDF-TrFE) 수신 광대역 초음파변환자

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.)
  • 발행 : 2004.12.01
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초록

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.

키워드

참고문헌

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