한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제21권1호
  • /
  • Pages.56-61
  • /
  • 2002
  • /
  • 1225-4428(pISSN)
  • /
  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
권호 표지

압전형 초음파 배열 변환기의 음향간섭 레벨에 관한 연구

A Study on the Cross Talk Level in a Piezoelectric Ultrasonic Array Transducer

  • 발행 : 2002.01.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

초음파 진단용으로 널리 사용되는 1차원 배열 압전형 초음파 변환기는 변환기내의 인접한 소자들간의 간섭에 의해 그 특성에 많은 영향을 받는다. 따라서 본 연구에서는 유한 요소 해석법을 이용하여 압전형 1차원 배열 의료용 초음파 변환기에서 커프의 충진재와 형상의 변화에 의한 음향간섭 레벨의 경향을 분석하였다. 분석결과는 향후 진단용 초음파 변환기의 최적 설계를 위해 중요한 자료가 될 것이며, 더 나아가 치료용, 비파괴 검사용, 그리고 수중 초음파 변환기에도 적용이 가능할 것이다.

In piezoelectric ultrasonic linear array transducers widely used for diagnosis, the cross talk caused by the structural cross-coupling between adjacent elements inside the transducer affects the probe performance in a significant manner. In this study, we constructed a finite element model of a piezoelectric ultrasonic transducer, and analyzed its cross talk level with respect to the shape of and materials inside the kerf, The results of this work can be utilized in optimal design of the transducers for medical diagonosis and treatment as well as W applications.

키워드

참고문헌

  1. IEEE Trans. Ultrason. Ferroelectr. Freq. Contr. v.26 Angular response of piezoelectric elements in linear phased array ultrasound scanners S. W. Smith;O. T. von Ramm;M. E. Haran;R. L. Thurstone
  2. IEEE Ultras. Sym. Proc. Experimental investigation of cross-coupling and its influence on the elementary radiation of cross-coupling and its influence on the elementary radiation pattern in 1D Ultrasound arrays N. Felix;D. Certon;E. Lacaze;M. Lethiecq;F. Patat
  3. IEEE Ultras. Sym. Proc. Theory for cross-coupling G. S. Kino;R. Baer
  4. IEEE Ultra. Symp. Proc. Non-ideal radiations in phased array transducers J. Larson
  5. IEEE Ultras. Sym., Proc. Finite element modeling of capacitor micromachined ultrasonic transducers Y. R. Roh;B. T. Khuri-Yakub
  6. J. Acoust. Soc. Am. v.66 Dependence of the electromechanical coupling coeffiecient on the width-to-thickness ratio of plank-shaped piezoelectric transducers used for electronically scanned ultrasound diagnostic systems J. Sato;M. Kawabuchi;A. Fukumoto https://doi.org/10.1121/1.383657
  7. J. Acoust. Soc. Am. v.67 Farfield angular radiation pattern generated form arrayed piezoelectric transducers J. Sato;H. Fukukita;M. Kawabuchi;A. Fukumoto https://doi.org/10.1121/1.384466
  8. IEEE Trans. Ultrason. Ferroelectr. Freq. Contr. v.37 Simulation of piezoelectric devices by two- and three-dimensional finite elements R. Lerch
  9. IEEE Trans. Son. Ultrason. v.25 The design efficient broad-band piezoelectric transdcuers C. S. Desilets;H. D. Fraser;G. S. Kino
  10. J. Acoust. Soc. Am. v.101 Radiation from finite phased and focused linear array including interaction J. Assaad;C. Bruneel https://doi.org/10.1121/1.418237
  11. Proc. SPIE v.3341 Finite element and experimenal study of composite and 1-D array transducers W. Qi;W. Cao https://doi.org/10.1117/12.307993