Composite ultrasound transducer arrays for operation above 20 MHz

Timothy Ritter, K. Kirk Shung, Xuecang Geng, Pat Lopath, Richard Tutwiler, Thomas Shrout

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

Methods for fabricating and modeling high frequency 2-2 composites and arrays are presented. The composites are suitable for arrays and small aperture single element devices operating above 20 MHz. Coupling coefficients above 0.65 and lateral mode frequencies near 60 MHz were achieved with this composite. Backing and matching materials were prepared to provide up to 70% bandwidth and coaxial cable was used to impedance match the elements to a 50 ohm source. A TPX lens was fabricated and bonded to the face to provide focusing in the elevation direction. Three prototype 4 element 30 MHz linear arrays were designed and built. The designs were analyzed in a time domain finite element analysis program and excellent agreement between theory and experiment was achieved.

Original languageEnglish (US)
Pages (from-to)67-75
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3664
StatePublished - Jan 1 1999
EventProceedings of the 1999 Medical Imaging - Ultrasonic Trnasducer Engineering - San Diego, CA, USA
Duration: Feb 24 1999Feb 25 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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