Medical imaging arrays for frequencies above 25 MHz

T. A. Ritter, K. K. Shung, R. L. Tutwiler, Thomas R. Shrout

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

A fabrication method has been developed for composite linear arrays operating at a frequency of 30 MHz. The design features dual matching layers, a lens for focusing in the elevation direction, a 2-2 composite with 28μm wide ceramics and 5.3 μm polymer widths, and coaxial cable for electrical impedance matching. Bandwidths exceeding 65% and crosstalk values less than -30dB were measured on prototype arrays. A non-composite 35 MHz design has also been investigated. An interconnect method using a flex circuit and sputtered metal has been tested. Properties were then measured by fitting experimental impedance data to a model using a non-linear regression technique.

Original languageEnglish (US)
Pages (from-to)1203-1206
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1999

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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