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 language||English (US)|
|Number of pages||4|
|Journal||Proceedings of the IEEE Ultrasonics Symposium|
|State||Published - Dec 1 1999|
All Science Journal Classification (ASJC) codes
- Acoustics and Ultrasonics