Abstract
A 3mm, 50 MHz ultrasound annular array incorporating six equal-area elements was designed and fabricated. The array incorporated fine-grain lead titanate to reduce lateral coupling. The kerfs were diced to 30 microns using laser micromachining. A lens was used to provide an f-number of 3, The interconnect was achieved by sputter masking and application of silver epoxy. The average center frequency and bandwidth of the array elements was 55 MHz and 22%, respectively. The maximum nearest-element crosstalk throughout the passband was measured as -22 dB in water, and insertion loss varied from 11-29 dB. Imaging of an 8 Urn wire target with one of the outer elements showed a practical imaging depth starting under 6 mm, which agreed well with simulations.
Original language | English (US) |
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Pages (from-to) | 865-868 |
Number of pages | 4 |
Journal | Proceedings of the IEEE Ultrasonics Symposium |
Volume | 1 |
State | Published - 2003 |
Event | 2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States Duration: Oct 5 2003 → Oct 8 2003 |
All Science Journal Classification (ASJC) codes
- Acoustics and Ultrasonics