Abstract
The design, fabrication, and performance of miniature high-frequency annular arrays are described. A 50-MHz, 2-mm-diameter, 7-element, equal-area annular array was fabricated and tested. The array elements were defined using photolithography and the electrical contacts were made using ultrasonic wire bonding. The resulting transducer produced pulses with a -6 dB bandwidth of 52% and an insertion loss of -16 dB. A radiation pattern was collected by scanning the transducer array above the tip of a glass fiber. A -6 dB two-way beam width of 75 microns was found at f/2. The radiation pattern decreased smoothly to less than -60 dB at a distance of 550 microns.
| Original language | English |
|---|---|
| Pages (from-to) | 1010-1017 |
| Number of pages | 8 |
| Journal | IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control |
| Volume | 51 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2004 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Instrumentation
- Acoustics and Ultrasonics
- Electrical and Electronic Engineering
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Brown, J. A., Démoré, C. E. M., & Lockwood, G. R. (2004). Design and fabrication of annular arrays for high-frequency ultrasound. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 51(8), 1010-1017. https://doi.org/10.1109/TUFFC.2004.1324405