Design and fabrication of annular arrays for high-frequency ultrasound

@article{Brown2004DesignAF,
  title={Design and fabrication of annular arrays for high-frequency ultrasound},
  author={J. Brown and C. E. M. Demore and G. R. Lockwood},
  journal={IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
  year={2004},
  volume={51},
  pages={1010-1017}
}
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… CONTINUE READING

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