NASA NTRS · 19860000105
Broadband Ultrasonic Transducers
Abstract
New geometry spreads out resonance region of piezoelectric crystal. In new transducer, crystal surfaces made nonparallel. One surface planar; other, concave. Geometry designed to produce nearly uniform response over a predetermined band of frequencies and to attenuate strongly frequencies outside band. Greater bandwidth improves accuracy of sonar and ultrasonic imaging equipment.
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Heyser, R. C.. 1986-05-01. Broadband Ultrasonic Transducers. https://ntrs.nasa.gov/citations/19860000105
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