CdS Solid state phase insensitive ultrasonic transducer

Details CdS Solid state phase insensitive ultrasonic transducer CdS Solid state phase insensitive ultrasonic transducer

1978-07-26

1980-03-25

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

29 2535, 310327, 310334, 310360, H01L 4118

Patent

active

041952448

ABSTRACT:
A phase insensitive ultrasonic transducer which includes a CdS crystal that is annealed for a selected period of time and at a selected temperature to provide substantially maximum acoustic attenuation at the operating frequency of the transducer. Two electrodes are attached to the crystal with amplifier means and a signal processing system connected to one of the electrodes to provide an ultrasonic receiver.

REFERENCES:
patent: 3093758 (1963-06-01), Hutson
patent: 3145354 (1964-08-01), Hutson
patent: 3183359 (1965-05-01), White
patent: 3234488 (1966-02-01), Fair
patent: 3240962 (1966-03-01), White
patent: 3422371 (1969-01-01), Poirier et al.
patent: 3671193 (1972-06-01), Jaskolski
Use of Power-Sensitive Detector in Pulse-Attenuation Measurements, by P. D. Southgate, JASA Vol. 39, #3, 1966, pp. 480-483.
Ultrasonic Tranducer Materials, by O. E. Mattiat, Plenum Press, N.Y.-London 1971, pp. 68-70, 93-96, 163-174.

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