Ultrasonic transducer with a plastic piezoelectric receiving lay

Details Ultrasonic transducer with a plastic piezoelectric receiving lay Ultrasonic transducer with a plastic piezoelectric receiving lay

1980-02-28

1982-10-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310800, 310336, H01L 4108

Patent

active

043541321

ABSTRACT:
In exemplary embodiments, a transmitting layer of material having a relatively high dielectric constant and high acoustic impedance, and a receiving layer of material having a relatively low dielectric constant and low acoustic impedance are superimposed such that an optimum construction is provided which simultaneously creates optimum results for the instance of transmission and reception. The two layers are interconnected by means of hybrid techniques such that they mate in a laminar manner.

REFERENCES:
patent: 2625035 (1953-01-01), Firestone
patent: 2875354 (1959-02-01), Harris
patent: 4217684 (1980-08-01), Brisken et al.
"Monolithic Silicon-PVF.sub.2 Piezoelectric Arrays for Ultrasonic Imaging" by R. G. Swartz et al., 8th Int. Symp. on Acoustic Imaging, Key Biscayne, Fla. 5-29-78 pp. 1-27.
Experimental Broadband Ultrasonic Transducers Using PVF.sub.2 Piezoelectric Film, Electronics Letters, Aug. 5, 1976, vol. 12, #16, pp. 393, 394.
Electro-Technology, Feb. 1970, vol. 85, Pamphlet 2.

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