Matching region for damped piezoelectric ultrasonic apparatus

Details Matching region for damped piezoelectric ultrasonic apparatus Matching region for damped piezoelectric ultrasonic apparatus

1982-09-29

1985-03-26

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310334, 310335, 310336, 73644, H01L 4108

Patent

active

045075824

ABSTRACT:
An acoustic impedance match between an ultrasonic transducer and an adjacent transmission medium is obtained, with performance over a relatively wide bandwidth, by providing a special matching region between the transducer and the transmission medium. The matching region includes a layer having a multiplicity of tapered elements. Each of the elements tapers down in size in the direction away from the transducer.

REFERENCES:
patent: 2833991 (1958-05-01), Howry
patent: 3995179 (1976-11-01), Flournoy et al.

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