Multi-layer acoustic transducer for high frequency ultrasound

Details Multi-layer acoustic transducer for high frequency ultrasound Multi-layer acoustic transducer for high frequency ultrasound

1986-11-17

1988-06-07

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310360, 310357, 310359, 252 629, 427100, 29 2535, H01L 4108

Patent

active

047499001

ABSTRACT:
The invention relates to a multi-layered piezoelectric acoustic transducer for generating layers of the same piezoelectric material are provided such tool alternate layers have different crystallographic orientations and different piezoelectric coupling coefficients. The layers may be provided so that alternate layers have crystallographic orientations which provide maximum electro-acoustic coupling and layers which provide minimum electro-acoustic coupling.

REFERENCES:
patent: 3091707 (1963-05-01), Hutson
patent: 3471721 (1969-10-01), Moore
patent: 3497727 (1970-02-01), DeKlerk et al.
patent: 3506858 (1970-04-01), Shaw
patent: 3590287 (1971-06-01), Berlincourt et al.
patent: 3846649 (1974-11-01), Lehmann et al.
patent: 4142124 (1979-02-01), Ogawa et al.
patent: 4164676 (1979-08-01), Nishiyama et al.
patent: 4590399 (1986-05-01), Roxolo et al.

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