Surface wave device

Details Surface wave device Surface wave device

1991-05-16

1993-02-02

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313B, 333193, H01L 4103

Patent

active

051840421

ABSTRACT:
A surface wave device utilizing a surface wave of an SH type whose displacement is mainly displacement in the direction perpendicular to the direction of the surface wave propagation, the above piezoelectric substrate being made of a piezoelectric material whose ratio of the elastic stiffness constant C.sub.33.sup.D to the elastic stiffness constant C.sub.44.sup.E is more than 4.

REFERENCES:
patent: 4243960 (1981-01-01), White et al.
patent: 4295108 (1981-10-01), Ieki
patent: 4401956 (1983-08-01), Joshi
patent: 4435441 (1984-03-01), Mariani et al.
patent: 4523119 (1985-06-01), Whatmore et al.
patent: 4602182 (1986-07-01), Webster

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