Surface acoustic wave device

Details Surface acoustic wave device Surface acoustic wave device

1994-05-02

1995-07-18

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310360, H01L 4108

Patent

active

054344654

ABSTRACT:
A surface acoustic wave device comprises a piezoelectric substrate of lithium tetraborate single crystal, and a metal film formed on the surface of the piezoelectric substrate for exciting, receiving, reflecting and/or propagating surface acoustic waves, the metal film being so formed that a cut angle of the surface of the piezoelectric substrate and propagation direction of the surface acoustic wave are an Eulerian angle representation of (0.degree.-45.degree., 30.degree.-90.degree., 40.degree.-90.degree.) and directions equivalent thereto, the surface acoustic wave having higher propagation velocity than Rayleigh waves and leaky waves, and a characteristic of radiating part of energy of the surface acoustic wave into the piezoelectric surface while propagating.

REFERENCES:
patent: 4489250 (1984-12-01), Ebata et al.
patent: 4523119 (1985-06-01), Whatmore et al.
patent: 4634913 (1987-01-01), Whatmore et al.
patent: 4672255 (1987-06-01), Suzuki et al.

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