Double and triple rotated quartz plates for surface waves

Details Double and triple rotated quartz plates for surface waves Double and triple rotated quartz plates for surface waves

1979-05-25

1980-09-02

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313R, H01L 4118

Patent

active

042208882

ABSTRACT:
The invention relates to quartz plates. The plate is a plate with double rotation. The angle .phi. lies between 6.degree. and 10.degree.. The angle .theta. lies between -41.degree.45' and -38.degree.55'. The direction of propagation forms an angle of .PSI. with an axis deduced from the electrical axis by the rotation .phi. of the plate and .PSI. lies between 26.degree. and 28.degree.. The angles .phi., .theta. and .PSI. satisfy the equation .phi.-.theta.-.PSI.=21.degree.42'.+-.8'. Application to surface waves.

REFERENCES:
patent: 3826931 (1974-07-01), Hammond
Handbook of Piezoelectric Crystals by J. P. Buchanan, WADC Technical Report 54-248, Dec. 1954, pp. 29-35 (sections on NT, MT and V cut crystals).

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