Surface-acoustic-wave device

Details Surface-acoustic-wave device Surface-acoustic-wave device

1980-08-14

1982-11-02

Grimley, A. T.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

307424, H03F 700

Patent

active

043575536

ABSTRACT:
A surface-acoustic-wave device has a laminate formed of a semiconductor and a piezoelectric layer and a depletion layer control means locally provided at an interface portion of the semiconductor and said piezoelectric layer, wherein a parametric interaction is caused at a region other than an area where the depletion layer control means is provided and a depletion layer capacitance is controlled by applying a DC bias voltage and a pumping voltage to the depletion layer control means.

REFERENCES:
patent: 3634151 (1972-01-01), Sato
patent: 3833867 (1974-09-01), Solie
patent: 4124828 (1978-11-01), Bert
patent: 4134623 (1979-01-01), Tournois et al.

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