Piezoelectric resonators

Details Piezoelectric resonators Piezoelectric resonators

1979-10-10

1982-04-20

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310364, 310312, H01L 4108

Patent

active

043261426

ABSTRACT:
A wafer of piezoelectric material is provided with electrodes on opposite surfaces thereof. Frequency fine tuning of such resonators is accomplished by relatively thin film of metal applied over the surface of at least one electrode and the adjacent non-electroded wafer material. The metal film is of such small maximum thickness that it functions as a quasi-insulator and is extremely stable over prolonged operating conditions so that the resonator parameters remain constant.

REFERENCES:
patent: 2635199 (1953-04-01), Wolfskill
patent: 2699508 (1955-01-01), Fastenau, Jr.
patent: 3363119 (1968-01-01), Koneval et al.
patent: 3401276 (1968-09-01), Curran et al.
patent: 4130771 (1978-12-01), Bottom
patent: 4218631 (1980-08-01), Yamaguchi

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