Method of angle correcting doubly rotated crystal resonators

Details Method of angle correcting doubly rotated crystal resonators Method of angle correcting doubly rotated crystal resonators

1981-02-27

1983-03-01

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310361, 310369, 29 2535, H01L 4108

Patent

active

043756042

ABSTRACT:
Doubly rotated quartz crystal blanks such as the SC, IT and FC cuts have ir apparent angles of cut and hence their frequency vs. temperature characteristics modified by changing the contours of one or both of the convex sides thereof, or by changing the electrode areas thereof; or a combination of these two changes.

REFERENCES:
patent: 2159796 (1939-05-01), Hawk
patent: 2486916 (1949-11-01), Bottom
patent: 3097315 (1963-07-01), Shinada et al.
patent: 3979614 (1976-09-01), Toyoda
patent: 4050126 (1977-09-01), Ikeno et al.
patent: 4070502 (1978-01-01), Vig et al.
patent: 4188557 (1980-02-01), Mattuschka
patent: 4262227 (1981-04-01), Ikeno et al.

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