Apparatus and method for adjusting the frequency of a resonator

Details Apparatus and method for adjusting the frequency of a resonator Apparatus and method for adjusting the frequency of a resonator

1985-07-17

1986-12-23

Newsome, John H.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

427 531, 427100, B05D 512

Patent

active

046311971

ABSTRACT:
A method and apparatus is disclosed to allow the frequency adjustment of a crystal resonator sealed in a housing. The housing includes a transparent area which has plating material deposited thereon. The plating material is vaporized by a laser beam which sprays onto the crystal resonator thereby adjusting the operating frequency. The laser beam is scanned over the transparent area until an effective amount of plating material has been vaporized to adjust the frequency of the crystal resonator.

REFERENCES:
patent: 3028262 (1962-04-01), Klingsporn
patent: 4107349 (1978-08-01), Vig
patent: 4112134 (1978-09-01), Buynak et al.
patent: 4200669 (1980-04-01), Schaefer et al.
patent: 4281030 (1981-07-01), Silfvast
patent: 4300474 (1981-11-01), Livsey
patent: 4427723 (1984-01-01), Swain
Gutfeld, IBM TDB, vol. 17, No. 6, Nov. 1974, pp. 1807, 1808.
U.S. Defensive Publication T988,007, Drew et al., Nov. 6, 1979.

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