Accession Number : ADD009844

Title :   Method of Fabricating Acceleration Resistant Crystal Resonators and Acceleration Resistant Crystal Resonators so Formed.

Descriptive Note : Patent Application,


Personal Author(s) : Ballato,Arthur ; Vig,John R

Report Date : 29 Sep 1982

Pagination or Media Count : 11

Abstract : An acceleration-resistant crystal resonator is made from a single quartz plate that is optically twinned into a left-handed (LH) quartz portion and a right-handed (RH) quartz portion. According to the method, the optically twinned single quartz plate is formed into a resonator plate wherein the effective thickness of the (LH) portion is substantially the same as the effective thickness of te (RH) portion. The resonator plate is then mounted and bonded to the support structure of a crystal resonator enclosure. A pair of electrodes is then deposited onto the (LH) portion and a pair of electrodes deposited onto the (RH) portion. The thickness of the two pairs of electrodes is then adjusted so that the resonant frequency of the resonator on the (LH) portion is substantially the same as the resonant frequency of the resonator on the (RH) portion. The pairs of electrodes are then interconnected to each other and to an oscillator circuit so that in-phase vibration of the two portions is assured. The enclosure is then hermetically sealed. (Author)

Descriptors :   *Patent applications, *Crystals, *Quartz resonators, *Fabrication, *Methodology, Acceleration, Resistance, Tolerance, Oscillators, Electrodes, Resonant frequency, Inventions

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE