Accession Number : ADD011630
Title : Method of Fabricating Acceleration Resistant Crystal Resonators and Acceleration Resistant Crystal Resonators so Formed.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC
Personal Author(s) : Ballato,A ; Vig,J R
Report Date : 21 Dec 1982
Pagination or Media Count : 5
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 the (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 : *PATENTS, *QUARTZ RESONATORS, *ACCELERATION TOLERANCE, RESONANT FREQUENCY, MONOLITHIC STRUCTURES(ELECTRONICS), PHASE SHIFT CIRCUITS, ELECTROOPTICS, PLATES, OSCILLATORS, ELECTRODES, RESONATORS, CIRCUITS, THICKNESS, QUARTZ, TOLERANCE
Subject Categories : Electrooptical and Optoelectronic Devices
Distribution Statement : APPROVED FOR PUBLIC RELEASE