Accession Number : ADD011652

Title :   Cut Angles for Quartz Crystal Resonators.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Kahan,A

Report Date : 12 Feb 1985

Pagination or Media Count : 19

Abstract : The present invention concerns itself with crystallographically doubly rotated quartz orientations vibrating in the transverse c-mode with turnover temperatures which are considerably less sensitive to angular misorientation than the comparable well known AT- or BT-cuts. These crystals are arbitrarily designated as AK-cut crystals and are defined by phi-angle variations between 30 deg.-60 deg, and theta-angle variations between 12 deg.-32 deg. The turnover temperatures of these resonators are between 60 deg. C and 200 deg. C. (Author)

Descriptors :   *PATENTS, *QUARTZ RESONATORS, *SINGLE CRYSTALS, *PIEZOELECTRIC CRYSTALS, CUTTING, CRYSTALLOGRAPHY, ORIENTATION(DIRECTION), CRYSTAL OSCILLATORS, TRANSVERSE, FABRICATION, ROTATION, ANGLES, METHODOLOGY, TEMPERATURE, RESONANCE, CRYSTALS, AXES, INVENTIONS

Subject Categories : Electrical and Electronic Equipment
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE