Accession Number : ADD011575

Title :   Cylindrical Crystal Resonator.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Ballato,A

Report Date : 11 Feb 1985

Pagination or Media Count : 37

Abstract : Improvement of resonator circuit parameters, unwanted mode suppression, and the frequency-temperature characteristic of a crystal resonator is provided by a doubly cut crystal resonator plate having at least one major face including a cylindrical contour, the axis of which is parallel to the direction of the projection of the eigenvector (the normal coordinate) for the desired operating mode. The cylinder axis is at an angle to the doubly rotated electrical axis such that the fast shear b mode is suppressed while the slow shear c mode is unaffected. The radius of the cylinder is selectively chosen for altering the frequency-temperature characteristic. (Author)

Descriptors :   *PATENT APPLICATIONS, *QUARTZ RESONATORS, *CYLINDRICAL BODIES, FREQUENCY, TEMPERATURE, CRYSTALS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE