Accession Number : AD0422403

Title :   IMPROVED FREQUENCY-TEMPERATURE CHARACTERISTICS OF QUARTZ CRYSTAL UNITS.

Descriptive Note : Semi-annual progress rept. no. 1, 1 July 6230 Apr 63,

Corporate Author : VICTOR ELECTRONIC SYSTEMS CO CHICAGO ILL

Personal Author(s) : Tyler,L. A.

Report Date : 30 APR 1963

Pagination or Media Count : 39

Abstract : Two different methods for the temperature compensation of an AT type quartz resonator by means of stresses applied to the crystal plate were explored. The first method employs compressional and extensional stresses in the Z' direction. The second method utilizes a flexural strain about the X-axis. Compensated resonators of both types were fabricated and tested. These exhibit improved frequency stability as compared to uncompensated resonators, but the goal of 1 part per million has not been achieved over the entire -40 to +80 C range. (Author)

Descriptors :   (*QUARTZ, CRYSTALS), (*CRYSTALS, TEMPERATURE CONTROL), (*QUARTZ RESONATORS, FREQUENCY), STRESSES, COMPRESSIVE PROPERTIES, TENSILE PROPERTIES, TEMPERATURE SENSITIVE ELEMENTS, STABILITY, SENSITIVITY, INSTRUMENTATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE