Precision Single Sideband Crystal Units.
Semiannual rept. 15 Dec 71-15 Jun 72,
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
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The purpose of this work is to develop single sideband SSB quartz crystal units which meet a strict aging requirement, i.e., 2 X 10 to the minus 10th powerweek, when measure at the upper turning point 66C of the crystal unit after a stabilization period of four weeks. These resonators are to be used in temperature compensated crystal oscillators TCXO, where the operating temperature will be variable from about -55 to 90C. The use of a TCXO for on-frequency operation rather than an ovencontrolled crystal oscillator OCXO eliminates the need for a fast warm-up oven. However, the problem of frequency hysteresis that may occur under conditions of varying temperature still exists. Author
- Electrical and Electronic Equipment
- Manufacturing and Industrial Engineering and Control of Production Systems