Microwave Power Level Stabilizing Circuit for Cesium Beam Frequency Standards.
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
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Perceived atomic resonance frequency error resulting from microwave power level changes in atomic clocks is eliminated by controlling the device microwave power source output in response to deviations from a fixed frequency relationship between the main atomic peak and a sidelobe peak of the atomic beam frequency spectrum. This is accomplished by a microwave power control servo system that includes a time sharing interrogation circuit for detecting and monitoring the frequencies of the main atomic peak and the sidelobe peak and a comparator that compares the frequencies of the main atomic and sidelobe peaks and generates a feedback control signal in response to frequency differences between the two that deviate from a fixed difference frequency. The feedback signal is used to control the microwave power source output in a manner that constrains the main atomic peak and the sidelobe peak at a fixed offset frequency. Author
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods
- Radiofrequency Wave Propagation