Measuring Frequency Changes due to Microwave Power Variations as a Function of C-field Setting in a Rubidium Frequency Standard

E.B. Sarosy, W.A. Johnson, S.K. Karuza, F.J. Voit

Abstract:	It has been shown in previous studies that in some cesium frequency standards there exist certain C-field settings that minimize frequency changes that are due to variations in microwave power. In order to determine whether similar results could be obtained with rubidium (Rb) frequency standards (clocks), we performed a similar study, using a completely automated measurement system, on a commercial Rb standard. From our measurements we found that changing the microwave power to the filter cell resulted in significant changes in frequency, and that the magnitude of these frequency changes at low C-field levels went to zero and decreased as the C-field was increased.
Published in:	Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting December 3 - 5, 1991 Pasadena, California
Pages:	229 - 235
Cite this article:	Sarosy, E.B., Johnson, W.A., Karuza, S.K., Voit, F.J., "Measuring Frequency Changes due to Microwave Power Variations as a Function of C-field Setting in a Rubidium Frequency Standard," Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting, Pasadena, California, December 1991, pp. 229-235.
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