A dynamic analysis of the LO noise transfer mechanism in a Rb-cell frequency standard

The authors are also affiliated with the Istituto' Tstitntu Nazioniln di fisica dolla Matoria. Kroqumicy noise of the local oscillator aL ovoti harmonies of the nmdulatirm frequency is known to contribute to the short-turrii instability of passive frequency sLnricifivdK [1]-[3], The moclianism by wtiicli tliiij noise trtuisfor takes place in Rb-cell standard is described here in a comprehensive approach that melticluK both signal theory methods [3] tmcl n tinie-tlcpcnclcnt quantum mechan-ical analysis. The resulting calculated transfer cocfUcionts fiir the various oven ha.rrntmic:s HFCJ discussed in relationship with measured coefficients in an actnal experiment [2]. © 2000 IEEE.