Patent ID: 7113046

Claim:
An apparatus for delivering a standard frequency signal based on a response of an atomic resonator to a driver signal applied thereto, the apparatus comprising: a first oscillator for producing a first signal of a frequency that is a function of a response signal from the atomic resonator; a second oscillator for producing a second signal of a frequency equal to an integer multiple of the frequency of the first signal, as a function of a control signal; phase servo-control means for servo-controlling a phase of the second signal on the first signal, thereby producing the control signal; generator means for generating the driver signal of the atomic resonator from the second signal; and delivery means for directly delivering at least one standard frequency signal from the first signal, wherein said phase servo-control means includes a logical frequency divider circuit that divides the second signal by the integer multiple, a phase comparator circuit that compares the phase of the first signal to the phase of an output from said logical frequency divider circuit, and a control signal generator circuit that generates the control signal for said second oscillator from an output from said phase comparator circuit.