Methods and apparatus for digital frequency generation in atomic

Details Methods and apparatus for digital frequency generation in atomic Methods and apparatus for digital frequency generation in atomic

1994-12-19

1998-02-03

Pascal, Robert

Oscillators

Automatic frequency stabilization using a phase or frequency...

Molecular resonance stabilization

331 941, H03L 726

Patent

active

057149100

ABSTRACT:
A physics package interrogation signal can be digitally synthesized for use in an atomic frequency standard with one or more sets of integrally-related sub-multiples of a clock frequency in which one of the integrally-related sub-multiple frequencies is varied to provide frequency modulation between integrally-adjacent sub-multiple frequencies through the use of preloadable counters, the controlled delay and the synchronization of digital pulse trains and operation in plural modes. The method and apparatus can reduce false lock possibilities, optimize the ability of the physics package to remain locked, and reduce phase noise in the output of an atomic frequency standard.

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patent: 4476445 (1984-10-01), Riley
patent: 4692716 (1987-09-01), De Marchi et al.
patent: 4740761 (1988-04-01), Barnes et al.
Detoma et al., Proceedings of the 6th European Frequency and Time Forum, 17-19 Mar. 1992, ESA SP-340, European Space Agency, pp. 457-469.

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