Oscillators – Automatic frequency stabilization using a phase or frequency... – Molecular resonance stabilization
Patent
1981-07-17
1984-05-01
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Molecular resonance stabilization
331 8, 331 16, 331 25, 331 36C, 331 941, 331117FE, 331117V, H03L 718, H03L 726
Patent
active
044464460
ABSTRACT:
An adjustable frequency synthesizer primarily for use in an atomic frequency standard of the type used for stabilizing a frequency source by locking it to the hyperfine transition resonance of an atomic frequency resonator. The synthesizer is programmable by an externally applied code to provide the proper frequency, electromagnetic resonance field to the atomic frequency resonator. The synthesizer also provides a phase locked frequency modulating signal to produce the resonance deviation signal in the resonator. The broad range and fine frequency increments of the synthesizer permit accommodation of a wide range of resonance frequencies in the atomic frequency resonator to obviate resonator gas pressure and magnetic field variations which would otherwise decrease the production yield of such resonators.
REFERENCES:
patent: 4249138 (1981-02-01), Bell
patent: 4314208 (1982-02-01), Munday
Anon., "Rubidium Frequency Standard 5065A," Specification Sheet, Hewlett-Packard, Mar. 1968.
Bachand Richard A.
Grimm Siegfried H.
Hamann H. Fredrick
Paxman W. R.
Rockwell International Corporation
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