H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
H03L7/00—Automatic control of frequency or phase; Synchronisation
H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
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Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers
(AREA)