| 摘要 |
A highly stable frequency generator (G) comprises an oscillator (10) for generating a first frequency (F1), and further comprises a time base (BT) providing a time stable frequency signal which is independent of the temperature, and a feedback circuit arranged to provide a first number of pulses (nT) coming from the oscillator (10) to a comparing circuit (13), a circuit (14) for providing a reference number of pulses (NT) to said comparing circuit (13), and a circuit (13,15,16) providing a correction signal (Sc) as a function of the difference ( DELTA ) between the first number (nT) and the reference number (NT), the generator (G) further comprising a correction circuit (17) of the oscillation frequency (F1) of said first oscillator (10), this correction circuit being controlled by said control signal (Sc).
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