Oscillator frequency locking and prepositioning circuit

Details Oscillator frequency locking and prepositioning circuit Oscillator frequency locking and prepositioning circuit

1989-01-19

1989-11-14

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With intermittent comparison controls

331 16, 331 18, H03L 702, H03L 716

Patent

active

048810487

ABSTRACT:
A frequency locking device, with pre-positioning in which an oscillator is controlled by the output of a frequency discriminator. Shifts in the frequency discriminator are removed by performing calibrations on this discriminator through two signals with known frequencies Fo and F1 produced by a generator. The signal resulting from this calibration is used to prepare a reference voltage for a digital/analog converter which also receives a digital oscillator control signal and which then produces a voltage representing the control voltage of the oscillator.

REFERENCES:
patent: 3274511 (1966-09-01), Dale et al.
patent: 3297965 (1967-01-01), Chadima, II

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