Frequency synthesizer with learning circuit

Details Frequency synthesizer with learning circuit Frequency synthesizer with learning circuit

1980-12-31

1983-10-18

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 17, 331 25, H03L 718

Patent

active

044108605

ABSTRACT:
A frequency synthesizer of the phase-locked loop type, having an output circuit circuit which produces an output signal at any of a plurality of alternating frequency values depending on the value of a command signal applied to the output circuit. The synthesizer includes a storage apparatus for storing, for each frequency value, an indication of the precise command signal value which causes the frequency to be produced. When the frequency is again to be produced the stored signal is used to rapidly drive the output circuit to produce the desired frequency

REFERENCES:
patent: 3675146 (1972-07-01), Langham
patent: 3753142 (1973-08-01), Nardin et al.
patent: 3927384 (1975-12-01), Jezo
patent: 4272729 (1981-06-01), Riley

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