Phase-locked loop including non-linear phase detector of the sam

Details Phase-locked loop including non-linear phase detector of the sam Phase-locked loop including non-linear phase detector of the sam

1981-02-12

1983-07-05

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With intermittent comparison controls

331 8, 331 27, 331 36C, 307353, H03L 708

Patent

active

043921132

ABSTRACT:
A non-linear phase detector is disclosed which compensates for gains occuring during tuning a frequency generator of a known phase locked loop circuit which incorporates a Varactor tuned resonant circuit as a VCO. The phase detector is of the sample and hold type and incorporates a Varactor rather than a hold capacator to compensate for non-linear gains which occur when tuning the frequency generator across its band spread. Additionally, bias compensation is provided for the resonant circuit Varactor to offset its contact potential.

REFERENCES:
patent: 3538450 (1970-11-01), Andrea et al.
patent: 3681706 (1972-08-01), Harzer
patent: 3863174 (1975-01-01), Klinger
Underhill et al., "Fast Digital Frequency Synthesizer", Electronics Letters, 25th May 1978, vol. 14, No. 11, pp. 342-343.
Underhill et al., "Split-Loop Method for Wide-Range Frequency Synthesizer with Good Dynamic Performance", Electronics Letters, Jun. 21, 1979, vol. 15, No. 13, pp. 391-393.

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