Frequency synthesizer incorporating vernier phase adjuster

Details Frequency synthesizer incorporating vernier phase adjuster Frequency synthesizer incorporating vernier phase adjuster

1991-07-09

1993-10-26

Ng, Jin F.

328155, H03B 1900, H03K 513

Patent

active

052569802

ABSTRACT:
A frequency synthesizer for producing an output whose phase and/or frequency can be finely adjusted under digital control. The synthesizer utilizes a phase lock loop including a phase detector responsive to a prescale divide-by-N frequency divider and a feedback divide-by-M frequency divider to product an output signal F.sub.OUT. The phase of F.sub.OUT can be shifted by a small increment by slightly adjusting the values of the divisors M and N.

REFERENCES:
patent: 3958186 (1976-05-01), Jesse et al.
patent: 4234929 (1980-11-01), Riley, Jr.
patent: 4490688 (1984-12-01), Borras et al.
patent: 4893094 (1990-01-01), Herold et al.
patent: 5128632 (1992-07-01), Erhard et al.

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