Fractional-N frequency synthesizer using delta-sigma modulator i

Details Fractional-N frequency synthesizer using delta-sigma modulator i Fractional-N frequency synthesizer using delta-sigma modulator i

1990-11-21

1992-01-07

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 16, 331 25, 377 48, H03L 7197

Patent

active

050795210

ABSTRACT:
A fractional-N frequency synthesizer having a programmable divider and a control circuit therefor, wherein said control circuit incorporates a digital delta-sigma modulator operating as an interpolator.

REFERENCES:
patent: 4179670 (1979-12-01), Kingsbury
patent: 4965531 (1990-10-01), Riley

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