Mitigating fractional spurs in fractional-N frequency...

Details Mitigating fractional spurs in fractional-N frequency... Mitigating fractional spurs in fractional-N frequency...

2008-05-13

2009-12-22

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C455S260000

Reexamination Certificate

active

07636020

ABSTRACT:
One embodiment of the present invention sets forth a technique for mitigating fractional spurs in fractional-n frequency synthesizer circuits. The technique involves advantageously modifying certain least significant bit values in the programming bits of the fractional-n frequency synthesizer circuit to avoid pathological fractional bit patterns. As a result, fractional spurs present in conventional fractional-n frequency synthesizer circuits may be attenuated, thereby improving the overall quality of the resulting out signal.

REFERENCES:
patent: 7283002 (2007-10-01), Puma et al.

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