Fractional-N synthesizer system and method

Details Fractional-N synthesizer system and method Fractional-N synthesizer system and method

2008-01-08

2008-01-08

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S018000, C331S002000, C331S034000, C375S376000

Reexamination Certificate

active

07317360

ABSTRACT:
A fractional-N synthesizer system including a plurality of fractional-N synthesizers all updated to simultaneously generate an output frequency from the same reference frequency, a phase locked loop having an output signal whose frequency is a fractional multiple of the input reference frequency; the phase locked loop including a frequency divider, an interpolator responsive to an input fraction to provide to the frequency divider an output which has a fractional value equal to on average, the input fraction; and a timeout circuit responsive to the reference frequency for generating an output a predetermined time after updating to initialize the interpolator in each synthesizer to the same start conditions for locking together the phase of the frequency outputs of all of the synthesizers at the updated frequency.

REFERENCES:
patent: 6556086 (2003-04-01), Keaveney et al.
patent: 2003/0020550 (2003-01-01), Nelson et al.
patent: 2004/0264622 (2004-12-01), Walsh et al.

Affiliated with

Also associated with

Rating

Fractional-N synthesizer system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fractional-N synthesizer system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fractional-N synthesizer system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2804054