PLL with low spurs

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C327S147000

Reexamination Certificate

active

07541850

ABSTRACT:
A PLL circuit having a low spur output. The PLL circuit includes a PFD (Phase-Frequency Detector), a charge-pump coupled to the PFD, an SCR (switch-capacitor resistor) coupled to the charge pump, a filter coupled to the SCR, and a VCO circuit coupled to the filter, wherein the SCR reduces an amplitude of a plurality of current pulses at an output of the charge-pump before the plurality of current pulses reach an input of the VCL circuit.

REFERENCES:
patent: 5410263 (1995-04-01), Waizman
patent: 6420917 (2002-07-01), Klemmer
patent: 7145400 (2006-12-01), Horan
patent: 2007/0096835 (2007-05-01), Chien

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

PLL with low spurs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PLL with low spurs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PLL with low spurs will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4148040

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.