Complex digital phase locked loop for use in a demodulator...

Pulse or digital communications – Receivers – Angle modulation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S326000, C375S373000, C375S376000

Reexamination Certificate

active

07826564

ABSTRACT:
A complex digital phase locked loop for use in a digital demodulator includes a phase detector for producing a phase error indicative of a difference in phase between a complex digital input signal and a complex digital feedback signal. The phase error is input to a controller, which multiplies the phase error by a gain factor selected to stabilize and optimize the phase locked loop and produces an output signal for use in extracting a frequency deviation present in the complex digital input signal. The output signal is also input to a numerically controlled oscillator that tracks the phase of the complex digital input signal based on the output signal and produces the complex digital feedback signal.

REFERENCES:
patent: 5912930 (1999-06-01), Iwasaki
patent: 6310513 (2001-10-01), Iemura

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

Complex digital phase locked loop for use in a demodulator... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Complex digital phase locked loop for use in a demodulator..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complex digital phase locked loop for use in a demodulator... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4156754

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