Method and apparatus for matching receiver carrier frequency

Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S258000, C455S265000, C455S192100, C455S192300, C375S326000, C375S344000, C375S375000

Reexamination Certificate

active

07099642

ABSTRACT:
A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to downconvert a received signal. An analog frequency reference having a wide frequency range and coarse frequency resolution is used in conjunction with a digital frequency reference having a narrow frequency range and fine frequency resolution. The multiple carrier signals are multiplied by a received signal to effect a multi-stage downconversion, resulting in a baseband signal. A frequency tracking module measures the residual frequency error present in the baseband signal. The measured residual frequency error is then used to adjust the frequencies of the carrier signals generated by the multiple frequency generation sources.

REFERENCES:
patent: 5487186 (1996-01-01), Scarpa
patent: 5533050 (1996-07-01), Isard et al.
patent: 5712869 (1998-01-01), Lee et al.
patent: 5995563 (1999-11-01), Ben-Efraim et al.
patent: 6192088 (2001-02-01), Aman et al.
patent: 6317067 (2001-11-01), Mohindra
patent: 6351506 (2002-02-01), Lewicki
patent: 2003/0026362 (2003-02-01), Kimura
patent: 2003/0027537 (2003-02-01), Kimura
patent: 0689324 (1995-12-01), None
patent: 01054944 (1989-02-01), None

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

Method and apparatus for matching receiver carrier frequency does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for matching receiver carrier frequency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for matching receiver carrier frequency will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3648398

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