Method and system for frequency feedback adjustment in...

Details Method and system for frequency feedback adjustment in... Method and system for frequency feedback adjustment in...

2009-09-21

2011-11-01

Mehrpour, Melody (Department: 2617)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

Reexamination Certificate

active

08050647

ABSTRACT:
In RF transceivers, a method and a system for a frequency feedback adjustment in digital receivers are provided. A DC offset may result from the difference in frequencies between an RF transmitter and an RF receiver. An adjustment of the receiver's frequency may be implemented after synchronization occurs and may be performed by, for example, utilizing a header portion of a packet communicated via a wireless interface. The adjustment may be performed when the frequency difference exceeds a threshold value. In another aspect, adjusting the frequency of the RF receiver may be performed by modifying and/or changing a phase locked loop (PLL) trimmer register. This approach may allow an RF receiver to operate, in some instances, without the need for an equalizer. In this regard, the power consumed by the RF receiver may be minimized and/or the overall cost of the RF receiver may be reduced.

REFERENCES:
patent: 4803703 (1989-02-01), DeLuca et al.
patent: 5001724 (1991-03-01), Birgenheier et al.
patent: 5365187 (1994-11-01), Hornak et al.
patent: 5499393 (1996-03-01), Fukui
patent: 5559841 (1996-09-01), Pandula
patent: 5699386 (1997-12-01), Measor et al.
patent: 5930307 (1999-07-01), Deluca
patent: 5940744 (1999-08-01), Uda
patent: 6104238 (2000-08-01), Mattisson et al.
patent: 6314278 (2001-11-01), Zamat
patent: 6498929 (2002-12-01), Tsurumi et al.
patent: 6577229 (2003-06-01), Bonneau et al.
patent: 6600378 (2003-07-01), Patana
patent: 6643336 (2003-11-01), Hsieh et al.
patent: 6690740 (2004-02-01), Mattisson et al.
patent: 6694131 (2004-02-01), Lakkis
patent: 6728277 (2004-04-01), Wilson
patent: 6819910 (2004-11-01), Shi et al.
patent: 6850745 (2005-02-01), Anand et al.
patent: 6851493 (2005-02-01), Staszewski et al.
patent: 6891440 (2005-05-01), Straub et al.
patent: 6931051 (2005-08-01), Nafie et al.
patent: 6947495 (2005-09-01), Ezquerra-Moreu et al.
patent: 6999744 (2006-02-01), Kim
patent: 7079595 (2006-07-01), Jensen et al.
patent: 7110469 (2006-09-01), Shi et al.
patent: 7116729 (2006-10-01), Ibrahim et al.
patent: 7164329 (2007-01-01), Toncich et al.
patent: 7190740 (2007-03-01), Chu et al.
patent: 7382200 (2008-06-01), Staszewski et al.
patent: 7599662 (2009-10-01), Ibrahim et al.
patent: 7684519 (2010-03-01), Kim et al.
patent: 2001/0053176 (2001-12-01), Fry et al.
patent: 2002/0094052 (2002-07-01), Staszewski et al.
patent: 2002/0114303 (2002-08-01), Crosbie et al.
patent: 2002/0116460 (2002-08-01), Treister et al.
patent: 2002/0136268 (2002-09-01), Gan et al.
patent: 2002/0160738 (2002-10-01), Allott et al.
patent: 2003/0058964 (2003-03-01), Ezquerra-Moreu et al.
patent: 2003/0076901 (2003-04-01), Yuan et al.
patent: 2003/0078037 (2003-04-01), Auckland et al.
patent: 2003/0091127 (2003-05-01), Jensen et al.
patent: 2003/0161413 (2003-08-01), Jensen et al.
patent: 2003/0194984 (2003-10-01), Toncich et al.
patent: 2003/0197810 (2003-10-01), Jaffe
patent: 2003/0202619 (2003-10-01), Ibrahim et al.
patent: 2003/0203728 (2003-10-01), Filipovic
patent: 2004/0073127 (2004-04-01), Istvan et al.
patent: 2004/0081256 (2004-04-01), Shi et al.
patent: 2004/0146122 (2004-07-01), Fague et al.
patent: 2004/0179429 (2004-09-01), Preston
patent: 2005/0009491 (2005-01-01), Anand et al.
patent: 2005/0031055 (2005-02-01), Ernst
patent: 2005/0043001 (2005-02-01), Toncich et al.
patent: 2005/0164639 (2005-07-01), Suissa et al.
patent: 2005/0186933 (2005-08-01), Trans
patent: 2005/0197064 (2005-09-01), Ibrahim et al.
patent: 2005/0250459 (2005-11-01), Tervaluoto et al.
patent: 2006/0093081 (2006-05-01), Ibrahim et al.
patent: 2006/0153316 (2006-07-01), Payne et al.
patent: 2006/0262836 (2006-11-01), Yuan et al.
patent: 2007/0216551 (2007-09-01), Yuan et al.
patent: 2008/0214112 (2008-09-01), Ibrahim et al.
patent: 1416223 (2003-05-01), None
patent: 1271872 (2001-06-01), None
patent: WO 03/065568 (2003-08-01), None
Bluetooth, “Specification of the Bluetooth System, Core System Package, (Controller Volume)”, Version 1.2, Nov. 5, 2003, Specification vol. 2, pp. 97-132.
Communication with European Search Report relating to Application No. EP05017631, mailed May 2, 2011, 6 pages.

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