Pulse or digital communications – Receivers
Reexamination Certificate
2008-02-11
2011-10-04
Ha, Dac (Department: 2611)
Pulse or digital communications
Receivers
C346S037000, C348S729000, C370S203000, C455S226100, C455S226200, C455S243100
Reexamination Certificate
active
08031808
ABSTRACT:
A wireless receiver detects signals received at two or more antennas, with each antenna coupled to an input receive chain. A switch is employed to couple selected input receive chains to one or more corresponding output receive chains during listening, coarse-detection, and fine-adjustment modes. At least one channel selection filter (CSF) is employed in each output receive chain, and the receiver employs sub-ranging. During idle mode, one antenna's input receive chain is connected to two or more CSFs to detect the packet. When the packet is detected, during a coarse-adjustment mode, the CSFs are reconfigured to couple each antenna's input receive chain to a corresponding output receive chain using low-gain signals. During fine-adjustment mode, the various gains are adjusted to be either high- or low-gain to maintain signals within the dynamic range of the corresponding CSFs.
REFERENCES:
patent: 5933770 (1999-08-01), Heiter
patent: 6134430 (2000-10-01), Younis et al.
patent: 6847628 (2005-01-01), Sakuma
patent: 6871052 (2005-03-01), Spencer et al.
patent: 7031413 (2006-04-01), Doi
patent: 2003/0027538 (2003-02-01), Masumoto et al.
patent: 2003/0220089 (2003-11-01), Chang et al.
patent: 2004/0063412 (2004-04-01), Kim et al.
patent: 2005/0141407 (2005-06-01), Sandhu
patent: 2002314357 (2002-10-01), None
Non-Final office action received in U.S. Appl. No. 10/847,431, filed May 17, 2004, dated Aug. 21, 2006.
Final office action received in U.S. Appl. No. 10/847,431, filed May 17, 2004, dated Feb. 22, 2007.
Advisory Action received in U.S. Appl. No. 10/847,431, filed May 17, 2004, dated May 16, 2007.
Non-Final office action received in U.S. Appl. No. 10/847,431, filed May 17, 2004, dated Jul. 26, 2007.
Notice of Allowability received in U.S. Appl. No. 10/847,431, filed May 17, 2004, dated Dec. 14, 2007.
Partial European Search Report from corresponding European Application No. EP 05253015; Mail Date: Mar. 31, 2011 (7 pages).
Japanese Examiner's Office Letter from corresponding Japanese Patent Application No. 2005-143567; Mail Date: Mar. 7, 2011 (9 pages).
Hammerschmidt Joachim S.
Manstretta Danilo
Agere Systems Inc.
Drucker Kevin M.
Dsouza Adolf
Ha Dac
Mendelsohn Steve
LandOfFree
Multiple-branch wireless receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple-branch wireless receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple-branch wireless receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4294743