Tuesday, March 01, 2011 11:23:48 AM
Sugar , et al. March 1, 2011
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Control of power amplifiers in devices using transmit beamforming
Abstract
A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plurality of power amplifiers is controlled to operate with one or more operating parameters that optimize the efficiency for an output power level of corresponding ones of the radio frequency signals. Transmit weights for transmit signals are determined and updated on a per-packet basis.
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Inventors: Sugar; Gary L. (Rockville, MD), Vaidyanathan; Chandra (Bethesda, MD), Luo; Sifen (Potomac, MD)
Assignee: IPR Licensing, Inc. (Wilmington, DE)
Appl. No.: 12/506,813
Filed: July 21, 2009
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
11326630 Jan., 2006 7565117
10867249 Jan., 2006 6993299
10249063 Mar., 2005 6871049
60365797 Mar., 2002
60365775 Mar., 2002
60365811 Mar., 2002
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Current U.S. Class: 455/103
Current International Class: H04B 1/04 (20060101)
Field of Search: 455/101,103,104,114.1,115.1,127.1,562.1 375/267,296,297
PPP
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