Control of power amplifiers in devices using transmit beamforming
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United States of America Patent
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Mar 1, 2011
Grant Date -
Nov 19, 2009
app pub date -
Jul 21, 2009
filing date -
Mar 21, 2002
priority date (Note) -
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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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