ACTIVE ANTENNA ARRAY HAVING A SINGLE DPD LINEARISER AND A METHOD FOR PREDISTORTION OF RADIO SIGNALS
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United States of America Patent
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Issued Date -
Sep 29, 2011
app pub date -
Mar 26, 2010
filing date -
Mar 26, 2010
priority date (Note) -
Abandoned
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Abstract
An active antenna array comprises: a digital signal processor connected to a plurality of digital-to-analogue conversion blocks; a plurality of antenna elements; a plurality of transmission paths, whereby an individual one of the plurality of transmission paths is connected between an individual one of the digital-to-analogue conversion blocks and an individual one of the plurality of antenna elements, whereby an individual one of the plurality of transmission paths comprises a correction signal combiner and a feedback coupler; a plurality of paths connected between individual ones of the feedback couplers and a single feedback combiner; a single feedback path connected between the single feedback combiner and a correction signal calculation unit; and a single correction signal path connected between the correction signal calculation unit and at least two of the correction signal combiners.A method for predistortion of radio signals in the active antenna array is also disclosed.
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