ACTIVE ANTENNA ARRAY HAVING ANALOGUE TRANSMITTER LINEARISATION 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
status (Latency Note)
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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 plurality of 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 predistorter and a coupler; and a plurality of feedback paths connected between an individual one of the couplers and an individual one of the predistorters, wherein an individual one of the plurality of feedback paths comprises a predistorter coefficient calculation unit. A method for predistorting radio signals is also disclosed.
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