发明名称 Method and apparatus for a cartesian error feedback circuit to correct distortion within a power amplifier
摘要 A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
申请公布号 US7689180(B2) 申请公布日期 2010.03.30
申请号 US20070798566 申请日期 2007.05.15
申请人 SIGE SEMICONDUCTOR INC. 发明人 GRUNDLINGH JOHAN;SMITH HOWARD JAMES;NISBET JOHN;RABJOHN GORDON G.
分类号 H04B1/04 主分类号 H04B1/04
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