发明名称 HIGH EFFICIENCY AMPLIFICATION
摘要 There is disclosed a radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.
申请公布号 WO2004075398(A1) 申请公布日期 2004.09.02
申请号 WO2003GB04507 申请日期 2003.10.17
申请人 NUJIRA LTD.;WILSON, MARTIN PAUL 发明人 WILSON, MARTIN PAUL
分类号 H03F1/02 主分类号 H03F1/02
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