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Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals

  • US 20050162226A1
  • Filed: 04/22/2003
  • Published: 07/28/2005
  • Est. Priority Date: 04/30/2002
  • Status: Active Grant
First Claim
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1. An apparatus comprising a high-frequency signal amplifier formed by a main power stage which has an incoming signal input, an output for an amplified signal and a gain control, also comprising a first comparator for producing a signal having a distortion level between the incoming signal and the amplified signal and a differential element for removing the distortion signal from the amplified signal, characterized in that the differential element co-operates with an auxiliary amplifier stage which is inserted into a canceling loop for producing a constant-power distortion canceling signal.

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