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Linearization Circuits And Methods For Multilevel Power Amplifier Systems

  • US 20140118065A1
  • Filed: 10/28/2013
  • Published: 05/01/2014
  • Est. Priority Date: 10/30/2012
  • Status: Active Grant
First Claim
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1. A system having an input and an RF output, the system comprising:

  • one or more RF amplifiers each having an RF input, an RF output, and a power supply input;

    a voltage control unit coupled to provide a power supply voltage to the power supply input of at least one of the one or more RF amplifiers wherein the voltage control unit dynamically selects the power supply voltage from among different inputs or levels based in part upon one or more signal characteristics of a signal to be amplified; and

    a linearization unit to improve the linearity of the system by predistorting the RF input to at least one of the one or more RF amplifiers.

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