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Method and apparatus for controlling the output power of a power amplifier

  • US 7,106,137 B2
  • Filed: 06/30/2004
  • Issued: 09/12/2006
  • Est. Priority Date: 03/04/2003
  • Status: Active Grant
First Claim
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1. A method of controlling the output power of a power amplifier comprising:

  • sensing the power amplifier supply voltage;

    sensing the power amplifier supply current;

    while the output voltage of the power amplifier is below a threshold level, using the sensed power amplifier supply current to regulate the supply current of the power amplifier to maintain a desired power amplifier output power level; and

    while the output voltage of the power amplifier is above a threshold level, using the sensed power amplifier supply voltage to regulate the supply voltage of the power amplifier to maintain a desired power amplifier output power level.

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