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Power amplifier with power feedback

  • US 8,344,806 B1
  • Filed: 09/29/2010
  • Issued: 01/01/2013
  • Est. Priority Date: 09/29/2009
  • Status: Active Grant
First Claim
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1. A power amplifier system, comprising:

  • a main signal path;

    one or more power control ports;

    a baseband current sensor;

    a baseband voltage sensora power control block driven by an output power estimator block based on at least one of, a linear and a higher order summation of a sensed output voltage and current signals from the baseband current and voltage sensors, the baseband current and voltage sensors providing baseband sensing when the voltage and current are already in their envelope form and summation without multiplication, the voltage and current sensors directly driving the output power estimator block.

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