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DC-DC conversion for a power amplifier using the RF input

  • US 8,258,875 B1
  • Filed: 09/29/2010
  • Issued: 09/04/2012
  • Est. Priority Date: 09/29/2009
  • Status: Active Grant
First Claim
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1. A power amplifier system, comprising:

  • a power amplifier configured to receive an RF input;

    a DC-DC converter coupled to the power amplifier; and

    clocking circuits that drives the DC-DC converter, the clocking circuits using the RF input to generate a clock, the clock acting with the DC-DC converter to provide an output voltage used in the power amplifier, wherein divider ratios are changed to change a frequency of the clock to minimize interference.

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