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PA envelope power supply undershoot compensation

  • US 8,706,063 B2
  • Filed: 11/28/2011
  • Issued: 04/22/2014
  • Est. Priority Date: 04/20/2010
  • Status: Active Grant
First Claim
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1. Circuitry comprising:

  • a power amplifier (PA) envelope power supply adapted to provide an envelope power supply signal based on an envelope control signal;

    control circuitry adapted to;

    determine if a step change of the envelope control signal from a high magnitude to a low magnitude exceeds a step change limit;

    if the step change exceeds the step change limit, modify the envelope control signal by using an intermediate magnitude for a period of time, wherein the intermediate magnitude is between the high magnitude and the low magnitude; and

    if the step change does not exceed the step change limit, do not modify the envelope control signal.

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