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Dynamic error vector magnitude duty cycle correction

  • US 9,825,591 B2
  • Filed: 10/13/2016
  • Issued: 11/21/2017
  • Est. Priority Date: 09/19/2013
  • Status: Active Grant
First Claim
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1. A power amplifier module comprising:

  • a power amplifier configured to amplify a radio frequency signal;

    a low pass filter configured to generate a correction signal based at least partly on an indication of a duty cycle of the power amplifier; and

    a bias circuit configured to generate a bias signal based at least partly on the correction signal such that changes in the bias signal are inversely proportional to changes in the duty cycle of the power amplifier, and the bias circuit configured to bias the power amplifier using the bias signal.

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