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Communications based adjustments of a parallel amplifier power supply

  • US 9,300,252 B2
  • Filed: 01/24/2014
  • Issued: 03/29/2016
  • Est. Priority Date: 01/24/2013
  • Status: Active Grant
First Claim
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1. An envelope tracking power supply having an envelope tracking power supply output and comprising:

  • a parallel amplifier power supply configured to provide a parallel amplifier power supply signal, which is configured to be adjustable on a communications slot-to-communications slot basis;

    a parallel amplifier having a parallel amplifier output, which during envelope tracking, is configured to regulate an envelope power supply voltage based on the parallel amplifier power supply signal; and

    switching circuitry having a switching circuitry output, wherein;

    an offset capacitive element is directly coupled between the parallel amplifier output and the envelope tracking power supply output; and

    a first inductive element is coupled between the switching circuitry output and the envelope tracking power supply output.

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