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DIGITAL PREDISTORTION FOR DUAL-BAND POWER AMPLIFIERS

  • US 20160308577A1
  • Filed: 06/24/2016
  • Published: 10/20/2016
  • Est. Priority Date: 04/17/2013
  • Status: Active Grant
First Claim
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1. A signal processing circuit arrangement comprising:

  • a preamplifier circuit configured to;

    map a first dimension input and a second dimension input to a first subset of a plurality of lookup table coefficients of a two-dimensional (2D) lookup table, wherein the first dimension input and the second dimension input each represent a signal level of one or more input signals;

    extrapolate from the first subset of the plurality of lookup table coefficients to generate a lookup table output; and

    apply the lookup table output to the one or more input signals to generate a predistorted input signal for an amplifier.

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