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Predistorter for compensating linearity of an amplifier

  • US 10,381,987 B2
  • Filed: 11/06/2017
  • Issued: 08/13/2019
  • Est. Priority Date: 02/15/2017
  • Status: Active Grant
First Claim
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1. A predistorter for compensating linearity of an amplifier, the predistorter comprising:

  • a first capacitor having a first end coupled to a first node of the amplifier;

    a first bias input circuit configured to receive a first bias; and

    an impedance conversion circuit configured to perform an impedance conversion to provide a variable capacitance, the impedance conversion circuit comprising;

    a bipolar junction transistor (BJT) having a base coupled to an output end of the first bias input circuit and a second end of the first capacitor, a collector being floating, and an emitter coupled to a second node of the amplifier.

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