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Power amplifier array with same type predistortion amplifier

  • US 6,646,505 B2
  • Filed: 03/26/2002
  • Issued: 11/11/2003
  • Est. Priority Date: 03/26/2002
  • Status: Expired due to Fees
First Claim
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1. A power amplifier circuit, comprising:

  • an input for receiving a carrier signal;

    an array of combined amplifiers of a predetermined type for amplifying the carrier signal;

    at least one amplifier of the predetermined type that is located between the input and the array of combined amplifiers for amplifying the carrier signal to produce a predistorted carrier signal to compensate for nonlinearities introduced by the array of combined amplifiers before the carrier signal is input into the array of combined amplifiers; and

    a phase and gain adjuster for canceling a carrier signal component from the predistorted carrier signal and for inverting distortion caused by the at least one amplifier of the predetermined type to compensate for nonlinearities caused by the amplifier array.

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