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Methods and apparatus for substantially reducing third order intermodulation distortion and other nonlinear distortions

  • US 20040169559A1
  • Filed: 03/05/2004
  • Published: 09/02/2004
  • Est. Priority Date: 03/19/2002
  • Status: Active Grant
First Claim
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1. An apparatus for substantially reducing nonlinear distortion, the apparatus comprising:

  • an input coupling means having an input and first and second outputs, the input coupling means capable of splitting an input signal into first and second coupled signals that are in-phase with respect to each other;

    a first nonlinear device having an input in communication with the first output of the input coupling means and an output;

    a second nonlinear device having an input in communication with the second output of the input coupling means and an output; and

    a subtractor having a first input in communication with the output of the first nonlinear device, a second input in communication with the output of the second nonlinear device and an output, wherein the subtractor is capable of subtracting an output signal of the second nonlinear device from an output signal of the first nonlinear device to generate a final output signal.

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