Circuit and method for compensating for nonliner distortion of power amplifier

Circuit and method for compensating for nonliner distortion of power amplifier

  • CN 1,523,751 A
  • Filed: 02/17/2004
  • Published: 08/25/2004
  • Est. Priority Date: 02/21/2003
  • Status: Active Application
First Claim
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1. nonlinear distortion compensation circuit comprises:

  • Power calculator is used to calculate the performance number of input signal;

    The working point is provided with the unit, be used for based on offering a kind of relation that this working point is provided with the unit in advance, promptly be used to amplify the relation between the temperature of the I/O characteristic of power amplifier of described input signal and this power amplifier, calculate apparent performance number from providing from the performance number that temperature information and described power calculator calculated of external source, described temperature information is represented the measurement temperature of described power amplifier;

    Contrary property calculation device, be used for the contrary composition that the apparent power value of calculating the unit is calculated the nonlinear distortion that is caused by described power amplifier being set from contrary performance data and described working point, described contrary performance data is offered described contrary property calculation device in advance, and relevant with the caused nonlinear distortion of described power amplifier;

    WithComplex multiplier is used for the contrary composition that described contrary property calculation device the is calculated described input signal that is added to.

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