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ADAPTIVE IIP2 CALIBRATION

  • US 20100093298A1
  • Filed: 10/09/2008
  • Published: 04/15/2010
  • Est. Priority Date: 10/09/2008
  • Status: Active Grant
First Claim
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1. An input-related, second-order intercept point (IIP2) calibration system for a receiver of a transceiver including a transmitter, comprising:

  • an estimator, coupled to a transmitter of a transceiver and to a receiver of the transceiver, for calculating an estimate of second-order intermodulation distortion in the receiver as a result of second-order intermodulation distortion occurring in a mixer of the receiver, wherein the estimator uses a live transmit signal from the transmitter as reference signal; and

    a controller, coupled to the estimator, for adjusting an IIP2 tuning port of the mixer, based on the estimate of second-order intermodulation distortion in the receiver, to reduce second-order intermodulation distortion in the receiver.

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