METHOD AND SYSTEM OF CALIBRATION OF A SECOND ORDER INTERMODULATION INTERCEPT POINT OF A RADIO TRANSCEIVER

摘要

The method of calibration of a second order intermodulation intercept point (IIP2) of a radio transceiver comprises the steps of:
- Generating a second order intermodulation (IM2) reference signal (S TXIM2-REF ) from a transmission baseband signal (S TXBB-REF );
- Estimating a second order intermodulation power from the second order intermodulation reference signal (S TXIM2-REF ) and a radio transceiver output signal (Output);
- Tuning a second order intermodulation intercept point tuner to find a lowest second order intermodulation power;
- Extracting an optimum second order intermodulation intercept point corresponding to the lowest second order intermodulation power.