Review of self tuning methods for direct conversion transceivers

Abstract

Integrated circuit fabrication technological processes affect error of transceiver's components, thus aims to minimize such deviation. This paper analyzes modern wireless transceiver calibration methods: feedforward, feedback, hybrid and indirect. Main parameters to calibrate are: I/Q gain and phase imbalance, DC offset and second order input intercept point. For first time, relations between transceiver parameters, parameters to be calibrated and calibration methods are proposed.