Patent ID: 8219078

Claim:
A method of calibrating a transceiver for wireless communication comprising at least one transmitter/receiver pair connected to an antenna branch, such that front-end mismatches in the transmitter/receiver pair can be compensated, the method comprising: matching outputs of a power splitter between branches of a transceiver, matching directional couplers, and matching transmit/receive/calibration switches between antenna branches of the transceiver; switching on a calibration connection of the transmit/receive/calibration switch; in each of the antenna branches generating a known signal and calculating an averaged frequency response of a cascade of a transmitter and the receiver of a transmitter/receiver pair; connecting the transmit/receive/calibration switch so as to isolate the receiver from both the transmitter and an antenna; switching on a calibration noise source; calculating an averaged frequency response of the receiver branches of the transceiver; determining values to be pre-compensated from the calculated averaged frequency responses of the cascade of the transmitter and the receiver of the transmitter/receiver pair and of the receiver branches of the transceiver; and pre-compensating the transmitter/receiver pair using the inverse of the values.