Patent ID: 7616929

Claim:
A Radio Frequency (RF) transceiver comprising: a first RF transceiver group having an RF transmitter and an RF receiver; a second RF transceiver group having an RF transmitter and an RF receiver; local oscillation circuitry operable to selectively produce local oscillations to the first RF transceiver group and to the second RF transceiver group; and calibration control circuitry operable to initiate calibration operations that include: transmitter self calibration operations to determine transmitter calibration settings for the RF transmitter of the first RF transceiver group and for the RF transmitter of the second RF transceiver group, the transmitter self calibration operations using an internal feedback path that is separate from the RF receivers to calibrate the RF transmitters; first loopback calibration operations during which the RF transmitter of the second RF transceiver group is active and the RF receiver of the first RF transceiver group is active to determine receiver calibration settings for the RF receiver of the first RF transceiver group, the first loopback calibration operations being performed only after calibrating the RF transmitters using the transmitter self calibration operations; and second loopback calibration operations during which the RF transmitter of the first RF transceiver group is active and the RF receiver of the second RF transceiver group is active to determine receiver calibration settings for the RF receiver of the second RF transceiver group, the second loopback calibration operations being performed only after calibrating the RF transmitters using the transmitter self calibration operations.