A radio frequency (RF) transceiver is provided. The RF transceiver
comprises a transmit path comprising an output coupled to an RF antenna,
a feedback path comprising an input coupled to the output of the transmit
path, and a DC offset calibration module comprising a first input coupled
to an output of the feedback path, a second input to receive a first
signal and an output connected to an input of the transmit path. The DC
offset calibration module is operable to determine a first direct current
(DC) offset of a closed-loop path comprising the transmit path and the
feedback path and determine a second DC offset based on the feedback path
exclusive of the transmit path.