A method, comprising: during a first calibration instance, converting at a first transconductance stage a first output voltage from a power amplifier of a transceiver to a first set of current signals, an input of the first transconductance stage coupled to an output of a receiver circuitry , the power amplifier for driving a transmit antenna , and the receiver circuitry for receiving a receiver antenna signal from a receive antenna ; during a second calibration instance non-overlapping the first calibration instance, converting at a second transconductance stage a second output voltage from the power amplifier to a second set of current signals, an input of the second transconductance stage decoupled from the output of the receiver circuitry; mixing, during the first calibration instance, the first set of current signals at two downconversion mixers of a convert and process circuitry , the mixers being I/Q mixers, and each current signal of the first set of current signals being mixed by its corresponding mixer, and mixing, during the second calibration instance, the second set of current signals at the two downconversion mixers, each current signal of the second set of current signals being mixed by its corresponding mixer; and calibrating an I/Q unbalance in the first transconductance stage and the convert and process circuitry using the first output voltage of the power amplifier as a test signal during the first calibration instance; and applying predistortion, by a baseband processor , to an input of the power amplifier based on signal information received from the convert and process circuitry during the second calibration instance; and wherein of the first and second transconductance stages, either only the first transconductance stage or only the second transconductance stage is turned on, but not both at the same time. during a first calibration instance, converting at a first transconductance stage a first output voltage from a power amplifier of a transceiver to a first set of current signals, an input of the first transconductance stage coupled to an output of a receiver circuitry , the power amplifier for driving a transmit antenna , and the receiver circuitry for receiving a receiver antenna signal from a receive antenna ; during a second calibration instance non-overlapping the first calibration instance, converting at a second transconductance stage a second output voltage from the power amplifier to a second set of current signals, an input of the second transconductance stage decoupled from the output of the receiver circuitry; mixing, during the first calibration instance, the first set of current signals at two downconversion mixers of a convert and process circuitry , the mixers being I/Q mixers, and each current signal of the first set of current signals being mixed by its corresponding mixer, and mixing, during the second calibration instance, the second set of current signals at the two downconversion mixers, each current signal of the second set of current signals being mixed by its corresponding mixer; and calibrating an I/Q unbalance in the first transconductance stage and the convert and process circuitry using the first output voltage of the power amplifier as a test signal during the first calibration instance; and applying predistortion, by a baseband processor , to an input of the power amplifier based on signal information received from the convert and process circuitry during the second calibration instance; and wherein of the first and second transconductance stages, either only the first transconductance stage or only the second transconductance stage is turned on, but not both at the same time. <EOS>