Patent ID: 8792831

Claim:
A mobile wireless communications device comprising: a portable housing; a transceiver comprising a transmitter and a receiver carried by said portable housing, said transmitter configured to be selectively operable based on a control signal between a single-mixer mode and a dual-mixer mode to upconvert a transmit baseband modulated signal and generate an RF modulated signal having a transmit impairment; an auxiliary receiver carried by said portable housing and coupled to said transmitter and configured to be selectively operable based on the control signal between the single-mixer mode, when said transmitter is in the dual-mixer mode, and the dual-mixer mode, when said transmitter is in the single-mixer mode, to downconvert the RF modulated signal and generate a receive baseband modulated signal having the transmit impairment; and a controller carried by said portable housing and coupled to said transmitter and said auxiliary receiver, said controller configured to compare the transmit baseband modulated signal to the transmit impairment to determine an error difference therebetween, and generate the control signal based on the error difference.