Patent ID: 8903014

Claim:
A communications device comprising: a plurality of wireless transmitters operable at different respective frequencies and each configured to generate respective IQ signals having an initial IQ imbalance; a frequency tunable auxiliary receiver comprising a low noise amplifier (LNA), and at least one mixer coupled downstream of said LNA, and a receiver phase locked loop (RXPLL) coupled to said at least one mixer, said RXPLL being tunable to the frequencies of the plurality of wireless transmitters; and a controller configured to selectively couple a given wireless transmitter from among the plurality of wireless transmitters to said frequency tunable auxiliary receiver and tune said frequency tunable auxiliary receiver to a frequency of the given wireless transmitter from among the plurality of wireless transmitters, and apply predistortion to the given wireless transmitter from among the thereof based upon the initial IQ imbalance generated by the given wireless transmitter from among the plurality of wireless transmitters to reduce the initial IQ imbalance.