Patent ID: 9479203
Filing Date: 2016-10-25
CPC Classification: H04B

Claim Text:
1. A transceiver capable of IQ mismatch compensation, comprising: a transmitter circuit, configured to up-convert a modulation signal on the fly to generate a first RF signal for both radio transmission and IQ mismatch determination, wherein the first RF signal is passed to an antenna for radio transmission; and a loop-back circuit, configured to receive the first RF signal generated by the transmitter circuit, down-convert the first RF signal, and then digitize the down-converted first RF signal, the loop-back circuit comprising an IQ mismatch detector configured to receive both the modulation signal and the down-converted first RF signal, the IQ mismatch detector further configured to determine a first IQ mismatch parameter based on a first statistical measure of the digitized down-converted first RF signal in relation to the modulation signal, wherein the transmitter circuit further comprises a transmitter IQ mismatch compensator that receives the modulation signal and is configured to compensate for first IQ mismatch in the transmitter circuit according to the first IQ mismatch parameter determined by the IQ mismatch detector to generate an IQ compensated modulation signal.