Patent ID: 8666002

Claim:
A receiver for compensating I/Q mismatch, said receiver comprising: an analog down-conversion unit for receiving a radio frequency (RF) signal, down-converting the RF signal into a set of analog low intermediate frequency (IF) signals, and converting the set of analog low IF signals into a set of digital low IF signals; a digital down-conversion unit coupled to said analog down-conversion unit, down-converting the set of digital low IF signals into a set of digital low frequency (LF) signals, and converting the set of digital LF signals into a first baseband signal and a second baseband signal, respectively; and a compensation unit coupled to said digital down-conversion unit, and including: a time domain-frequency domain transforming module receiving the first and second baseband signals, and transforming each of the first and second baseband signals into a respective one of a first frequency domain baseband signal and a second frequency domain baseband signal; a compensation parameter calculating module receiving the first and second frequency domain baseband signals and calculating a compensation parameter based thereon; and a compensation module receiving the first and second baseband signals and the compensation parameter, calculating a product of the second baseband signal and the compensation parameter, and outputting a target signal according to a difference between the first baseband signal and the product calculated thereby.