An adaptive self-calibrating image rejection receiver
is described, containing a modified Weaver image rejection mixer and a Digital Image Rejection Processor (DIRP). The blind source-separation-based DIRP eliminates the I/Q errors
improving the Image Rejection Ratio (IRR) without the need for trimming or use of power-hungry discrete components.
Hardware complexity is minimal, requiring only two complex
coefficients; hence it can be easily integrated into the signal processing path of any receiver. Simulation results show that the proposed approach achieves 75-97 dB of IRR.