Patent ID: 8594603

Claim:
A system for cancelling interferers in a receiver, comprising: a first mixer in a main path that downconverts a first RF signal to form a main baseband or intermediate-frequency signal; a second mixer in an alternate path that downconverts a second RF signal to form an alternate baseband or intermediate-frequency signal; a high-pass filter that filters the alternate baseband or intermediate-frequency signal to produce a high-pass-filtered alternate baseband or intermediate-frequency signal; a combiner that combines the main baseband or intermediate-frequency signal and the high-pass-filtered alternate baseband or intermediate-frequency signal to form a combined signal; and a low-pass filter that forms a baseband or intermediate-frequency signal based on the combined signal, wherein the first RF signal and the second RF signal are both based on a third RF signal, and wherein the main baseband or intermediate-frequency signal and the high-pass-filtered alternate baseband or intermediate-frequency signal, when combined, cancel out an interferer in the third RF signal.