Patent ID: 8600329

Claim:
An interfering signal canceller for cancelling an interfering signal component of an input signal, having a predetermined band of frequencies, from a desired signal component of the input signal, wherein the input signal is fed to a primary path and an auxiliary path, the interfering signal canceller comprising: a passive isolation element disposed in the primary path and fed by the input signal; a first frequency converter disposed in the auxiliary path and fed by the input signal for converting the input signal to an intermediate or baseband frequency signal; a bandpass filter tuned to the interfering signal component of the converted input signal for passing the interfering signal component of the converted input signal and for suppressing the desired signal component of the converted input signal; a second frequency converter and phase rotator section for converting and phase adjusting the passed the interfering signal component and the suppressed desired signal component to the predetermined band of frequencies; a combiner and time delay compensator for combining signals passed by the passive isolation element and the second frequency converter and phase rotator section and compensating for time delays between the signals passed by the passive isolation element and by the second frequency converter and phase rotator section.