The present invention provides a technique for cancellation of jammer
signals in a radio frequency receiver. A radio frequency signal contains
both a desirable signal and an undesirable jammer signal. The combined
signal is processed with a filter (104) to extract only the undesirable
jammer signal. The jammer signal is then added (104) back to the combined
signal to effectively cancel the jammer signal. The system may be
implemented using a feedforward approach or a feedback approach. The
resultant clean signal is processed in a conventional manner.