Patent ID: 8000674

Claim:
A method for canceling a self-jammer signal and one or more other interfering signals, the method comprising: receiving a radio frequency (RF) signal, in a first cancellation loop, the received RF signal comprising wanted signals and unwanted signals, the unwanted signals comprising the self-jammer signal and one or more other interfering signals; canceling the self-jammer signal from the received RF signal in the first cancellation loop by modifying the received RF signal with a cancellation signal generated by coupling a transmitted output of a transmitter to the first cancellation loop, the cancellation signal being equal or nearly equal in amplitude to the self-jammer signal and 180 degrees out of phase or nearly out of phase with the self-jammer signal, the modified received RF signal comprising wanted signals and the one or more other interfering signals; sending the modified received RF signal from an output of the first cancellation loop to an input of the second cancellation loop; and canceling the one or more other interfering signals from the modified received RF signal in the second cancellation loop without up-converting and/or down-converting the one or more interfering signals and by splitting the modified received RF signal output from the first cancellation loop into a through signal and an amplitude-limited signal and combining the through signal and the amplitude-limited signal after the splitting to form an output of the second cancellation loop, the amplitude-limited signal being linearly scaled and phase rotated 180 degrees out of phase from the through signal, the output of the second cancellation loop being different from the output of the first cancellation loop.