Patent ID: 8078130

Claim:
An interference cancellation system configured to receive an analog input RF signal, said interference cancellation system comprising: cancel path circuitry comprising cancel path signal sampling circuitry and signal isolation circuitry; and signal path circuitry comprising signal path signal sampling circuitry; wherein said cancel path signal sampling circuitry is coupled to sample said analog input RF signal to produce an analog or digital cancel path selected sample IF signal, and wherein said signal isolation circuitry is coupled to receive said cancel path selected sample IF signal and to isolate a signal within said cancel path analog selected sample IF signal and to output said isolated signal as an analog cancellation IF signal having a different frequency than said analog input RF signal; and wherein said signal path circuitry is coupled to combine said analog input RF signal with said analog cancellation IF signal to create a modified analog input signal, wherein said signal path signal sampling circuitry is coupled to sample said modified analog input signal to produce a signal path analog or digital selected sample signal.