Patent ID: 6594476
Filing Date: 2003-07-15
Classification: H03H

Abstract:
An electronic filter system, the electronic filter system comprising:an amplifier, the amplifier having a gain equal to one of less than unity, unity and greater than unity, the amplifier being responsive to an input signal, the amplifier outputting an amplified input signal; an electronic filter, the electronic filter being responsive to at least one of the input signal and the amplified input signal; an interference suppression circuit, the interference suppression circuit generating a replica signal from a reference sample signal and an error sample signal, the reference sample signal being representative of the amplified input signal, the error sample signal being representative of differences between the replica signal and an input sample signal, the input sample signal being representative of the input signal, the replica signal having substantially the same phase and amplitude as the input sample signal; and a first coupler, the first coupler coupling the replica signal to the input signal.