Patent ID: 8301104
Filing Date: 2012-10-30
Classification: H04B

Abstract:
1. A receiver comprising: an input configured to receive an analog radio frequency input signal within a radio frequency band comprising a frequency in excess of 500 MHz, comprising a modulated information signal and at least one additional signal; a subtractor configured to receive a representation of the analog radio frequency signal and a subtraction signal, and to produce a subtractor output representing a combination of the analog radio frequency signal and a subtraction signal, the subtractor output comprising an intermodulation distortion product, wherein in a presence of an appropriate subtraction signal received by the subtractor, the intermodulation distortion product is generated at least 3 dB attenuated in amplitude with respect to the intermodulation distortion product produced in the absence of the appropriate subtraction signal; a digitally controlled signal generator, configured to produce the appropriate subtraction signal as a radio frequency signal, comprising a representation of the at least one additional signal synchronized with the at least one additional signal, such that the subtractor diminishes an amplitude of the at least one additional signal and the intermodulation distortion product at the subtractor output; and a digitizer having an instantaneous bandwidth of at least 10 MHz, receiving the subtractor output.