Patent ID: 8290449

Claim:
A feedforward error-compensated receiver for minimizing undesired odd-order nonlinear distortion products comprising: a first receiver path having a first path input configured to receive an input signal having at least one non-baseband frequency, and at least one first path output configured to provide a first path output signal having at least one baseband (BB) frequency, said first receiver path comprising at least one mixer, said at least one mixer having a first input terminal electrically coupled to a local oscillator configured to provide a local oscillator signal and having a second input terminal electrically coupled to said first path input and having a mixer output terminal electrically coupled to said at least one first path output, said mixer configured to perform a frequency conversion, said first path output signal comprising an odd-order nonlinear distortion component; at least one second receiver path having a second path input configured to receive an input signal having at least one non-baseband frequency, and a second receiver path output terminal configured to provide a second receiver path output signal, said second receiver path comprising at least one odd-order nonlinear distortion reference generator having an output terminal, said second receiver path comprising at least one mixer, each of said at least one mixer having a first input terminal electrically coupled to a local oscillator configured to provide a local oscillator signal and having a second input terminal electrically coupled to said at least one odd-order nonlinear distortion reference generator output terminal and having a mixer output terminal electrically coupled to said at least one second path output, said at least one odd-order nonlinear distortion reference generator and said mixer configured to generate a synthetic odd-order nonlinear distortion signal as output that is substantially similar to said odd-order nonlinear distortion component that appears at said first path output terminal; and a combining element configured to receive said output signal from said first path output terminal and configured to receive said output signal from said second receiver path output terminal and configured to combine said input signals such that the odd-order nonlinear distortion signals are substantially attenuated at an output of said combining element.