Patent ID: 8483646

Claim:
A circuit comprising: a demodulator comprising: a mixer receiving a differential RF signal and a differential local oscillator (LO) signal, the mixer having differential output terminals outputting a first differential output signal; a first resistor and a matched second resistor coupled in series across the differential output terminals and having a first common node; a third resistor and a matched fourth resistor coupled in series across the differential output terminals and having a second common node; a capacitor coupled between the second common node and a reference source; a first differential amplifier having inputs coupled to the first common node and the second common node and generating a second differential output signal; a scaler coupled to the first differential amplifier for scaling the second differential output signal, the scaler generating a third differential output signal, the third differential output signal being applied to the differential output terminals of the mixer to at least partially offset distortions caused by second-order intermodulation (IM2) components.