IN-PHASE AND QUADRATURE SAMPLING CIRCUIT

摘要

A circuit that provides samples of in-phase and quadrature componenents of an input waveform includes an oversampling sigma-delta ADC that receives the input waveform and converts the input waveform to digital samples at an oversampling rate. A first digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the in-phase component samples of the input waveform. A second digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the quadrature component samples of the input waveform.