Patent ID: 8803724
Filing Date: 2014-08-12
Classification: H03M

Abstract:
1. An analog to digital conversion system comprising a plurality of analog to digital subconverters, the conversion system having a higher sampling rate than the sampling rate of the sub converters, the system comprising: a signal distribution front end having at least two signal paths for an analog input signal; a limiting mixer in at least one of the signal paths to mix the analog signal with a mixing signal having at least two discrete levels; a passive smoothing filter in the at least one signal path to filter the output of the mixed analog signal; an analog to digital subconverter in each signal path, the subconverters having a sampling rate less than the sampling rate of the analog to digital conversion system; and a digital matrix filter operable to combine the digital outputs from the subconverters in each path to produce an overall digital output signal corresponding substantially to the input analog signal sampled at the rate of the analog to digital conversion system, the digital matrix filter further operable to compensate the overall digital output signal for aliasing artifacts.