Patent ID: 6031869
Filing Date: 2000-02-29
Classification: H03D

Abstract:
A system for resolving frequency ambiguities in a digital receiver having a sampling rate lower than the Nyquist rate which comprises:(a) a digital receiver which has a sampling rate lower than the Nyquist rate which includes:(i) a first pair of A/D converters for receiving a first common input signal;(ii) a second pair of A/D converters for receiving a second common input signal out of phase with said first input signal;(iii) a first sampling input to one of said first pair of converters and one of said second pair of converters to sample said one of said first pair of converters and one of said second pair of converters at a first sampling rate lower than the Nyquist rate;(iv) a second sampling input to the other of said first pair of converters and the other of said second pair of converters to sample the other of said first pair of converters and said second pair of converters at a second sampling rate lower than the Nyquist rate and different from said first sampling rate; and(b) a processor to process the digital outputs of said first and second pairs of converters.