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Abstract

Nyquist folding receivers (NYFRs) are disclosed that use three or more non-modulated sampling clock signals with different frequencies to produce multiple projections in a sampled output. Using these three or more different sampling clock signals, multiple Nyquist zones are aliased together while still allowing signals from different Nyquist zones to be separated and identified in later processing based upon the sampling provided by the different sampling clock signals. NYFR sampling receivers are also disclosed that simultaneously produce multiple separate and different parallel channels from an input signal, with each different channel having a different sampling clock sampling rate from the other channels so as to generate a respective folding pattern that is different from the folding pattern generated by the respective RF sampling rate of each of the other simultaneous and parallel channels. A particular signal may be separated and identified by matching it to the respective different folding patterns in each of the simultaneous multiple different parallel channels.

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