Patent ID: 8823573

Claim:
A method for converting a high bandwidth analog signal to a digital signal, the method comprising: receiving the high bandwidth analog signal; splitting the high bandwidth analog signal to M parallel channels; delaying the split signal in each channel with N*T delays, respectively, where N is an integer from 0 to M−1, and T is a period of a clock signal with a minimum frequency of the Nyquist frequency of the high bandwidth analog signal; sampling each M delayed signals by M relatively prime sampling rate, wherein the sampling rate for each M delayed signal is smaller than the Nyquist frequency of the high bandwidth analog signal; upsampling each M sampled signal using an upsampling ratio, wherein the upsampling rate for each M sampled signal satisfies the Nyquist frequency of the high bandwidth analog signal; combining the M up sampled signals into a combined signal; and reconstructing the combined signal to generate a digital signal representing the high bandwidth analog signal, wherein said reconstructing the combined signal is performed by a compressed sensing method.