Modulo-based analog-to-digital conversion apparatus and method

An analog-to-digital conversion method comprising:

• converting an input analog signal into phases of M periodic reference signals based on at least one transfer function, wherein M≥2, and wherein the phase of each of the M periodic reference signals comprises the input analog signal amplitude-folded into a folded signal that falls within an amplitude range;
• obtaining M discrete-time digital signals by performing an ADC operation on the M periodic reference signals within the amplitude range;
• and
• based on the M discrete-time digital signals, obtaining a digital representation of the input analog signal.

A computer program product comprising:

• a non-transitory computer-readable storage medium storing a computer code which, when executed by at least one processor, causes the at least one processor to perform:
• converting an input analog signal into phases of M periodic reference signals based on at least one transfer function, wherein M≥2, and wherein the phase of each of the M periodic reference signals comprises the input analog signal amplitude-folded into a folded signal that falls within an amplitude range;
• obtaining M discrete-time digital signals by performing an ADC operation on the M periodic reference signals within the amplitude range;
• and
• based on the M discrete-time digital signals, obtaining a digital representation of the input analog signal.