Abstract
This article presented a novel digital blind calibration technique of time-skew mismatches for time-interleaved analogue-to-digital converter (TI-ADC). Based on the frequency-shifted and derived operation, the spurious signals could be reconstructed and subtracted from the sampled signal adaptively. The main advantage of the proposed calibration technique is applicable to any channel TI-ADC and could achieve higher performance in comparison with the state-of-the-arts. Numerical simulations and experimental results have demonstrated that the proposed calibration technique could significantly improve the signal to noise and distortion ratio (SNDR) and spurious-free dynamic range (SFDR) of the TI-ADC system.
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