CORRECTION OF ANALOGUE DEFECTS IN PARALLEL ANALOGUE / DIGITAL CONVERTERS, IN PARTICULAR FOR MULTISTANDARDS, SOFTWARE AND / OR RADIO-COGNITIVE APPLICATIONS.

摘要

The present invention relates to signal processing in an analog / digital converter having a time-interleaved multipath architecture. Within the meaning of the invention, we apply: - a digital filtering (H (z)) in each channel at least to estimate an offset error of the converter, - and compensation of the offset as a function of the error of estimated offset. Advantageously, one can take advantage of the presence of a digital filter (H (z)) usually used to filter the quantization noise, such as a comb filter in sigma-delta modulator converters, to estimate the offset. . The same filtering can then be applied to estimate a disparity of gains between the different channels.