Interpolative analog/digital converter for band-pass signals

Details Interpolative analog/digital converter for band-pass signals Interpolative analog/digital converter for band-pass signals

H - Electricity

03

M

H03M 1/06 (2006.01) H03D 1/22 (2006.01) H03D 3/00 (2006.01) H03M 3/02 (2006.01)

Patent

CA 2072568

(57) Abstract The invention relates to an interpolative analog/digital converter for band-pass signals in which the amplitudes of the scanning values are quantized in 2 consecutive stages. The first stage contains the actual analog/digital interface and the second stage is purely digital. The amplitudes of the scanning values are not quantized, as in other processes, using finely quantizing ele- ments at the analog/digital interface, but by overscanning, shaping of the quantization noise spectrum and digital interpolation. As a result, very coarsely resolving elements (with only 2 quantization stages in the extreme case) can be used at the actual ana- log/digital interface.

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