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si-correction filters for D/A-converter

: Klaas, L.; Reuter, T.

NTZ-Archiv 6 (1984), No.1, pp.3-5
ISSN: 0170-172X
Journal Article
Fraunhofer HHI ()
all-pass filters; digital-analogue conversion; passive filters; D/A converter; output signal; Si-function; Si-correction filter; low-pass filter; errorless signal reconstruction; all-pass filter; group delay equalisation

The spectrum of a D/A converter output signal is rated with an si-function. Therefore it is necessary to use an si-correction filter in addition to a low-pass filter for the errorless signal reconstruction. Six easy to realize si-correction filters that suffice most practical requirements are presented. Besides that, for each of the six filters an all-pass filter was designed. This all-pass can be inserted behind the si-correction filter if the group delay equalisation for a low-pass and the si-correction filter cannot be performed with a single network.