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Application of fractional delay filters to tune the centre frequency location of single-band sigma-delta modulators

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3 Author(s)
Al-Janabi, M. ; Dept. of Electron. Syst., Westminster Univ., London, UK ; Kale, I. ; Morling, R.C.S.

This paper presents a novel technique for the design of narrow-band sigma-delta modulators with an embedded tunable centre frequency mechanism. This method demonstrates that the use of sum filters combined with a fractional delayer provide the flexibility of tuning the noise shaping band for any desired variable centre frequency input signal

Published in:

Circuits and Systems, 1999. 42nd Midwest Symposium on  (Volume:1 )

Date of Conference:

1999