IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Efficient double-sampled cascaded ΣΔ modulator topologies for low OSRs
Mohammad YavariOmid Shoaei
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2005 Volume 2 Issue 13 Pages 404-410

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Abstract

This paper presents novel double-sampling cascaded sigma-delta modulator topologies for wideband applications. The proposed modulator structures employ finite impulse response (FIR) noise transfer function (NTF) to achieve the aggressive noise shaping with an additional zero at the half of the sampling frequency to alleviate the quantization noise folding. Cascading of the proposed modulator structures is very simple without any additional circuit requirements.

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© 2005 by The Institute of Electronics, Information and Communication Engineers
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