DocumentCode
2531625
Title
Double-sampled cascaded sigma-delta modulator topologies for low oversampling ratios
Author
Yavari, Mohammad ; Shoaei, Omid ; Rodriguez-Vazquez, Angel
Author_Institution
Dept. of ECE, Tehran Univ.
fYear
2006
fDate
21-24 May 2006
Lastpage
600
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
Keywords
cascade networks; noise; sigma-delta modulation; transfer functions; double-sampling cascaded topology; finite impulse response; noise shaping; noise transfer function; quantization noise folding; sampling frequency; sigma-delta modulator; Circuit noise; Delta-sigma modulation; Finite impulse response filter; Frequency; Noise shaping; Quantization; Sampling methods; Topology; Transfer functions; Wideband;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location
Island of Kos
Print_ISBN
0-7803-9389-9
Type
conf
DOI
10.1109/ISCAS.2006.1692656
Filename
1692656
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