DocumentCode :
454370
Title :
Double-Sampling Single-Loop Sigma-Delta Modulator Topologies for Broadband Applications
Author :
Yavari, Mohammad ; Shoaei, Omid ; Rodriguez-Vazquez, Angel
Author_Institution :
Dept. of ECE, Tehran Univ.
Volume :
1
fYear :
2006
fDate :
6-10 March 2006
Firstpage :
1
Lastpage :
6
Abstract :
This paper presents novel double sampling high order single-loop sigma-delta modulator structures for wideband applications. To alleviate the quantization noise folding into the inband frequency region, two previously reported techniques are used. The DAC sampling paths are implemented with the single capacitor approach and an additional zero is placed at the half of the sampling frequency of the modulator´s noise transfer function (NTF). The detrimental effect of this additional zero on both the NTF and signal transfer function (STF) is also resolved through the proposed modulator architectures with a low additional circuit requirement
Keywords :
circuit noise; network topology; sigma-delta modulation; transfer functions; DAC sampling paths; broadband applications; double-sampling modulator topologies; noise transfer function; quantization noise; signal transfer function; single-loop sigma-delta modulator topologies; Capacitors; Circuit noise; Delta-sigma modulation; Frequency modulation; Quantization; Sampling methods; Signal resolution; Topology; Transfer functions; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Design, Automation and Test in Europe, 2006. DATE '06. Proceedings
Conference_Location :
Munich
Print_ISBN :
3-9810801-1-4
Type :
conf
DOI :
10.1109/DATE.2006.243765
Filename :
1656913
Link To Document :
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