IMPROVEMENT OF SPECTRAL PROPERTIES OF QUANTIZATION NOISE BY MULTIRESOLUTION QUANTIZATION
Miroslav Kamenský, Karol Kovác, Gabriel Války
Abstract:
In the area of electromagnetic interference (EMI) time-domain EMI measurement systems significantly reduce measurement time. As EMI measurements require high dynamic range or signal-to-noise ratio and wide frequency range, a multiresolution structure of available fast sampling analog-to digital converters (ADC) is used inside such systems. The combination of several ADCs allows to increase overall dynamic range of measuring device. In the paper spectral properties of the quantization noise of system with two ADCs are analyzed by simulations as well as experimentally for harmonic input signal. Multiresolution measurements were realized by two channels of data acquisition card and PC postprocessing. The noise suppression achieved by experiments is presented.
Download:
IMEKO-IWADC-2011-31.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
IWADC 2011
Title:

16th IMEKO International Workshop on ADC Modeling and Testing - Data Converter Design, Modeling and Testing (together with IEEE ADC Forum) (IWADC)

Place:
Orvieto, ITALY
Time:
30 June 2011 - 01 July 2011
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