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Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Frequency Spectrum Correction Method for the ADC Testing

Popis výsledku v původním jazyce

The main issue of high resolution ADC testing in the frequency range from hundreds of kHz to several MHz is the spectral purity of a testing signal. Commercial low distortion generators can operate only up to the frequency of one or two hundreds of kHz;generators operating in higher frequency range have generally the spectral purity worse than the one corresponding to the ADC resolution. Some improvements can be brought by filtering of the testing signal. Most of the LC filters for the frequency rangeup to several MHz contain coils with ferromagnetic cores. This causes the rise of higher harmonic components. If those components are known or determined by measurement, they can be subtracted from the frequency spectrum measured by the tested ADC. In the ideal case, only a frequency spectrum corresponding to the ADC non-linearity remains. The measurement system designed for frequency spectrum correction and the first results achieved by applying this method are introduced in the paper.

Název v anglickém jazyce

Frequency Spectrum Correction Method for the ADC Testing

Popis výsledku anglicky

The main issue of high resolution ADC testing in the frequency range from hundreds of kHz to several MHz is the spectral purity of a testing signal. Commercial low distortion generators can operate only up to the frequency of one or two hundreds of kHz;generators operating in higher frequency range have generally the spectral purity worse than the one corresponding to the ADC resolution. Some improvements can be brought by filtering of the testing signal. Most of the LC filters for the frequency rangeup to several MHz contain coils with ferromagnetic cores. This causes the rise of higher harmonic components. If those components are known or determined by measurement, they can be subtracted from the frequency spectrum measured by the tested ADC. In the ideal case, only a frequency spectrum corresponding to the ADC non-linearity remains. The measurement system designed for frequency spectrum correction and the first results achieved by applying this method are introduced in the paper.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IMTC'04 Proceedings of the 21th IEEE Instrumentation and Measurement Technology Conference

ISBN

0-7803-8248-X

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

533-536

Název nakladatele

IEEE Instrumentation and Measurement Society

Místo vydání

Como

Místo konání akce

Como

Datum konání akce

18. 5. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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