An improved sampling approach to overcome transient effect in staircase waveform and its application

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DOIResolve DOI: http://doi.org/10.1109/CPEM.2014.6898579
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TypeArticle
Proceedings title2014 Conference on Precision Electromagnetic Measurements (CPEM 2014)
Series titleCPEM Digest
Conference29th Conference on Precision Electromagnetic Measurements, CPEM 2014, 24 August 2014 through 29 August 2014
ISSN0589-1485
ISBN978-1-4799-5205-2
Article number6898579
Pages702703; # of pages: 2
SubjectTerms-Differential measurement; digital-analog conversion; Transient effect; discrete Fourier transform; non-sinusoidal wave; Nyquist Theorem; sampling; staircase waveform; transient effect
AbstractThe advantage of the new sampling approach to overcome transient effect in staircase waveform is described. Based on this sampling approach, a general form is developed in this paper. In this form, more samples are used for calculations in the measurement. It provides a better basis to achieve a lower uncertainty as reduced noise impact and more information. A sine-wave experiment shows the advantage of the multi-point approach. When the more frequency components of the measured signal are asked, it faces a matter of unequal-interval sampling. It is found that the aliasing effect of sampling is solvable under the discussed condition. A novel method is developed to perform Fourier transform to extend application of Nyquist Theorem, in which the matrixes to solve the relative equation set are given out in the forms of digital and formula. Experiments for a non-sinusoidal wave validates that the higher frequency components can be analyzed, in which a differential sampling scheme is proposed.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number21274922
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Record identifier28e66f8a-d407-4eda-b7b4-7ce2263f067e
Record created2015-04-29
Record modified2016-05-09
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