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Article
EMI-debugging of Complex Systems using Different Time, Modulation, STFFT and Frequency Domain Signal Analysis Techniques
Proceedings of the 2005 International Symposium on Electromagnetic Compatibility, 2005
  • Zhe Li
  • David Pommerenke, Missouri University of Science and Technology
Abstract
One faces a difficult situation in EMI debugging if multiple sources radiate at the same frequency, especially, if little details on the EUT are provided. In this paper, we apply and compare a set of signal analysis techniques for identifying radiated emission sources. First, theoretical background of Joint Time-Frequency Analysis (JTFA) is given and an algorithm using Short-Term Fast Fourier Transform (STFFT) approach is applied for the data analysis. STFFT analysis provides an exclusive insight into time-dependent emission processes. Also, narrow span and zero span spectrum analysis are discussed. Special emphasis is given on signals sideband characteristics.
Meeting Name
2005 International Symposium on Electromagnetic Compatibility, 2005
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
  • Dithered Clock,
  • Fast Fourier Transform (FFT),
  • Sidebands,
  • Zero-Span
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2005 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
1-1-2005
Citation Information
Zhe Li and David Pommerenke. "EMI-debugging of Complex Systems using Different Time, Modulation, STFFT and Frequency Domain Signal Analysis Techniques" Proceedings of the 2005 International Symposium on Electromagnetic Compatibility, 2005 (2005)
Available at: http://works.bepress.com/david-pommerenke/101/