A real-time multiresolution time-domain EMI measurement system based on ultra-fast high resolution analog-to-digital converters

Stephan Braun, Stoyan Iliev, Mohammed Al-Qedra, Peter Russer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

In the past and now measurements of electromagnetic interference (EMI) are carried out by EMI-Receivers operating in frequency-domain. By a time-domain EMI measurement system the measurement time can be reduced by several orders of magnitude. In this paper a novel real-time time-domain EMI measurement system that uses a hardware implementation of the Fast Fourier Transform and the detector modes is described. A multiresolution Time-domain EMI System has been developed that processes the EMI Signal by several parallel Analog-to-Digital Converters with an improved dynamic range. The signals are digitized by three 10 bit ADCs which operate at 2.3 GS/s. The obtained EMI signal with a high resolution is further processed in real-time by a decimation filter and a short time fast Fourier transform on the Field Programmable Gate Array. By this way the measurement time can be reduced by a factor of 2000 in comparison to EMI Receivers and Spectrum Analyzers. Due to the real-time implementation auxiliary outputs that are provided by EMI Receivers as well as Spectrum analyzers can also be provided by a Time-domain EMI Measurement System. The two tone intermodulation distortion as well as the measurement accuracy of the Time-domain EMI Measurement System have been experimentally investigated in the frequency range 30 MHz - 1 GHz. The maximum deviation in comparison to an EMI Receiver has been 1.5 dB.

Original languageEnglish
Title of host publication16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006
PublisherIEEE Computer Society
Pages665-668
Number of pages4
ISBN (Print)9788390666280
DOIs
StatePublished - 2006
Event16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006 - Krakow, Poland
Duration: 22 May 200624 May 2006

Publication series

Name16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006

Conference

Conference16th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2006
Country/TerritoryPoland
CityKrakow
Period22/05/0624/05/06

Keywords

  • Analogue-digital conversion
  • Discrete Fourier transforms
  • Electromagnetic interference

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