A real-time low-noise ultrabroadband time-domain EMI measurement system up to 18 GHz

Christian Hoffmann, Peter Russer

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In this paper, a novel time-domain electromagnetic interference (EMI) measurement system for the frequency range from 9 kHz to 18 GHz is presented. It combines ultrafast A-D conversion and real-time digital signal processing on a field-programmable-gate-array (FPGA) with ultrabroadband multistage down conversion. Emission measurements can be accelerated by several orders of magnitude in comparison with measurements using traditional heterodyne EMI-receivers. With its IF dynamic range of over 60 dB, the system fully complies with the requirements stated by CISPR 16-1-1. The low system noise figure allows for high sensitivity. Measurements of the radiated EMI spectra and time behavior of several devices under test up to 18 GHz are presented.

Original languageEnglish
Article number5944966
Pages (from-to)882-890
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Volume53
Issue number4
DOIs
StatePublished - Nov 2011

Keywords

  • Broadband down conversion
  • electromagnetic compatibility (EMC)
  • electromagnetic interference (EMI)
  • time-domain measurements

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