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The Input Impedance of Common-Mode Differential-Mode Noise Separators
RISE, Swedish ICT, Acreo.
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2015 (English)In: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 51, no 3, p. 2352-Article in journal (Refereed) Published
Abstract [en]

This paper discusses the Δ-networks other circuits designed to separate the conducted electromagnetic interference (EMI) into its common mode (CM) differential mode (DM) components. The input impedances of CM/DM separators must be 50 Ω resistive in the measurement frequency range, and they must be independent of the values of the noise signals and noise source impedances. The conditions for achieving such input impedances are derived. It is shown that many of the proposed separators, including the Δ-network suggested in the International Special Committee on Radio Interference (CISPR) 16-1-2 standard, do not fulfill the input impedance requirement. This leads to unreliable CM DM measurements and, consequently, to the oversizing of EMI filters design by trial error._x000D_

Place, publisher, year, edition, pages
2015. Vol. 51, no 3, p. 2352-
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-31907DOI: 10.1109/TIA.2014.2370094OAI: oai:DiVA.org:ri-31907DiVA, id: diva2:1151765
Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2018-01-13Bibliographically approved

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