Return Current Design

  • Bruce R. Archambeault
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 696)


Many EMI problems associated with high-speed circuits are due to improper design of the return current path. PCB designers often expend considerable effort to carefully design traces with the proper length, proper transmission line impedance, etc., but neglect the return current path that completes the current loop. These EMI problems can usually be avoided if attention is paid to this return current path.


Return Current Reference Plane Current Path Signal Trace Direct Current Power 
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  2. [5.2]
    W. Cui, X. Ye, B. Archambeault, D. White, M. Li, and J. L. Drewniak, “Modeling EMI resulting from a signal via transition through power/ground layers,” Proceedings of the 16th Annual Review of Progress in Applied Computational Electromagnetics, Monterey, CA, pp. 436–443, March 2000.Google Scholar

Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  • Bruce R. Archambeault
    • 1
  1. 1.IBM CorporationResearch Triangle ParkUSA

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