Investigation of Fundamental EMI Source Mechanisms Driving Common-Mode Radiation from Printed Circuit Boards with Attached Cables

James L. Drewniak, Missouri University of Science and Technology
Todd H. Hubing, Missouri University of Science and Technology
Thomas Van Doren, Missouri University of Science and Technology
Michael J. Wilhelm
Fei Sha
David M. Hockanson

This document has been relocated to

There were 11 downloads as of 28 Jun 2016.


Fundamental EMI source mechanisms leading to common-mode radiation from printed circuit boards with attached cables are presented in this paper. Two primary EMI source mechanisms have been identified: one associated with a differential-mode voltage and another associated with a differential-mode current, both of which result in a common-mode current on an attached cable. These mechanisms can he used to relate printed circuit layout geometries to EMI sources. The two mechanisms are demonstrated through numerical and experimental results, and an example from a production printed-circuit design is presented.