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 be 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.
D. M. Hockanson et al., "Investigation of Fundamental EMI Source Mechanisms Driving Common-Mode Radiation from Printed Circuit Boards with Attached Cables," IEEE Transactions on Electromagnetic Compatibility, vol. 38, no. 4, pp. 557-566, Institute of Electrical and Electronics Engineers (IEEE), Nov 1996.
The definitive version is available at http://dx.doi.org/10.1109/15.544310
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
General Motors Corporation
National Science Foundation (U.S.)
Keywords and Phrases
Attached Cables; Common-Mode Current; Common-Mode Radiation; Differential-Mode Current; Differential-Mode Voltage; Electromagnetic Interference; Fundamental EMI Source Mechanisms; Printed Circuit Boards; Printed Circuit Layout; Printed Circuit Layout Geometries; Production Printed-Circuit Design; Coaxial Cables; Integrated Circuit Layout; Mathematical Models; Printed Circuit Design; Electromagnetic Interference Mechanisms; Electromagnetic Wave Interference
International Standard Serial Number (ISSN)
Article - Journal
© 1996 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.