Investigation of fundamental EMI source mechanisms driving common-mode radiation from printed circuit boards with attached cables

Author

Hockanson, David M. ; Drewniak, James L. ; Hubing, Todd H. ; Van Doren, Thomas P. ; Sha, Fei ; Wilhelm, Michael J.

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Rolla, MO, USA

Volume

38

Issue

4

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

557

Lastpage

566

Abstract

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

Keywords

electromagnetic interference; printed circuit layout; attached cables; common-mode current; common-mode radiation; differential-mode current; differential-mode voltage; fundamental EMI source mechanisms; printed circuit boards; printed circuit layout geometries; production printed-circuit design; Cables; Circuit noise; Clocks; Electromagnetic compatibility; Electromagnetic interference; Geometry; Printed circuits; Production; Voltage; Wire;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.544310

Filename

544310