FDTD modeling of heatsink RF characteristics for EMC mitigation

Author

Ryan, Nick J. ; Chambers, Barry ; Stone, D.A.

Author_Institution

Dept. of Eng., Univ. of Aberdeen, UK

Volume

44

Issue

3

fYear

2002

fDate

8/1/2002 12:00:00 AM

Firstpage

458

Lastpage

465

Abstract

Due to their size and complex geometry, large heatsinks such as those used in the power electronics industry may enhance the radiated emissions produced by the circuits employing them. Such enhancement of the radio frequency (rf) radiation could cause the equipment to malfunction or to contravene current EMC regulations. In this paper, the electromagnetic resonant effects of heatsinks are examined using the finite-difference time-domain (FDTD) method and recommendations are made concerning the optimum geometry of heatsinks and the placement of components so as to mitigate potential EMC effects.

Keywords

electromagnetic compatibility; finite difference time-domain analysis; heat sinks; interference suppression; power electronics; radiofrequency interference; EMC mitigation; FDTD modeling; components placement; electromagnetic resonant effects; equipment malfunction; finite-difference time-domain method; heatsink RF characteristics; optimum geometry; power electronics; radiated emissions; Circuits; Electromagnetic compatibility; Electromagnetic heating; Electromagnetic radiation; Electronics industry; Finite difference methods; Geometry; Power electronics; Radio frequency; Time domain analysis;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2002.801759

Filename

1026399