NDLI: Cooling structure for EMC shielded high frequency electronics

Content Provider	IEEE Xplore Digital Library
Author	Siebert, W.P.
Copyright Year	1999
Abstract	Cooling of electronics is normally achieved using air passing through apertures in the enclosure; as a result the shielding effectiveness of the shielded enclosure is reduced. In this paper, the design of a new cooling structure and its evaluation in a wind tunnel is presented. The developed design presented here is a double heat sink in extruded aluminum. Into one side of the heat sink, the printed circuit boards (PCBs) are inserted and enclosed by a complementary shielding surface. The other side of the heat sink is cooled by forced ventilation. The heat transport between these parts is completely inside the same body, without any heat flow interruptions. Tests carried out on a prototype have shown that the performance of the cooling structure is satisfactory for electronic cooling. An additional electromagnetic compatibility (EMC)-test has also elucidated the satisfactory shielding effectiveness of the structure. The cooling structure is scaleable and can accommodate for both future smaller printed circuit boards (PCBs) and those of today. The entire enclosure is furthermore based on near-standard items, which allows it to be inexpensive in high volume production.
Sponsorship	IEEE Components, Packaging, and Manufacturing Technology Society
Starting Page	155
Ending Page	163
Page Count	9
File Size	1469752
File Format	PDF
ISSN	15213331
Volume Number	29
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electronics cooling Electromagnetic compatibility Frequency Heat sinks Printed circuits Apertures Aluminum Ventilation Electronic equipment testing Circuit testing shielding Electronic electromagnetic compatibility (EMC) heat sink high frequency
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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