Electromagnetic Shielding: Concepts and Applications

November 3, 2021 @ 4:00 pm – 5:30 pm America/New York Timezone

Electromagnetic Compatibility Society – 4:00PM – Wednesday, November 3

Electromagnetic Shielding: Concepts and Applications

Speaker: Dr. Sergiu Radu of Oracle

Every electronic equipment use some type of shielding, and from a theoretical point of view,  electromagnetic shielding is among the difficult areas of EMC. The presentations is introducing basic shielding concepts, insisting on their practical limitations, and presents the typical engineering problems associated with shielding. Among the aspects discussed are the materials used for shielding, chassis resonances, shielding integrity problems (seams, joints, apertures, perf patterns, etc.), aperture coupling and shield’s grounding.


1. Introduction: Electric, Magnetic and Electromagnetic shielding
2. Analytical approaches to shielding: field theory (Kaden) and circuit theory (Schelkunoff)
3. Limits of the theoretical approaches: numerical simulations
4. Practical aspects of shielding, typical requirements, grounding scheme
5. Shield material: metal, plastic, typical coatings
6. Shield construction: rivets, joints, seams, apertures
7. Shielding and thermal issues: holes, perf patterns, honeycomb
8. Shield integrity and gaskets
9. Internal compartmentalization of a chassis, resonances
10. Practical aspects of source – aperture coupling
11. Shielding for radiated emissions, radiated immunity and ESD – reciprocity aspects and limits
12. Evaluation of shielding effectiveness

Biography: Sergiu Radu (M’93, SM’02) received the M.S. and Ph.D. degrees in electrical engineering (Electronics) from the Technical University of Iasi, Iasi, Romania in 1980 and 1995, respectively. He was an Associate Professor at the Technical University of Iasi until 1996, involved in Electromagnetic Compatibility teaching and research. From 1996 to 1998, he was a Visiting Scholar at the University of Missouri at Rolla, currently Missouri University of Science and Technology, as part of the Electromagnetic Compatibility Laboratory. In 1998, he joined the Electromagnetic Compatibility Engineering group at Sun Microsystems, which became a part of Oracle Corp. in 2010. He is currently Director of Hardware Development at Oracle leading the EMC Design group in Santa Clara, CA., involved in chassis level, PCB level and chip level EMC design for all Oracle hardware products. His role includes also the development and implementation of platform level EMC Design architecture, design methodologies, and better EMC prediction techniques. He holds seven US patents for EMI reduction techniques in electronic systems and has published more than 50 technical papers, presentations and reports on electromagnetic compatibility related subjects. He is NARTE Certified EMC Engineer since February 1998, a former IEEE EMC Distinguished Lecturer (2009-2010), and a reviewer for IEEE Transactions on EMC. ORCID (Open Researcher and Contributor ID): https://orcid.org/0000-0002-1733-1151

Meeting Details:

Topic: IEEE EMC Chapter meeting –
Time: November 3, 2021 04:00 PM Eastern Time

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