Circuit Design Techniques for Electromagnetic Compliance

Tom Page*
*Lecturer,Department of Design and Technology ,Loughborough University,Loughborough,Leics,UK.
**Senior Lecturer,Manufacturing systems Engineering,University of East London,UK.
Periodicity:January - March'2008
DOI : https://doi.org/10.26634/jee.1.3.402

Abstract

Recent regulations have demanded that electronics manufacturing companies control emissions from their products and the susceptibility of their products to emissions from other products.  In addition, unexpected product failure and the ever-present demands of technology are also forcing the electronics industry to face the need to maintain electrical integrity.

Our investigations into high-speed design techniques have shown three major causes of failure: emissions from interconnecting conductors; poor PCB layout and lack of technical knowledge in electromagnetic compatibility (EMC).  Catching these kinds of electrical integrity problems early in the design phase allows designers to take timely action without jeopardising project time scales.  The work reported here presents design for manufacturing guidelines and rules to maintain electrical integrity in printed circuit boards (PCBs).  Currently, a common method for handling EMC is through compliance testing of the final product.  Similarly, noise budget is measured on finished prototypes.  Since product life cycles are reducing, dealing with EMC late in the design cycle is undesirable.  The cost of fixing may also be higher at a final stage because only a few options are available to correct the problem.  A ‘find and fix’ approach is no longer acceptable anymore.

More and more companies are facing or will soon be facing EMC and electrical integrity issues.  The majority of analysis tools available today are targeted toward simulation engineers.  Such tools are not easy to use and are dependent on the availability and accuracy of complex simulation models.  Moreover, they also tend to be ineffective on how to correct potential EMC problems.

Keywords

Design for Manufacture, EMC, PCB Design.

How to Cite this Article?

Tom Page (2008). Circuit Design Techniques for Electromagnetic Compliance. i-manager’s Journal on Electrical Engineering, 1(3), Jan-Mar 2008, Print ISSN 0973-8835, E-ISSN 2230-7176, pp. 1-6. https://doi.org/10.26634/jee.1.3.402

References

[1]. Anzivino, R., (2002): The DFA Design Philosophy, Printed Circuit Design, pp. 14-26.
[2]. Atiyeh, R G., (2003): Design for Assembly: Sometimes More is Less, Assembly Automation Vol. 12 No. 2, pp. 26-40.
[3]. Classon, F., (2003): Component Placement, Surface Mount Technology Vol. 8, No. 4. Pp.45-62.
[4]. Thorsteinsson, G. and Page, I, (2007) A Methodology for Digital Design, Society of Manufacturing Engineers (SME), Dearborn, Mi, USA, Technical Paper (TP07PUB202), ppl-10.

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