EMC design principles

Grounding, shielding, filtering and cabling/wiring are important design criteria to achieve EMC on the equipment level. In order to avoid costly overkill solutions and to tailor individual measures in the case of contradicting requirements, they must not be understood as cookbook style recipes but their application must be based on sound theoretical principles. A sound knowledge of electromagnetic theory is essential to understand and appreciate EMC measures, and not consider them as magical spells that have to be put on machines to make them work. However emphasis is placed on conceptual understanding not on formulas and equations. So, this talk refreshes electromagnetic theory in a nutshell, but avoids the mathematical burden. The nature of electric and magnetic dipoles, estimation of current flow in ground planes, EMC characteristics of transmission lines are some of the topics that covered in this presentation.