Design For Electromagnetic Compatibility

This chapter discusses design for electromagnetic compatibility (EMC) in the design of electrical and electronic equipment. We first describe how the subject of EMC divides into ‘emissions’ and ‘immunity’, discuss the implications of the European EMC Directive, and stress the importance of considering EMC at all stages of the design of equipment. The next section gives practical design advice on system level design, partitioning, shielding of enclosures, cables, printed circuit boards, use of filters, circuit design (analogue, digital and power) and software. Finally we discuss the use of computer-aided engineering tools for EMC, explaining the different types, where they can be applied and what they cost.