Minimizing RF PCB electromagne...

Minimizing RF PCB electromagnetic emissionstutorial

Minimizing RF PCB electromagnetic emissions
Looking for a way to reduce unwanted signal emission from transceivers? One method is to use appropriate PCB layout techniques, including mechanical shielding.

By Sean Mercer, Ph.D., C.Eng

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ost countries regulate the permissible levels of signal conduction and/or radiation from RF equipment. Therefore, it is important to consider electromagnetic emissions and susceptibility issues during the product design cycle. This prevents costly and potentially time-consuming fixes toward the end of a development cycle. To reduce the likelihood of undesirable emissions emanating from your product, many design strategies, including simple modeling, can be used [1, 2]. The use of component shielding and shielded printed circuit board (PCB) traces