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A comprehensive review of printed circuit board (PCB) electromagnetic compatibility (EMC) issues, analysis techniques, and possible solutions would fill a large book or more. This review takes a quick look at where the technology of PCB EMC control has been, where it is today, and where it needs to go for the future. As data rates on PCBs have increased, new problems have arisen, requiring new analysis techniques and new solutions. Further development will be needed to keep up with the ever-increasing data rates and smaller form factors.