EMC/I Analysis of Miniaturized Bio-Mechanical Sports Wearables

Abstract

This paper presents an optimized miniaturized bio-mechanical sports wearable PCB layout in compliance to effective electromagnetic compatibility (EMC) design principles. Separate ground plane is introduced using polygon pour and decoupling capacitor problem is addressed. Long traces carrying high frequency signals, which also become a source of un-intentional radiations, are minimized. Efforts are made to decrease loop area and to separate digital and analog signal traces. These modifications result in 32.45% reduction in Specific absorption rate (SAR). In order to further decrease SAR, carbon nano-filament based electromagnetic absorbing material sheet is incorporated. It caused an additional 85.86% reduction in SAR.