Misalignment sensitivity and human body effects on wearable conformal SCMR system

A comprehensive study on the performance of a compact wearable Conformal Strongly Coupled Magnetic Resonance (CSCMR) system is presented in this paper. The wireless powering system consists of the receiver and load elements designed on a printed circuit board. Studies are performed with the receiver and transmitter element in free space, and when in contact with the human skin. In these operating environments, the power transfer efficiency is measured for two cases: (a) when the transmitter and receiver are aligned and (b) when the transmitter and receiver are misaligned. The results demonstrate the undesired user and angular misalignment effects on wearable CSCMR systems. These studies will provide critical information for future investigations that focus on improving the performance of wireless powering systems with applications in wearable devices and health monitoring.