2022•2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)Requires access
Watt-Level Low-SAR Near-Field Wearable Wireless Power Transfer using an All-Textile Receiver
Mahmoud Wagih, Abiodun Komolafe, Alex S. Weddell, Steve Beeby
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Abstract
Near-field radiative Wireless Power Transfer (WPT) has the advantage of high-power WPT. In this paper, an all-textile high-power WPT receiver is realized for the first time, using an embroidered coil and a printed tuning capacitor on a textile substrate. The proposed coil is demonstrated receiving over 3 W DC power at 6.78 MHz with a 23% end-to-end efficiency. A low Specific Absorption Rate (SAR) of 0.37 W/kg is observed, through full-wave simulation, for up to 10 W high-frequency input to the on-body coil, demonstrating its suitability for wearable applications.