Swarun Kumar

This paper proposes MetaPower, a design of a magnetic resonance-based wireless power transfer system that integrates capacitive electrodes and metasurface, capable of locating devices and focusing energy towards them for smart charging. Our design builds on the fact that magnetic resonators generate strong localized magnetic fields with lensing effects. We leverage this principle to control the energy distribution by applying different equivalent permeability and phase profiles on our metasurface arrays on each cell. We show how our surface offers improved features and safety guarantees over conventional wireless charging methods, enabling programmability in the transferred power distribution based on the target device's location. Consider, for example, a metasurface-enabled table that automatically detects a tagged device and then actively focuses energy in the near-field based on the object location. We present a detailed design of MetaPower's target localization and near-field magnetic focusing through HFSS and MATLAB simulations. We also present preliminary results from a proof-of-concept implementation of the localization electrodes, and discuss the system-level surface implementation for future work.