WEH: Room-Scale Wireless Power Delivery via Quasi-Static Cavity Resonance

Wireless power offers the promise of seamlessly charging our electronic devices as easily as data is transmitted through the air. However, existing solutions are limited to near contact distances or low delivered power levels and thus, do not provide the geometric freedom and ease of use the term "wireless" suggests. This talk presents an overview of work on the use of resonant cavity modes to control magnetic field distribution in order to provide uniform wireless charging in large chambers and rooms. We introduced Quasi-Static Cavity Resonance (QSCR) as a means of enabling large purpose-built structures to generate near-field standing waves that safely deliver kilowatts of power to mobile receivers contained nearly anywhere within. Experimental demonstrations show that our 256 square foot, QSCR enabled room offers a unique charging experience where user's devices can be powered simply by entering the room.