Development of a Helicon Plasma Receiver for Wireless Power Transfer

Abstract

Typical research of long distance wireless power transfer systems is limited to electromagnetic waves, specifically microwave and laser systems. Plasma provides an appealing alternative due to its internal charge separation and current, as well as its potential for direction via magnetic field. To investigate this, a helicon plasma source at the University of Washington is used in conjunction with a modified Langmuir probe, which consists of two large separated electrodes. Plasma is fired at the electrodes, seeking to drive power over a resistive load. Measurements show a peak average power of 0.35 W in this experimental configuration. Improvements in electrode geometry are explored via electric field calculation and particle simulations. Results suggest that the technology is potentially viable with further optimization.