Open Access

ARTICLE

Power Transfer via Metamaterials

by

1 University of Oxford, Oxford, UK

Computers, Materials & Continua 2013, 33(1), 1-18. https://doi.org/10.3970/cmc.2013.033.001

Abstract

Metamaterials offer new propagation modes for electromagnetic signals which have been explored as media for data exchange. They also offer a good prospect for efficient power transfer. This paper considers the limits on transferable power and their consequences in relation to magneto inductive waves in 1 and 2 dimensional magnetic metamaterial structures. The upper limit is found to be directly related to the voltage tolerance of capacitances used in the meta-material’s construction. Higher resonant frequencies offer better efficiency and higher maximum powers. For a proposed device operating in the Qi band (100-200k Hz) power transfer limits of 140 W are derived. The effects of finite length guides on performance and limitations imposed by standing waves and improper termination are explored.

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