Title :
Magnetic near-field focusing and optimal wireless power transfer
Author :
Lang, Hans-Dieter ; Ludwig, Alon ; Sarris, Costas D.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
The relation between subwavelength focusing near-field arrays and arrays designed to maximize power transfer efficiency is investigated. The intuitive expectation that magnetic field focusing around the receiver may maximize power transfer efficiency is not confirmed, when the fields of capacitively loaded loop arrays, designed for optimal power transfer efficiency, are analyzed. The significant role of loss is outlined and interesting aspects of the underlying physics are illustrated.
Keywords :
inductive power transmission; receivers; magnetic near-field focusing; optimal power transfer efficiency; receiver; wireless power transfer; Conductors; Focusing; Impedance; Propagation losses; Receivers; Transmitters; Wireless communication;
Conference_Titel :
Wireless Power Transfer Conference (WPTC), 2015 IEEE
Conference_Location :
Boulder, CO
DOI :
10.1109/WPT.2015.7140128
