Title :
Wireless power transfer for mobile devices with consideration of ground effect
Author :
Van Thuan Nguyen ; Seok Hyon Kang ; Chang Won Jung
Author_Institution :
Seoul Nat. Univ. of Sci. & Technol., Seoul, South Korea
Abstract :
In this study, a wireless power transfer (WPT) system including three coils and working at 6.78 MHz is investigated. By employing a 2 × 3 metamaterial (MTM) array, the efficiency of the proposed WPT system is significantly enhanced. Experiments show that with the MTM array, a maximum efficiency improvement of 27 % is achieved at transfer distance of 35 cm. The impact of ground plane on the transfer efficiency is also studied. Several methods to reduce this impact are discussed and measured.
Keywords :
electromagnetic metamaterials; mobile handsets; radiofrequency power transmission; ground effect; metamaterial array; mobile devices; wireless power transfer; Arrays; Coils; Copper; Magnetic materials; Metamaterials; Resonant frequency; Wireless communication; Ground effect; metamaterial; wireless power transfer;
Conference_Titel :
Wireless Power Transfer Conference (WPTC), 2015 IEEE
Conference_Location :
Boulder, CO
DOI :
10.1109/WPT.2015.7140113
