Ultra-thin printed circuit board metamaterial for high efficiency wireless power transfer

Author

Yeonje Cho ; Hongseok Kim ; Chiuk Song ; Jinwook Song ; Dong-Hyun Kim ; Hyoungjun Kim ; Chulhun Seo ; Joungho Kim

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

fYear

2015

fDate

13-15 May 2015

Firstpage

1

Lastpage

3

Abstract

Metamaterial composed of artificial periodic structure is applied to a wireless power transfer system to enhance the efficiency of long distance power transfer. Metamaterial can control the direction of magnetic fields due to its negative permeability. Previously reported metamaterials were too thick and large in size to increase the power transfer distance. In this paper, ultra-thin (0.16 cm) and small (18.6 × 18.6 cm) metamaterial structure is proposed and its enhanced efficiency (with maximum of 44.2 % improvement) is demonstrated. Furthermore, this paper shows simplified modeling method for complicated metamaterial structure simulation.

Keywords

metamaterials; permeability; printed circuits; radiofrequency power transmission; artificial periodic structure; high-efficiency wireless power transfer system; long distance power transfer efficiency enhancement; negative permeability; size 0.16 cm; ultra-thin printed circuit board metamaterial structure; Magnetic fields; Magnetic materials; Metamaterials; Permeability; Permittivity; Slabs; Wireless communication; Metamaterials; efficiency; magnetic field; resonance; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Power Transfer Conference (WPTC), 2015 IEEE

Conference_Location

Boulder, CO

Type

conf

DOI

10.1109/WPT.2015.7140118

Filename

7140118