A novel method for omnidirectional wireless power transmission

Author

Bang-Jun Che ; Fan-Yi Meng ; Yue-Long Lv ; Qun Wu

Author_Institution

Dept. of Microwave Eng., Harbin Inst. of Technol., Harbin, China

fYear

2014

fDate

26-29 July 2014

Firstpage

839

Lastpage

841

Abstract

In this paper, a novel method for omnidirectional wireless power transmission (OWPT) via magnetic resonant coupling is proposed. In the proposed OWPT, a pair of cross coil consists of two orthogonal loops with 90° feeding phase difference serve as the wireless power transmitter. Through both theoretical analyses and numerical simulations, it is shown that, rotating magnetic field is generated and wireless power is achieved on receiver moving around the transmitter. Then a cylindrical metamaterial slab with negative permeability is designed to improve the efficiency of the OWPT system, for the unique property of enhancing evanescent wave of metamaterials. The simulation results show that the efficiency of the OWPT can be significantly improved by the metamaterial slab.

Keywords

inductive power transmission; metamaterials; OWPT; cylindrical metamaterial slab; magnetic resonant coupling; negative permeability; omnidirectional wireless power transmission; rotating magnetic field; Magnetic fields; Magnetic materials; Magnetic resonance; Metamaterials; Receivers; Transmitters; Wireless communication; metamaterial; omnidirectional; rotating magnetic field; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-4355-5

Type

conf

DOI

10.1109/APCAP.2014.6992629

Filename

6992629