Analysis on transmission efficiency of wireless energy transmission resonator based on magnetic resonance

Author

Choi, Jaewon ; Cho, Jun-Kyung ; Seo, Chulhun

Author_Institution

Wireless Commun. RF Syst. Lab., Soongsil Univ., Seoul, South Korea

fYear

2011

Firstpage

199

Lastpage

202

Abstract

In this paper, a high-efficiency wireless energy transmission via magnetic resonance is experimentally implemented in a resonator with the various sizes of transmitting and receiving coils and the receiving coil having two shapes of rectangular and circular types. The transmission efficiency is analyzed by varying the transmission distance. The resonance between the transmitting and receiving coils is achieved with lumped capacitors terminating the coils. The transmission efficiency of the resonator consisted of the circular transmitting coil with the diameter of 60 cm and rectangular receiving coil with the length of one side of 10 cm is about 80 % at the transmission distance of 20 cm. The transmission efficiencies of the wireless energy transmission resonator consisted of the receiving coil with the size of iPhone4 are about 75 % and 40 % at the transmission distances of 20 cm and 50 cm.

Keywords

coils; inductive power transmission; magnetic resonance; power supplies to apparatus; receivers; transmitters; distance 20 cm; distance 50 cm; magnetic resonance; receiving coils; transmission efficiency; transmitting coils; wireless energy transmission resonator; Capacitance; Capacitors; Coils; Couplings; Energy measurement; Scattering parameters; Wireless communication; Wireless energy transmission; high-efficiency; magnetic resonance; resonator; transmission distance;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2011 IEEE MTT-S International

Conference_Location

Uji, Kyoto

ISSN

2157-362X

Print_ISBN

978-1-61284-214-1

Type

conf

DOI

10.1109/IMWS.2011.5877128

Filename

5877128