Wireless energy transfer by using 1.8 MHz magnetic resonance coils considering limiting human exposure to EM fields

Author

In-Kui Cho ; Seong-Min Kim ; Jeong-Ik Moon ; Jae-Hun Yoon ; Woo-Jin Byun ; Jae-ick Choi

Author_Institution

Radio & Broadcasting Res. Div., ETRI, Daejeon, South Korea

fYear

2012

fDate

25-28 June 2012

Firstpage

1

Lastpage

2

Abstract

A wireless power transfer system for 1.8 MHz, 20W LED display board is presented. Coupled magnetic resonance method is used for wireless power transfer and the operating frequency is selected by considering guidelines for limiting human exposure to electromagnetic fields. The power consumption of the LED display board is about 20W and the entire efficiency of this WPT system is 50.5%. The strength of magnetic field around the system is below the reference level of ICNIRP(1998).

Keywords

LED displays; coils; inductive power transmission; magnetic resonance; transmitters; EM field; ICNIRP reference level; LED display board; coupled magnetic resonance method; frequency 1.8 MHz; human exposure; magnetic resonance coil; power 20 W; power consumption; wireless energy transfer; wireless power transfer system; Coils; Energy exchange; Light emitting diodes; Magnetic resonance; Radio frequency; Wireless communication; frequency separation; magnetic resonance; power transmitter; rectifier; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on

Conference_Location

Toulouse

Print_ISBN

978-1-4673-0290-6

Type

conf

DOI

10.1109/ANTEM.2012.6262289

Filename

6262289