5W wireless power transmission system with coupled magnetic resonance

Author

Seong-Min Kim ; Cho, I.K. ; Moon, J.I. ; Jeon, S.I. ; Choi, Jung

Author_Institution

Radio & Broadcasting Res. Div., Electron. & Telecommun. Res. Inst., Daejeon, South Korea

fYear

2013

fDate

29-31 Oct. 2013

Firstpage

255

Lastpage

258

Abstract

In this paper, a 1.8MHz and 5W wireless power transmission system for a wireless smart storage using coupled magnetic resonances is presented. The proposed wireless power transmission system consists of the 20W class-F power transmitter, two magnetic resonance couplers and 50W full bridge diode rectifier receiver. The transmitter is composed of DDS(Direct Digital Synthesizer) block, class-F power amplifier and control block to implement the frequency and power setting by embedded MCU. Two magnetic resonance couplers are designed with a small spiral resonator. The diameter size of the transmitting spiral coil is 30cm and the receiving coil´s size is 7cm. The receiver is composed of full bridge diode rectifier, overvoltage protection (OVP) with active dummy load, DC to DC converter. The power consumption of the wireless smart storage is about 5W and the total power efficiency of this system is about 45%.

Keywords

UHF couplers; UHF resonators; magnetic resonance; microwave power transmission; DC to DC converter; DDS block; OVP; active dummy load; class-F power amplifier; class-F power transmitter; control block; coupled magnetic resonance; direct digital synthesizer block; embedded MCU; frequency 1.8 MHz; full bridge diode rectifier receiver; magnetic resonance couplers; overvoltage protection; power 20 W; power 5 W; power consumption; receiving coil; size 30 cm; size 7 cm; small spiral resonator; transmitting spiral coil; wireless power transmission system; wireless smart storage; Coils; Loss measurement; Magnetic resonance; Power transmission; Receivers; Transmitters; Wireless communication; Class-F; Coupled Magnetic Resonance; Full-bridge receiver; Power transmission system; Wireless power transmission;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE), 2013 IEEE 5th International Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-6077-7

Type

conf

DOI

10.1109/MAPE.2013.6689880

Filename

6689880