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http://dx.doi.org/10.5573/ieie.2015.52.6.043

High Efficiency Magnetic Resonance Wireless Power Transfer System and Battery Charging Chip  

Youn, Jin Hwan (Department of Electronics Engineering, Kyungpook National University)
Park, Seong Yeol (Department of Electronics Engineering, Kyungpook National University)
Choi, Jun Rim (Department of Electronics Engineering, Kyungpook National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.6, 2015 , pp. 43-49 More about this Journal
Abstract
In this paper, we propose enhanced wireless power transfer system based on magnetic resonance for portable electronic device charging. Resonators were designed and fabricated for efficiency improvement and miniaturization through electromagnetism simulation using HFSS(High Frequency Structure Simulator). Impedance matching network is employed to minimize reflections that is caused by difference between input impedance and output impedance. Receiver IC that consist of rectifier and Low Drop Out(LDO) regulator were designed and fabricated to reduce power loss. This chip is implemented in $0.35{\mu}m$ BCD technology. A maximum overall efficiency of 73.8% is determined for the system through experimental verification.
Keywords
Wireless Power Transfer; Magnetic Resonance; Received Power Conversion; System on Chip;
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