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| Research on Electromagnetic Environment to Chest via Witricity |
| Zhao Jun1, Yang Xinsheng1, Xu Guizhi1, Li Yang2 |
1. Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China
2. Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology Tianjin Polytechnic University Tianjin 300387 China |
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Abstract Magnetic coupling resonance wireless energy transmission(Wireless electricity, Witricity) is a new technology put forward by MIT in 2007.Witricity achieves middle distance wireless energy transmission through magnetic coupling resonance and it has good application prospect in the field of implantable devices. The specific absorption rate (SAR) is applied to express the magnitude of electromagnetic energy which is absorbed by local tissue of human body. In this paper a small size resonator was designed and the experiment results show that the small size Witricity system can transmit energy well. The SAR is calculated by finite difference time domain (FDTD) method through building 3D numerical model of chest and implantable coil. Results show that when transporting energy to chest implantable devices via Witricity, the maximum SAR value for 1g and 10g organism are 0.454?3W/kg and 1.072?9W/kg respectively which are both below international limit value.
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Received: 23 May 2013
Published: 22 May 2014
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| Fund:Supported by Key Basic Research Project of Hebei Applied Basic Research Program contract(11965628D), Tianjin Application Foundation and Advanced Technology Research Program contract (11JCZDJC1700), and National Science Foundation of China Program contract (1207106) |
| About author:: Zhao Jun Female, Born in 1981, Doctor, Her research is wireless energy transmission.Yang Xinsheng Male, Born in 1986, Second grade postgraduate, his research is wireless energy transmission. |
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2013, Vol. 28 
