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Omnidirectional wireless power transfer system supporting mobile devices

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Abstract

An efficient method for the challenge design of an omnidirectional wireless power transfer system (OWPT) is proposed. The OWPT is realized utilizing the rotating magnetic field, which is generated by the proposed 2-D transmitter. The transmitter is composed by two mutually perpendicular loops fed by two excitation sources with the same magnitude and 90° phase difference. An OWPT system prototype is fabricated and measured. Experimental results demonstrate that the system can deliver power to receivers moving around the transmitter with a steady transfer efficiency. Furthermore, the magnitude distribution of the rotating magnetic field can be controlled by the feeding phase difference between the two loops. This capability enables the OWPT system to focus energy for device moving in a limited receiving angle range.

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Authors and Affiliations

  1. Department of Microwave Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Bang-Jun Che, Fan-Yi Meng, Yue-Long Lyu, Wen-Liang Zhu, Kuang Zhang, Guo-Hui Yang, Jia-Hui Fu, Lei Zhu & Qun Wu

  2. The State Key Laboratory of Millimeter Waves, Nanjing, 210096, China

    Fan-Yi Meng

  3. Department of Electrical Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Li Sun

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  1. Bang-Jun Che
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  2. Fan-Yi Meng
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  3. Yue-Long Lyu
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  4. Wen-Liang Zhu
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  5. Kuang Zhang
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  6. Guo-Hui Yang
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  7. Jia-Hui Fu
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  8. Lei Zhu
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  9. Qun Wu
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  10. Li Sun
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Correspondence to Fan-Yi Meng.

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Che, BJ., Meng, FY., Lyu, YL. et al. Omnidirectional wireless power transfer system supporting mobile devices. Appl. Phys. A 122, 54 (2016). https://doi.org/10.1007/s00339-015-9573-6

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  • DOI: https://doi.org/10.1007/s00339-015-9573-6

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