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http://dx.doi.org/10.5515/KJKIEES.2018.29.4.285

Smart Far-Field Wireless Power Transfer via Time Reversal  

Park, Hong Soo (School of Electronic Engineering, Soongsil University)
Hong, Ha Young (School of Electronic Engineering, Soongsil University)
Hong, Sun K. (School of Electronic Engineering, Soongsil University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.4, 2018 , pp. 285-289 More about this Journal
Abstract
In this paper, we demonstrate electromagnetic wave focusing and rectification based on time reversal as a smart method for far-field wireless power transfer. Time reversal in a complex propagation environment allows for transmission of high peak power pulses by focusing the electromagnetic waves selectively regardless of the receiver position. We demonstrate wave focusing and radio frequency (RF) to direct current (DC) rectification via numerical simulation of a complex propagation environment. The results reveal that time reversal can ensure peak power up to 12 dB greater compared to a narrowband continuous wave signal, thereby enhancing the rectified DC voltage with better efficiency.
Keywords
Wireless Power Transfer; Far-Field; Time Reversal; IoT; Complex Propagation Environment;
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1 김성민, 문정익, 조인귀, 윤재훈, 변우진, "무선전력전송 기술동향과 발전방향," 전자통신동향분석, 29(3), pp. 98-106, 2014년 6월.   DOI
2 D. L. Mascarenas, E. B. Flynn, M. D. Todd, T. G. Overly, K. M. Farinholt, and G. Park, et al., "Experimental studies of using wireless energy transmission for powering embedded sensor nodes," Journal of Sound and Vibration, vol. 329, no. 12, pp. 2421-2433, Jun. 2010.   DOI
3 X. Wang, S. Sha, J. He, L. Guo, and M. Lu, "Wireless power delivery to low-power mobile devices based on retro-reflective beamforming," IEEE Antennas and Wireless Propagation Letters, vol. 13, pp. 919-922, May 2014.
4 F. Cangialosi, T. Grover, P. Healey, T. Furman, A. Simon, and S. M. Anlage, "Time reversed electromagnetic wave propagation as a novel method of wireless power transfer," in 2016 IEEE Wireless Power Transfer Conference (WPTC), Aveiro, Jun. 2016, pp. 1-4.
5 S. K. Hong, V. M. Mendez, T. Koch, W. S. Wall, and S. M. Anlage, "Nonlinear electromagnetic time-reversal in an open semireverberant system," Physical Review Applied, vol. 2, no. 4, Oct. 2014.
6 G. Lerosy, J. De Rosny, A. Tourin, A. Derode, G. Montaldo, and M. Fink, "Time reversal of electromagnetic waves," Physical Review Letters, vol. 92, no. 19, p. 193904, May 2004.   DOI