[2] N SHINOHARA. Power without wires. IEEE Microwave Magazine, 12, 64-73(2011).
[6] Liang TANG, Yuanchang ZHONG, Chengxiang ZHANG et al. Research situation and development trend of laser wireless power transmission key technology. Laser Journal, 28-32(2017).
[8] W C BROWN. Adapting microwave techniques to help solve future energy problems. IEEE Transactions on Microwave Theory and Techniques, 21, 753-763(2010).
[9] P E GLASER. Power from the sun: its future. Science, 162, 857-886(1968).
[10] B Y DUAN. The updated ssps-omega design project and the latest development of China.
[11] I G MORABITO. The internet of things: a survey. Computer Networks, 54, 2787-2805(2010).
[12] S PRIYA, D J INMAN. Energy harvesting technologies. Springer US(2009).
[21] L SHAFAI, A A KISHK, A SEBAK. Near field focusing of apertures and reflector antennas.
[22] J BOR, S CLAUZIER, O LAFOND et al. 60GHz foam-based antenna for near-field focusing. Electronics Letters, 50, 571-572(2015).
[89] L ZHANG, Q CHEN, S LIU et al. Space-time-coding digital metasurfaces. Nature Communications, 9, 4334(2018).