References:
http://batteryuniversity.com/learn/article/charging_without_wires
http://cdn-cw.mediatek.com/Mediatek_Wireless_Charging.pdf
http://www.witricity.com/assets/highly-resonant-power-transfer-kesler-witricity-2013.pdf
http://cdn-cw.mediatek.com/Mediatek_Wireless_Charging.pdf
http://electronics.howstuffworks.com/everyday-tech/wireless-power3.htm
http://www.ijettjournal.org/volume-12/number-7/IJETT-V12P266.pdf
http://www.extremetech.com/electronics/137729-how-wireless-charging-works
http://www.technologyreview.com/news/406878/charging-batteries-without-wires/page/2
http://powerbyproxi.com/wireless-charging/
http://www.forbes.com/sites/ewanspence/2014/12/09/how-it-works-wireless-charging/
http://fortune.com/2014/07/29/within-grasp-a-world-without-wires/
http://www.wirelesspowerconsortium.com/about/benefits.html
https://www.rezence.com/technology/wireless-power-radio-frequency
https://standards.ce.org/kwspub/published_docs/CEA-TR-2_FINAL.pdf
http://d-scholarship.pitt.edu/8478/1/Harrist_Thesis_072804.pdf
http://www.mouser.sg/applications/rf_energy_harvesting/
http://www.qiwireless.com/tesla-inspired-metamaterial-converts-900-mhz-microwaves-power/
