Wireless Power Transfer at Distance

Wireless revolution in communication systems over the last several decades is beginning to move to the realm of energy transfer. Continuous energy transmission using proximity inductive charging is already available in many of our portable device [1]. Although it is technically wireless, the source and recipient of the energy still need to be within immediate proximity of each other, which leaves most of the wireless power application space unaddressed. This need drives the development of wireless power transfer at distance (WPT-AD) [2].