Channel-based Phase and Power Controllable Intelligent Wireless Power Transfer Architecture Using 4 by 4 Planar Array Antennas

In this paper, channel-based phase and power controllable intelligent wireless power transfer architecture using 4×4 planar array antennas is proposed for wireless sensor network (WSN) applications. In order to obtain high power transfer efficiency, each antenna’s phase and power in the arrayed transmitting antenna can be controlled. This results in a variable beam pattern and power. A phase shifted value to perform beam steering was calculated by utilizing antenna array factor. A frequency of radiated power into the air is 2.4 GHz monotone power.