An efficient wireless power transmission system using phase control of input electrode array for two-dimensional communication

The two-dimensional (2D) communication is a novel physical form of communication that utilizes the surface as a communication medium to provide data communication and contactless power transmission services to the devices. In the previous works, we have developed 2D communication system (2DCS) that allow the devices to simultaneously perform both data and power transmission wherever it is placed on the 2D sheet. From the viewpoint of the power transmission efficiency, it is not desirable that the microwave spreads over the place where the device doesn't put. Instead of spreading the electromagnetic wave thoroughly in the thin 2D sheet, we concentrate it only on the place where the device is put, by adjusting the phase of the multiple input signals. To largely strengthen the efficiency of power supply in the 2D communication, in this paper, we build up an efficient power transmission system by using phase control of input electrode array to converge the electromagnetic wave on a specific area in the 2D sheet, and evaluate its performance by both computer simulation and realistic measurement of the output power over the developed 2DCS.