Wireless Power Transfer via Magnetic Resonant Coupling by using Printed Circular Coil

Abstract

Nowadays, wiring connections are slowly fade out and replace with wireless connection due to the inconvenient of installing wiring connection in the wall or exposes to outside. Lately, the demand of wireless charging mobile phone or even charging by wireless in the car is attracted attention and the statistic shows that it is increasing rapidly. These paper proposed by using planar type spiral coil structure method to transfer the electrical signal energy to receiver part so as to act as wireless charging. It represented by 2 parallel FR4 printed circuit board that with the layout of planar spiral coil mutually coupled together in the free space. Analysis of electromagnetic transfer between both spiral coil and the resonant frequency was compute by coupled inductance theory. Simulations by using Advanced Design Systems based on coupling theory shows that when the air gap distance is changing, it will affecting the electromagnetic coupling efficiency of the wireless electromagnetic charging.