New structure for high Q-factor printed antenna in wireless power transmission

In this paper, a new and novel printed structure is proposed to obtain high quality factor (Q-factor) coil antenna in wireless power transmission system. The main idea to achieve high quality factor is “adjusted line pitch and width” with respect to outer diameters. The line pitch and width of the printed pattern are gradually increased in proportion with outer diameter. By using this design method, the Q-factor is increased about 21.8% in comparison with conventionally designed antenna.