Abstract
The wireless power transmission system with the inverted L antennas printed on dielectric substrate is proposed and numerically analyzed. The end of center conductor of coplanar waveguide is extended so that the shape of antenna becomes rectangle. The design frequency is 2.45GHz. The size of the rectangular conductor plane is 36mm by 58.5mm, and the thickness of dielectric substrate is 2.4mm. When the distance between transmitting and receiving antennas is 10mm, the return loss frequency bandwidth less than -10dB is 38MHz and the same time, the power transfer efficiency becomes 79.41%. The power transfer efficiency is compared for different height of the antenna element.