Development of wireless power transfer antenna by sandwiched structure

Abstract

　Wireless power transfer that supply electric energy without wires is attracting the attention now. Many of the technologies use magnetic or electric field, but it have common problems that transmission efficiency depend on transmission distance. Therefore, we propose “sandwiched structure antenna” which having two pair of transmission antennas and reception antennas. Using the new structure, transmission efficiency can be made substantially constant inside a confined space.