A New Circularly Polarized Antenna Suppressing Surface Wave for Microwave Power Transmission

We proposed a new circularly polarized antenna which reduces the surface wave. The proposed antenna seems to be a combination of annular ring patch antenna and a patch antenna with shorted annular ring. The simulation results show that the proposed antenna can suppress the high order modes and improve the circular polarization characteristic than the conventional circularly polarized antenna with shorted annular ring. Moreover, it is feasible to integrate a rectifier on the same plane in the proposed antenna, whereas it is impossible in the conventional model due to the shorted wall.