A High-Gain Fabry-Perot Antenna with Broadband Low-RCS

By loading a broadband Low-RCS metasurface as a partially reflective surface (PRS), an Fabry-Perot antenna (FPA) with broadband RCS reduction is proposed. The three metasurface unit cells are composed of three dielectric layers and one or more metal layers between the dielectric layers. By loading this broadband Low-RCS metasurface, not only the broadband RCS reduction of 6.2-30GHz is achieved, extending the reduced bandwidth of RCS, but also the gain of the proposed FPA is increased to 19.6dBi.