Low-profile high-gain tilted-beam Fabry-Perot antenna

A low-profile high-gain Fabry-Perot (FP) antenna with tilted-beam is proposed in this paper. A novel partially reflective surface (PRS), consisting of square patches and mesh grids etched on both sides of dielectric substrate, is designed to operate at 10 GHz. In the proposed design, the sizes of square patches and mesh grids can be adjusted separately, which provides two methods to achieve tilted-beam: one is to vary the sizes of square patches to change the E-field phase distribution on the surface of PRS; the other is to change the dimensions of mesh grids to obtain tilted beam. Simulation results show that it can obtain a gain of 13.7 dBi for a 23° beam tilting and 13.4 dBi for a 27° beam tilting using the first and second method, respectively. This proposed antenna has the advantages of low profile, low cost and high gain, thus promising for fixed and tilted beam applications in mobile communication base stations and radars.