Radiation Pattern Reconfigurable Horn Antenna

A radiation pattern reconfigurable horn antenna (RHA) capable of steering its main beam in three directions in the semi-sphere space corresponding to θ ∈ {-25°, 0°, 25°}, is presented. The RHA consists of a driven X-band (10 GHz-11.5 GHz) horn antenna, a reconfigurable parasitic layer and a dielectric loaded truncated pyramid (DLTP). The surface of the parasitic layer has two metallic strips and a grid of 4x4 square metallic pixels, which are interconnected by PIN diode switches, thereby enable configuring the surface geometry. The simulated results indicate that from 10 GHz to 11.5 GHz realized gain of ~ 14 dB is achieved in all modes of operation.