Experimental investigation of ground plane size on a high-gain antenna configuration

Dipole antennas exhibit a high-gain effect when covered by a high dielectric constant superstrate. This paper quantifies the effect of the ground plane size and demonstrates that the behavior of the antenna cannot be considered independently. It is found that the antenna acts as a cavity resonator (from the standpoint of the internal fields). Experimental results demonstrate that the high-gain effect shifts in frequency as a function of the ground plane´s radius.