Efficiency of a 3D Metallic Antenna on top of Finite Ground Plane and Soil

Spectral Smoothness of Ground Plane Backed Log-Periodic Dipole Antennas for Radioastronomical Applications

“…In this study, the antennas and ground plane are assumed to be perfect electric conductors, while the dielectric soil volume underlying the ground plane is omitted. As examined in other works [8,11], the spectral impurities due to ohmic losses are insignifcant for all but the lateral antennas of a ground-plane backed array and at the lower extreme of our frequency band, while at the same time, including them is computationally expensive. For these reasons, gains are identical to directivities, and the radiation efciency is unit.…”

“…Tese simulations usually assume an infnite ground plane in order to ease the computational burden, an approximation which is in general valid for high frequencies (and thus electrically large structures). Simulations, including the fnite ground plane, have only been performed in some recent works [6][7][8], with the limitation of examining the antenna pattern in certain selected frequencies or just the isolated antenna. In this work, we emphasize on the spectral properties of the ground plane-induced efects examining zenith gain patterns over frequency.…”