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Directive Gain and Radiation Resistance of Vertical Dipole Placed over Rectangular Metal Screen

The 3D asymptotic solution of a problem of diffraction of a field of a half-wave dipole located over a rectangular metal screen perpendicularly to it, has been used to develop the fast-active algorithm and software and calculate the directive gain in the maximum radiation and the radiation resistance of this radiating system. Analysis of the directive gain has been carried out depending on the screen side length, the dipole to screen distance at various screen side ratios. The corresponding radiation resistances were defined. It have been found the maximum values of directive gain and corresponding observation angles, the radiation resistances, dipole to screen distances and the screen side's ratio vs. the screen width. There are shown that the directive gain increase with increasing the screen side at optimal side's ratio and dipole to screen distance. For verification, the results were compared with calculations based on the method of moments.