Electrodynamic characteristics of impedance dipole located over ideally conducting rectangular screen

The 3D vector problem of diffraction of the field of a thin half-wave impedance dipole located over an ideally conducting infinitely thin rectangular screen is considered. On the basis of the asymptotic solution of this problem, fast algorithms and programs are developed for computation of spatial patterns, the directive gain, and the radiation resistance versus the real and imaginary parts of surface dipole impedance. It is shown that changing the dipole´s impedance essentially influences on the squared absolute value of the field, the directive gain obtained for a screen´s normal and the radiation resistance.