Characteristics of quasi-isotropic radiators located on a semi-spherical protuberance on the screen

Deals with two types of antennas situated on a semi-spherical lug over perfectly conducting infinite plane screen: circular slot antenna and asymmetric dipole excited at its base. It should be noted that in terms of application of quasi-isotropic antennas for objects with orientation in space varying over a wide range, the case of axially symmetric excitation of the circular slot antenna is a matter of interest. The fields of radiation of the antennas in question when they are situated on a perfectly conducting sphere have been studied before. However, the analysis of the fields of radiation of such antennas on a semi-spherical lug over a screen is not available in the known literature on the subject.