Reducing radar cross section of TEM horn antenna component with predetermined radiation characteristics

To detect the radiating source, radio monitoring is used. In this case, probability of detecting the antenna system is defined by antennas radar cross section (RCS). Detection probability may be reduced through reducing antenna RCS. To reduce antennas RCS is an extremely difficult problem, as it requires ensuring the predetermined radiation characteristics. One of RCS reduction methods is using radar absorbing materials and coatings as described in [1]. Another possible method is using plasma antennas. Research of plasma antenna scattering characteristics is shown in [2]. This article considers possibilities of reducing radar cross section of TEM horn with predetermined radiation characteristics through changes of its shape. Results of electrodynamic modeling and measurements of main characteristics of TEM horns are provided.