Coaxial horn antenna and its usage perspectives in ground-penetrating radar systems

Abstract

The design of a cylindrical coaxial horn antenna with a generatrix bend and the central conductor mounted along its axis is proposed. Two constructions types (varieties) of such antenna are studied. In the first case, such conductor is a metal-dielectric rod, which does not reach the throat of the horn. In the second one it is a copper rod, reaching the throat of the horn. Experimentally confirmed that for certain sizes of the rod such antenna constructions provide reduced width of the antenna pattern by 120 and allow to receive electromagnetic wave with arbitrary polarization.