Electrodynamic models of biconical, TEM-horn type antenna

Abstract

The increase of interest in broadband antennas is connected with the expansion of frequency range of satellite communication systems. The object of our research is a broadband antenna of quasi-pyramidal horn type without side walls (T-horn). The given antenna may be used in the capacity of excitation source of a parabolic antenna or in the capacity of an antenna array element. The basic excited wave for such an antenna is TEM-wave. We examine two independent models of the antenna. The first is static, it is based on idea of TEM-horn as a part of infinite biconical line with current distribution and follows the travelling wave law. The second model is based on spectral presentation of electromagnetic field when solving integral equation for boundary problem.