Variants of volume self-complementary antennas

Variants of volume self-complementary antennas (conic, parabolic et al.) are considered. Method of their analysis is described. Electrical characteristics depending on frequency are calculated and measured in models. Properties of different volume antennas are compared with each other and with properties of flat self-complementary antennas. It is shown that the volume self-complementary antennas allow operating at longer wavelengths and that increasing the generatrix length causes an improvement of the electrical characteristics.