| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: in antenna containing reflecting mirror and deflector in the form of conical surface, the dimensions of aperture of reflecting mirror and the cone base of deflector of which coincide, as well as feed element, the reflecting mirror is parabolic, feed element is ultrabroadband and made in the form of conical spiral radiator of circular polarisation with conical diaphragm within the whole ultra high television band. Rings made from radar absorbent material are arranged along the edge of the reflecting mirror and on lower cone generatrix of deflector. Metal cone which is fixed on the screw is installed in the centre of reflecting parabolic mirror. Two additional in-series located metal annular screens are arranged on rear side of reflecting mirror. Coaxial cable is attached to helical feed element through a connector. ^ EFFECT: simplifying the manufacturing procedure of antenna, eliminating band limitedness and changing the shape of direction pattern in broad band in both planes. ^ 1 dwg |
