AXISYMMETRIC MULTIBAND MULTIMIRROR ANTENNA Russian patent published in 2022 - IPC H01Q5/30 

FIELD: antenna technology.

SUBSTANCE: invention relates to antenna technology, in particular to antennas of earth stations of satellite communication systems with repeaters of the microwave-EHF bands. The effect is achieved by the fact that the axisymmetric antenna, consisting of three feeds, the main reflector with a generatrix in the form of a parabola, symmetrical about its focal axis, and an auxiliary counter-reflector, coaxial to the parabola, is characterized in that the counter-reflector has the shape of a parabola, concave away from the reflector, moreover, the focal axis of this parabola is both the axis of axial symmetry of the antenna and the axis of symmetry of the counter-reflector, and the feed of the first frequency range is installed in its focus, an axisymmetric secondary reflector with a cross section similar to the reflector section and a diameter equal to the diameter of the counter-reflector, as well as a secondary counter-reflector with a cross section in the form of an ellipse, the focal axis of which coincides with the axis of axial symmetry of the antenna, is installed coaxially on the focal axis of the reflector, in the focus of the ellipse, far from at the top of the secondary reflector and coinciding with its focus, the feed of the second frequency range is installed, and at the focus of the ellipse, closest to the top of the secondary reflector, the feed of the third frequency range is installed.

EFFECT: improving the efficiency of the antenna while simultaneously receiving radio waves of three frequency bands.

1 cl, 1 dwg