MULTI-BEAM RANGE TWO-MIRROR ANTENNA WITH IRRADIATED RADIATION Russian patent published in 2018 - IPC H01Q19/00 

FIELD: radio engineering.

SUBSTANCE: invention is intended for use in the composition of radio engineering systems for television, radio broadcasting and radio communication via artificial satellites while simultaneously receiving information from several satellites operating simultaneously in several frequency bands. Multi-beam, two-mirror antenna with irradiated radiation consists of a system of irradiators located on an arc of a circle, a basic reflector mirror having in a plane orthogonal to the arc plane of the circle form of a parabola, and an auxiliary mirror-counter-reflector, symmetric with respect to the focal axis, in the form of a coaxial parabola of an ellipse concave in the direction of the reflector, sections of which in the plane of the arc of the irradiators are circles concentric with the arc of the irradiators and having in comparison with it larger and smaller radii, respectively, arc of the circumferences of the irradiators passes through the focus of the ellipse, which is close to the reflector. Additionally, one or more additional irradiators are mounted on the arc of irradiators passing through the focus of the ellipse remote from the reflector. According to the invention, the reflector and counter reflector sections in a plane orthogonal to the plane of the irradiation location arc are asymmetric with respect to the focal axis, are arranged with respect to it on opposite sides, and irradiators, including additional ones, in the foci of the ellipse are inclined with respect to this focal axis.

EFFECT: increasing the efficiency of the antenna with a decrease in the shading of its opening and the reaction of the mirror to the irradiators while maintaining the fan diagram and simultaneously receiving two or more frequency bands.

1 cl, 2 dwg