ONBOARD MULTIBEAM DOUBLE-REFLECTOR ANTENNA WITH SHIFTED FOCAL AXIS Russian patent published in 2016 - IPC H01Q19/19 

FIELD: antenna.

SUBSTANCE: multibeam double-reflector antenna with shifted focal axis consists of a main mirror-reflector with a parabolic profile, an auxiliary mirror is a convergent mirror with a hyperbolic profile. Convergent mirror is curved towards main reflector. First focus of hyperbolic profile is located on axis of antenna, and second coincides with focus of parabola, which forms reflector, and array of radiators. Array of radiators is set opposite convergent mirror between inner edges of reflector so that all radiators are located in plane perpendicular to axis of axial symmetry of reflector, wherein middle radiator is located in first focus of hyperbola forming convergent mirror.

EFFECT: technical effect consists in expansion sector of generating partial beams of antenna directional pattern with simultaneous increase of resulting antenna efficiency and reducing level of cross-polarisation.

1 cl, 1 dwg