UMBRELLA ANTENNA FOR SPACECRAFT Russian patent published in 2013 - IPC H01Q15/16 

FIELD: radio engineering, communication.

SUBSTANCE: antenna has a radiating system and a reflector which includes: rigid supporting bars arranged radially about a centre hub and pivotally connected to said centre hub; a radio-reflecting surface formed in form of wedges, loop chords connected to the wedges, auxiliary bars located in each sector between neighbouring supporting bars; a mechanism for opening the reflector from a transportation position to an operating position. The auxiliary bars are connected to the rear side of a radio-reflecting meshed fabric, are uniformly located in each sector between neighbouring supporting bars; central auxiliary bars are pivotally connected at one end to the hub and the rest of the auxiliary bars are pivotally connected on the side of the apex of the reflector to the corresponding neighbouring supporting bars at different levels, and in the peripheral zone, each auxiliary bar is identically connected to the loop chord between neighbouring supporting beams and with a tensioning thread located near the loop chord.

EFFECT: easy precision adjustment during manufacture and high reliability of providing stability of the working shape of the radio-reflecting surface in antenna orbital operating conditions.

9 dwg