Multibeam antenna apparatus

Abstract

A multibeam antenna apparatus is disclosed. The multibeam antenna apparatus includes a main reflector (1), a sub-reflector (2), a focused beam feeder (3), a primary radiator array (5) having a plurality of primary radiators (5a), and a lens array (10) having a plurality of wavefront transformation lenses (10a) corresponding to the plurality of primary radiators (5a), respectively. The lens array (10) can be placed in the vicinity of a front end of the primary radiator array (5). As an alternative, the lens array (10) is placed in an electric wave propagation range of the focused beam feeder (3) where multiple beams which constitute a multibeam are spatially isolated from one another in terms of electric power. Thus the multibeam antenna apparatus can prevent an error from occurring in the orientation of each beam.

Dependencies are inferred from the claim text.