Patent ID: 7324057
Filing Date: 2008-01-29
Classification: H01Q

Abstract:
1. An antenna for wireless communications comprising: a reflector of paraboloidal shape along both the longitudinal and latitudinal axes of its diameter, said reflector having an inner dish surface and having a focal point at a distance from the reflector on an axis perpendicular to a center of said inner dish surface, wherein said reflector comprises four identical quadrants; feed of the antenna, the feed being located around the focal point and on an axis perpendicular to said center of said inner dish surface; an open cup-shaped conductive cavity having said feed of the antenna located within its volume, the cavity having a flat bottom and mounted with an opening facing said inner dish surface; and wherein said four identical quadrants are made of thin metal ribs with metal mesh wires stretched and attached to the ribs at discrete points while wires in all four quadrants are directed exactly the same.