Abstract: An apparatus including a first antenna array including first radiators arranged at a plurality of vertices defining a first shape; and a second antenna array including second radiators arranged at a plurality of vertices defining a second shape, wherein a first subset and a second subset of the first radiators are configured to operate at different polarizations, wherein a first subset and a second subset of the second radiators are configured to operate at different polarizations, and wherein the first shape and the second shape partially overlap, wherein a radiator of the first radiators is within an area defined by the second shape, and one or more other radiators of the first radiators are outside the area defined by the second shape.

Abstract: An antenna system having a cylindrical electromagnetic lens configured to guide at least one electromagnetic signal to an emerging area by means of at least a variation in dielectric permittivity, thereby generating a beam output from the emerging area. The antenna system has a dielectric member configured to receive the beam output from the emerging area and to focus the beam in an elevation plane perpendicular to a planar face of the cylindrical electromagnetic lens. The cylindrical electromagnetic lens is received in a conductive mounting, and the mounting carries the dielectric member.

Abstract: An antenna system having a cylindrical electromagnetic lens configured to guide at least one electromagnetic signal to an emerging area by means of at least a variation in dielectric permittivity, thereby generating a beam output from the emerging area. The antenna system has a dielectric member configured to receive the beam output from the emerging area and to focus the beam in an elevation plane perpendicular to a planar face of the cylindrical electromagnetic lens. The cylindrical electromagnetic lens is received in a conductive mounting, and the mounting carries the dielectric member.