Parabolic antenna

An antenna, comprising a number of parabolic cylinder surfaces as reflectors, which are mounted confocally with a common plane of symmetry and a radiator that can emit a substantially plane wave, whose plane is substantially perpendicular to the plane of symmetry of the reflectors next to the radiator in the path of rays, wherein the antenna comprises more than two substantially parabolic cylinder surfaces, each pair of which has in common one line-focus and one plane of symmetry, the line-foci intersecting or crossing each other.