Parabolic reflector and antenna incorporating same

摘要

A parabolic reflector has a series of concentric parabolic sections arranged in series, with successive sections being joined by an annular strip and configured so that the antenna depth is substantially minimised. The inner perimeters of the various sections lie preferably on a plane which is perpendicular to the central axis. Preferably also the focal point or focal ring of the reflector lies fully within a volume enclosed by the reflector. The strips may either each have an angle of inclination to the reflector central axis of between 0 and 3 DEG or they may lie on respective cones running from the respective inner perimeters of the respective sections to which they are joined, to the furthest located focal point or ring. <IMAGE>