Polarization separating reflector, especially for microwave transmitter and receiver antennas

An antenna reflector system for a microwave transmitter antenna or for a microwave receiver antenna, comprising a plurality of low-loss dielectric layers arranged symmetrically to form a substrate, a plurality of individual dipoles arranged in a resonance pattern to form a single dipole lattice or array on said substrate which forms a mechanically stiff carrier for said dipoles, all of said dipoles having substantially the same given dipole length (L) and substantially the same resonant frequency, a first spacing (d) between neighboring dipoles in the direction of said dipole length, each dipole having a given dipole width (w), a second spacing (D) between neighboring dipoles in the direction of said dipole width, said dipole length (L) and said first (d) and second (D) spacings being so selected that an optimal broadband antenna characteristic is achieved, said dipoles being arranged in columns which are displaced relative to each other so that dipoles of one column fully overlap said first spacing (d) between the dipoles of another neighboring column and vice versa for forming polarization separators which together achieve said broadband antenna characteristic.