High performance multi-band frequency selective reflector with equal beam coverage

A high performance multi-band antenna reflector for use with first and second different frequency bands to produce a comparable beam cell size for each frequency band, comprising:

• a concave reflector having central and outer concentric zones;
• the central concentric zone having a metallized surface that reflects signals in the first and second frequency bands;
• the outer concentric zone including a frequency selective surface formed of a dielectric core having a metallic pattern on top and bottom sides, the metallic pattern dimensioned to reflect signals in the first frequency band and pass signals in the second frequency band;
• at least a first resistance card overlaying a top side of a junction between the metallized surface of the central concentric zone and the frequency selective surface of the outer concentric zone and at least a second resistance card overlaying a bottom side of the junction between the metallized surface of the central concentric zone and the frequency selective surface of the outer concentric zone;
• the reflector having low sidelobe and cross polarization levels and a carrier-to-interference ratio of better than seventeen decibels.