Dual polarized dual band antenna

(Amended) An antenna comprising:

• (a) a first substrate having a first and a second surface with an opening disposed from said first surface to said second surface, the first substrate further having a plurality of antenna elements, responsive to a signal having a first frequency, disposed adjacent the first surface and a corresponding plurality of parasitic antenna elements disposed adjacent the second surface;
• (b) a second substrate having a first and a second surface with an opening disposed from said first surface to said second surface, the second substrate further having a metallic pattern disposed on the first surface of the second substrate, the metallic pattern providing a dichroic surface transparent to signals having the first frequency;
• (c) a dielectric spacer disposed between said first substrate and said second substrate, and
• (d) a Cassegrainian feed disposed in the opening of the first substrate and the opening of the second substrate, the Cassegrainian feed comprising means for feeding and receiving signals having the first frequency and for feeding and receiving signals having a second different frequency.

An antenna comprising:

• (a) first reflecting means for reflecting electromagnetic signals fed thereto, said first reflecting means having an opening therethrough;
• (b) second reflecting means for reflecting electromagnetic signals fed thereto, said second reflecting means adapted to cooperate with said first reflecting means as a dual reflector antenna system;
• (c) feed circuit means, disposed in the opening of said first reflecting means, for feeding and receiving electromagnetic signals having a first frequency to and from the second reflecting means and for feeding and receiving electromagnetic signals having a second different frequency;
• and
• (d) emanating means, disposed adjacent the first reflecting means, for feeding and receiving electromagnetic signals having the second different frequency, wherein the emanating means comprises a plurality of antenna elements comprising:
• a dielectric layer having a first and second surface;
• a microstrip patch radiator element disposed adjacent the first surface of the dielectric layer;
• and
• a parasitic radiator element disposed adjacent the second surface of the dielectric layer.