Reflector antenna having low-dielectric support tube for sub-reflectors and feeds

A method for producing an antenna having improved transmission and reception characteristics comprising:

• providing a main reflector;
• disposing an antenna element in front of said main reflector and coaxially aligned with an axial center of said main reflector so as to face said main reflector;
• and
• mounting said antenna element on a support tube having a plurality of openings formed therein so that radio frequency signals may pass more freely through the support tube without being reflected therefrom.

A method for producing an antenna having improved transmission and reception characteristics comprising:

• providing a main reflector;
• disposing a waveguide at an axial center of said main reflector;
• disposing a sub-reflector in front of said main reflector and coaxially aligned with an axial center of said main reflector so as to face said main reflector;
• and
• mounting said sub-reflector on a support tube having a plurality of openings, wherein the apertures are spaced generally uniformly around the support tube, so that radio frequency signals may pass more freely through the support tube without being reflected therefrom.