Low sidelobe reflector antenna
First Claim
Patent Images
1. A front feed reflector antenna, comprising:
- a dish reflector with a reflector focal length to reflector diameter ratio of less than 0.25;
a wave guide coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis;
a dielectric block coupled to a distal end of the waveguide;
a sub-reflector coupled to a distal end of the dielectric block; and
a generally cylindrical shield coupled to the periphery of the dish reflector;
a diameter of the sub-reflector dimensioned to be 2.5 wavelengths or more of a desired operating frequency.
13 Assignments
0 Petitions
Accused Products
Abstract
A front feed reflector antenna with a dish reflector has a reflector focal length to reflector diameter ratio of less than 0.25. A wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block is coupled to a distal end of the waveguide and a sub-reflector is coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. The sub-reflector diameter is dimensioned to be 2.5 wavelengths or more of a desired operating frequency.
-
Citations
20 Claims
-
1. A front feed reflector antenna, comprising:
-
a dish reflector with a reflector focal length to reflector diameter ratio of less than 0.25; a wave guide coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis; a dielectric block coupled to a distal end of the waveguide; a sub-reflector coupled to a distal end of the dielectric block; and a generally cylindrical shield coupled to the periphery of the dish reflector; a diameter of the sub-reflector dimensioned to be 2.5 wavelengths or more of a desired operating frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method for manufacturing a front feed reflector antenna, comprising the steps of:
-
coupling a wave guide to a proximal end of a dish reflector, the dish reflector dimensioned with a reflector focal length to reflector diameter ratio of less than 0.25; coupling a dielectric block to a distal end of the waveguide, a sub-reflector with a diameter dimensioned to be 2.5 wavelengths or more of a desired operating frequency coupled to a distal end of the dielectric block; and coupling a generally cylindrical shield coupled to the periphery of the dish reflector. - View Dependent Claims (19, 20)
-
Specification