Low sidelobe reflector antenna with shield
AssigneeAndrew Corporation
InventorsRonald J Brandau, Junaid Syed
Life of this patent
Estimating the term…
Abstract
A front feed reflector antenna with a dish reflector has 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 may be coupled to a distal end of the waveguide and a sub-reflector coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. A subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is 50 degrees or less.
Claims20
A front feed reflector antenna, comprising:
- a dish reflector with a focal point;
- 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 proximate the focal point;
- and
- a generally cylindrical shield coupled to a periphery of the dish reflector;
- wherein a subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is 50 degrees or less.
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;
- coupling a dielectric block to a distal end of the waveguide, a sub-reflector coupled to a distal end of the dielectric block;
- and
- coupling a generally cylindrical shield coupled to the periphery of the dish reflector;
- wherein a subtended angle, along the longitudinal axis, between the focal point and a distal periphery of the shield is 50 degrees or less .
A front feed reflector antenna, comprising:
- a dish reflector with a focal point;
- a generally cylindrical shield coupled to a periphery of the dish reflector;
- wherein a subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is 50 degrees or less.
Dependencies are inferred from the claim text.