Integrated waveguide cavity antenna and reflector dish
AssigneeDedi David Haziza
InventorDedi David Haziza
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Abstract
A feed assembly for a parabolic dish reflector is described. The feed assembly includes a waveguide cavity locatable at the focal point, or any other desired off-boresight location corresponding point, of the parabolic dish, at least one first radiating element optimized for operation at a first frequency band and provided on a top surface of the waveguide cavity, and a plurality of second radiating elements each optimized for operation at a second band of frequencies and provided on the top surface of the waveguide cavity.
Claims26
An antenna comprising:
- a reflector dish defining a focal point;
- and
- a feed assembly at the focal point, the feed assembly comprising a first parallel-plate waveguide cavity, wherein a top plate of the first parallel-plate waveguide cavity has at least one opening and a radiating element disposed about the opening, the feed assembly further comprising a second parallel-plate waveguide cavity, wherein a top plate of the second parallel-plate waveguide cavity has a plurality of openings and a plurality of second radiating elements each disposed about one of the openings, wherein the phase center of the radiating elements coincides with the focal point.
An antenna comprising:
- a reflector dish;
- a first array of radiating elements configured to operate in a first frequency band, wherein the first array has a first phase center point;
- a second array of radiating elements configured to operate in a second frequency band, wherein the second array has a second phase center point coinciding with the first phase center point;
- and,
- wherein the phase center points of the first and second arrays are located at a focal point of the reflector dish or any other desired point aimed to receive a certain signal from a certain satellite angular location other than boresight reception;
- and,
- wherein the first array comprises one or more conical sections each coupled about an opening in a top plate of a first parallel plate cavity, and the second array comprises one or more conical sections each coupled about an opening in a top plate of a second parallel plate cavity, wherein the first parallel plate cavity and the second parallel plate cavity are parallel to each other.
An antenna comprising:
- a reflector dish defining a focal point;
- and
- a feed assembly at the focal point, the feed assembly comprising:
- a first parallel-plate waveguide cavity having a top surface with at least one opening thereon, and a first-size radiating element provided about the opening;
- a second parallel-plate waveguide cavity having a top surface with at least one opening thereon, and a second-size radiating element provided about the opening.
A feed assembly for a parabolic dish comprising:
- a parallel-plate waveguide locatable about the focal point of the parabolic dish, a top plate of the parallel-plate waveguide having an aperture thereon;
- a radiating element optimized for operation at a first frequency band and provided on the top plate about the aperture and structure to couple wave energy directly from the parallel-plate waveguide via the opening, the radiating element configured to have a focal point coinciding with the focal point of the parabolic dish;
- and,
- further comprising at least one additional radiating element provided on the top plate about another aperture formed on the top plate of the parallel-plate waveguide.
Dependencies are inferred from the claim text.