Feed systems for multi-band parabolic reflector microwave antenna systems
AssigneeCommScope Technologies LLC
InventorsCraig Mitchelson, Ronald J. Brandau, Thomas C. Tulloch, Griogair Whyte
Life of this patent
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Abstract
Microwave antenna systems include a parabolic reflector antenna having a feed bore and a feed assembly. The feed assembly includes a coaxial waveguide structure that extends through the feed bore, a sub-reflector, and a first dielectric block that is positioned between the coaxial waveguide structure and the sub-reflector. The coaxial waveguide structure includes a central waveguide and an outer waveguide that circumferentially surrounds the central waveguide. One of the central waveguide and the outer waveguide extends further from the feed bore towards the sub-reflector than the other of the central waveguide and the outer waveguide.
Claims20
A microwave antenna system, comprising:
- a parabolic reflector antenna having a feed bore;
- a feed assembly that includes a coaxial waveguide structure that extends in a longitudinal direction, the coaxial waveguide structure including a central waveguide and an outer waveguide that circumferentially surrounds the central waveguide;
- and
- a feed assembly interface that includes:
- a central waveguide extension;
- an outer waveguide extension;
- a first rectangular waveguide;
- a second rectangular waveguide, the first and second rectangular waveguides coupled to the outer waveguide extension at respective first and second longitudinal positions along the outer waveguide extension;
- and
- a plurality of shorting elements that extend through respective openings in the outer waveguide extension to contact an outer surface of the central waveguide extension, the shorting elements disposed between the first and second longitudinal positions;
- and
- at least one biasing element that biases the shorting elements against an outer wall of the central waveguide extension.
A microwave antenna system, comprising:
- a parabolic reflector antenna;
- a feed assembly interface that extends in a longitudinal direction, the feed assembly interface including:
- a central waveguide structure;
- an outer waveguide structure that circumferentially surrounds the central waveguide structure;
- first and second waveguides that are coupled to the outer waveguide structure at respective first and second longitudinal positions along the outer waveguide structure;
- and
- a plurality of pins that extend through respective openings in the outer waveguide structure to contact an outer surface of the central waveguide structure, the pins disposed between the first and second longitudinal positions;
- and
- at least one biasing element that biases the pins against an outer wall of the central waveguide structure.
Dependencies are inferred from the claim text.