Integrated single-piece antenna feed and components
AssigneeOptisys, Inc.
InventorsMichael C. Hollenbeck, Robert Smith, Clinton Cathey, Janos Opra
Life of this patent
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Abstract
Embodiments of the invention include an integrated single-piece antenna feed and a turnstile circular polarizer suitable for use in a satellite communications system. One embodiment of the integrated single-piece antenna includes a circular waveguide input, a turnstile, a coaxial feed horn, subreflector and subreflector support. Alternative embodiments utilize symmetrically oriented struts with or without a coaxial subreflector support to physically support a subreflector.
Claims24
An integrated single-piece antenna feed having an axis with proximal and distal ends for propagating an electromagnetic wave, comprising:
- four ridged rectangular waveguide arms for propagating the electromagnetic wave from the proximal end and extending toward the distal end;
- a coaxial turnstile waveguide including an outside surface cylindrical conductor and an inner conductor, the inner conductor comprising a cylindrical subreflector support;
- a ridged rectangular waveguide to coaxial turnstile waveguide transition coupled to the four ridged rectangular waveguide arms wherein each of the four ridged rectangular waveguide arms transitions into the coaxial turnstile waveguide;
- a coaxial feed horn coupled to the coaxial turnstile waveguide;
- and
- a subreflector located at the distal end having an outer rim and supported axially by the cylindrical subreflector support.
An integrated single-piece antenna feed having an axis with proximal and distal ends for propagating an electromagnetic wave, comprising:
- a circular waveguide input having a circular opening at the proximal end and extending coaxially toward the distal end;
- a coaxial feed horn coupled to the circular waveguide;
- a subreflector located at the distal end having an outer rim;
- a coaxial post extending axially from the subreflector toward the proximal end and into the circular waveguide input;
- and
- a plurality of symmetrically oriented struts configured for structurally supporting the subreflector, each of the plurality of struts connected between the outer rim of the subreflector and the circular waveguide input.
An integrated single-piece antenna feed having an axis with proximal and distal ends for propagating an electromagnetic wave, comprising:
- a circular waveguide input having a circular opening at the proximal end and extending toward the distal end;
- a feed horn coupled to the circular waveguide;
- a subreflector located at the distal end having an outer rim;
- and
- a plurality of symmetrically oriented struts configured for structurally supporting the subreflector, each of the plurality of struts connected between the outer rim of the subreflector and the circular waveguide input.
An integrated single-piece antenna feed having an axis with proximal and distal ends for propagating an electromagnetic wave, comprising:
- a wrapped-ridged rectangular waveguide for propagating the electromagnetic wave from the proximal end and extending toward the distal end;
- a circular waveguide including an outside surface cylindrical conductor;
- a wrapped-ridged rectangular waveguide to circular waveguide transition coupled to the wrapped-ridged rectangular waveguide;
- a feed horn coupled to the wrapped-ridged rectangular waveguide to circular waveguide transition;
- a subreflector located at the distal end having an upper surface;
- and
- a plurality of struts, wherein each of the plurality of struts is connected to the upper surface of the subreflector and the wrapped-ridged rectangular waveguide.
Dependencies are inferred from the claim text.