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US 12,671,159 B1Granted
Multiband piston polarizer waveguide assembly including coaxially configured inner and outer waveguide cavities
AssigneeLockheed Martin Corporation
InventorJason Stewart Wrigley
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Abstract
Provided herein are various enhancements for radio frequency feed structures for waveguide-fed antenna systems. A waveguide structure includes an outer waveguide cavity comprising radial ports and an outer aperture, and disposed coaxially about a piston polarizer element housing an inner waveguide cavity. The piston polarizer element comprises longitudinal ridges. The inner waveguide cavity comprises an axial port and an inner aperture disposed coaxially with the outer aperture.
Claims20
A waveguide structure, comprising:
- an outer waveguide cavity comprising radial ports and an outer aperture, and disposed coaxially about a piston polarizer element housing an inner waveguide cavity;
- the piston polarizer element comprising longitudinal ridges;
- and
- the inner waveguide cavity comprising an axial port and an inner aperture disposed coaxially with the outer aperture.
1 more element
An assembly, comprising:
- a polarizer portion comprising:
- an outer waveguide cavity comprising radial ports and an outer aperture, and disposed coaxially about a piston polarizer element housing an inner waveguide cavity;
- the piston polarizer element comprising longitudinal ridges;
- and
- the inner waveguide cavity comprising an axial port and an inner aperture disposed coaxially with the outer aperture;
- and
- a magic tee portion comprising:
- a difference port, a sum port, and colinear ports;
- and
- a magic tee waveguide cavity housing an impedance matching element;
- and
- recombination arms coupling the collinear ports of the magic tee portion to the radial ports of the polarizer portion.
9 more elements
A method, comprising:
- forming a polarizer portion comprising:
- an outer waveguide cavity comprising radial ports and an outer aperture, and disposed coaxially about a piston polarizer element housing an inner waveguide cavity;
- the piston polarizer element comprising longitudinal ridges;
- and
- the inner waveguide cavity comprising an axial port and an inner aperture disposed coaxially with the outer aperture;
- and
- forming a magic tee portion comprising:
- a difference port, a sum port, and colinear ports;
- and
- a magic tee waveguide cavity housing an impedance matching element;
- and
- forming recombination arms coupling the collinear ports of the magic tee portion to the radial ports of the polarizer portion.
9 more elements
Dependencies are inferred from the claim text.