Opposed port ortho-mode transducer with ridged branch waveguide
First Claim
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1. An ortho-mode transducer comprising:
- a common waveguide terminating in a common port;
a horizontal branch waveguide terminating in a horizontal port, the horizontal branch waveguide configured to couple a first linearly polarized mode from the horizontal port to the common waveguide, the horizontal branch waveguide comprising;
a first ridged waveguide segment terminating in the horizontal port, anda second ridged waveguide segment coupling the first ridged waveguide segment to the common waveguide; and
a vertical branch waveguide terminating in a vertical port opposed to the horizontal port, the vertical branch waveguide configured to couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode.
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Abstract
An ortho-mode transducer may include a common waveguide terminating in a common port. A horizontal branch waveguide may terminate in a horizontal port. The horizontal branch waveguide may couple a first linearly polarized mode from the horizontal port to the common waveguide. The horizontal branch waveguide may comprise one or more ridged waveguide segments. A vertical branch waveguide may terminate in a vertical port opposed to the horizontal port. The vertical branch waveguide may couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode.
251 Citations
19 Claims
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1. An ortho-mode transducer comprising:
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a common waveguide terminating in a common port; a horizontal branch waveguide terminating in a horizontal port, the horizontal branch waveguide configured to couple a first linearly polarized mode from the horizontal port to the common waveguide, the horizontal branch waveguide comprising; a first ridged waveguide segment terminating in the horizontal port, and a second ridged waveguide segment coupling the first ridged waveguide segment to the common waveguide; and a vertical branch waveguide terminating in a vertical port opposed to the horizontal port, the vertical branch waveguide configured to couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A feed network comprising:
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an ortho-mode transducer comprising; a common waveguide terminating in a common port; a horizontal branch waveguide terminating in a horizontal port, the horizontal branch waveguide configured to couple a first linearly polarized mode from the horizontal port to the common waveguide, the horizontal branch waveguide comprising; a first ridged waveguide segment terminating in the horizontal port, and a second ridged waveguide segment coupling the first ridged waveguide segment to the common waveguide; and a vertical branch waveguide terminating in a vertical port opposed to the horizontal port, the vertical branch waveguide configured to couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode; a cylindrical waveguide coupled to the common port of the ortho-mode transducer; and a rotatable polarizer element disposed within the cylindrical waveguide. - View Dependent Claims (8, 9, 10, 11)
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12. An ortho-mode transducer comprising:
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a common waveguide terminating in a common port; a horizontal branch waveguide terminating in a horizontal port, the horizontal branch waveguide configured to couple a first linearly polarized mode from the horizontal port to the common waveguide, the horizontal branch waveguide comprising one or more ridged waveguide segments; and a vertical branch waveguide terminating in a vertical port opposed to the horizontal port, the vertical branch waveguide configured to couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode, the vertical branch waveguide comprising a plurality of vertical waveguide segments, wherein each of the vertical waveguide segments has a cross sectional shape different from each other of the plurality of vertical waveguide segments, the vertical waveguide segment having the largest cross-sectional shape is adjacent to the vertical port aperture, and each one of the successive vertical waveguide segments has cross-sectional shape smaller than, and contained within, the cross-sectional shape of the preceding vertical waveguide segment. - View Dependent Claims (13, 14)
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15. A feed network comprising:
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an ortho-mode transducer comprising; a common waveguide terminating in a common port; a horizontal branch waveguide terminating in a horizontal port, the horizontal branch waveguide configured to couple a first linearly polarized mode from the horizontal port to the common waveguide, the horizontal branch waveguide comprising one or more ridged waveguide segments; and a vertical branch waveguide terminating in a vertical port opposed to the horizontal port, the vertical branch waveguide configured to couple a second linearly polarized mode from the vertical port to the common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode, the vertical branch waveguide comprising a plurality of vertical waveguide segments, wherein each of the vertical waveguide segments has a cross sectional shape different from each other of the plurality of vertical waveguide segments, the vertical waveguide segment having the largest cross-sectional shape is adjacent to the vertical port aperture, and each one of the successive vertical waveguide segments has cross-sectional shape smaller than, and contained within, the cross-sectional shape of the preceding vertical waveguide segment; a cylindrical waveguide coupled to the common port of the ortho-mode transducer; and a rotatable polarizer element disposed within the cylindrical waveguide. - View Dependent Claims (16, 17, 18, 19)
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Specification