摘要:
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.
摘要:
A feed network may include a cylindrical common waveguide terminating in a common port and an orthomode transducer having a first port for coupling a first linearly polarized mode to the cylindrical common waveguide and a second port for coupling a second linearly polarized mode to the cylindrical common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. A filter-polarizer element may be disposed within the cylindrical common waveguide. The filter-polarizer element may be rotatable about an axis of the cylindrical common waveguide. The filter-polarizer element may be configured to cause a predetermined relative phase shift between a first signal and a second signal propagating in the cylindrical common waveguide. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide.
摘要:
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.
摘要:
An ortho-mode transducer may include an annular common waveguide defined by an outside surface of an inner conductor and an inside surface of an outer conductor, the outside surface and the inside surface concentric about a waveguide axis. A first port may couple a first TE11 mode to the annular common waveguide. A second port may couple a second TE11 mode to the annular common waveguide, the second TE11 mode orthogonal to the first TE11 mode. A TEM probe may suppress resonance of a TEM mode within the annular common waveguide.
摘要:
An ortho-mode transducer may include an annular common waveguide defined by an outside surface of an inner conductor and an inside surface of an outer conductor, the outside surface and the inside surface concentric about a waveguide axis. A first port may couple a first TE11 mode to the annular common waveguide. A second port may couple a second TE11 mode to the annular common waveguide, the second TE11 mode orthogonal to the first TE11 mode. A TEM probe may suppress resonance of a TEM mode within the annular common waveguide.
摘要:
There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed conductive fins may extend outward from the outer surface of the inner conductor. First and second dielectric fins may be interlocked with the first and second conductive fins, respectively.
摘要:
A feed network may include a cylindrical common waveguide terminating in a common port and an orthomode transducer having a first port for coupling a first linearly polarized mode to the cylindrical common waveguide and a second port for coupling a second linearly polarized mode to the cylindrical common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. A filter-polarizer element may be disposed within the cylindrical common waveguide. The filter-polarizer element may be rotatable about an axis of the cylindrical common waveguide. The filter-polarizer element may be configured to cause a predetermined relative phase shift between a first signal and a second signal propagating in the cylindrical common waveguide. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide.
摘要:
An ortho-mode transducer may include a cylindrical common waveguide terminating in a common port, a rectangular vertical branch waveguide in-line with the cylindrical common waveguide and terminating in a vertical port, and a rectangular horizontal branch waveguide normal to the common waveguide and terminating in a horizontal port. The vertical branch waveguide may be configured to couple a first linearly polarized mode from the vertical port to the common waveguide. The horizontal branch waveguide may be configured to couple a second linearly polarized mode, orthogonal to the first linearly polarized mode, from the horizontal port to the common waveguide. A portion of the vertical branch waveguide may overlap a portion of the cylindrical common waveguide. A septum may span the vertical branch waveguide proximate to the overlapping portions of the vertical branch waveguide and the common waveguide. A rectangular symmetry cavity may be opposed to the horizontal branch waveguide.
摘要:
There is disclosed a feed network including a circular common waveguide having an axis and terminating in a common port and a first port for coupling a first linearly polarized mode to the circular common waveguide. A phase shifting element may be disposed within the circular waveguide. The phase shifting element may be adapted to cause a predetermined phase shift between a first signal and a second signal propagating in the common waveguide. The phase shifting element may be rotatable about the axis of the common waveguide.
摘要:
An ortho-mode transducer may include a cylindrical common waveguide terminating in a common port, a rectangular vertical branch waveguide in-line with the cylindrical common waveguide and terminating in a vertical port, and a rectangular horizontal branch waveguide normal to the common waveguide and terminating in a horizontal port. The vertical branch waveguide may be configured to couple a first linearly polarized mode from the vertical port to the common waveguide. The horizontal branch waveguide may be configured to couple a second linearly polarized mode, orthogonal to the first linearly polarized mode, from the horizontal port to the common waveguide. A portion of the vertical branch waveguide may overlap a portion of the cylindrical common waveguide. A septum may span the vertical branch waveguide proximate to the overlapping portions of the vertical branch waveguide and the common waveguide. A rectangular symmetry cavity may be opposed to the horizontal branch waveguide.