Reflective waveguide variable power divider/combiner
First Claim
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1. An electromagnetic power divider/combiner comprising:
- a waveguide having a major axis and a circular cross section orthogonal to said major axis;
a first input port and a first output port, said first input port and said first output port both disposed near a first end of said waveguide, said first input port being operative to couple a vertically polarized electromagnetic wave to said waveguide and said first output port being operative to couple said vertically polarized electromagnetic wave from said waveguide;
a second input port and a second output port said second input port and said second input port both disposed near said first end of said waveguide, said second input port being operative to couple a horizontally polarized electromagnetic wave to said waveguide and said second output port being operative to couple said horizontally polarized electromagnetic wave from said waveguide;
a slow-wave structure comprising a series of fins oriented transversely of said major axis of said waveguide and being spaced apart along said major axis of said waveguide; and
a short circuit disposed at a second end of said waveguide opposite said first end of said waveguide for reflecting said vertically polarized electromagnetic wave and said horizontally polarized electromagnetic wave.
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Abstract
A reflective waveguide variable power divider/combiner comprises an orthomode tee section, which includes a section of cylindrical waveguide and a rotatable reflective phase shifter section. The rotatable reflective phase shifter section is rotatably connected to the orthomode tee section by a cylindrical choke joint. The orthomode tee section includes a single orthomode tee unit. The reflective waveguide variable power divider/combiner terminates at a short circuit that separates a motor from the rotatable reflective phase shifter section. The motor is configured to rotate the rotatable reflective phase shifter section relative to the orthomode tee section.
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Citations
25 Claims
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1. An electromagnetic power divider/combiner comprising:
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a waveguide having a major axis and a circular cross section orthogonal to said major axis;
a first input port and a first output port, said first input port and said first output port both disposed near a first end of said waveguide, said first input port being operative to couple a vertically polarized electromagnetic wave to said waveguide and said first output port being operative to couple said vertically polarized electromagnetic wave from said waveguide;
a second input port and a second output port said second input port and said second input port both disposed near said first end of said waveguide, said second input port being operative to couple a horizontally polarized electromagnetic wave to said waveguide and said second output port being operative to couple said horizontally polarized electromagnetic wave from said waveguide;
a slow-wave structure comprising a series of fins oriented transversely of said major axis of said waveguide and being spaced apart along said major axis of said waveguide; and
a short circuit disposed at a second end of said waveguide opposite said first end of said waveguide for reflecting said vertically polarized electromagnetic wave and said horizontally polarized electromagnetic wave.
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2. A method for splitting an electromagnetic signal, said electromagnetic signal including two components having orthogonal orientations, between said two components, the method comprising the steps of:
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propagating said electromagnetic signal in a first direction through a plurality of fins to shift the phase of at least one of said two components;
reflecting said electromagnetic signal; and
propagating said electromagnetic signal in a second direction opposite to the first direction through said plurality of fins to further shift the phase of said at least one of said two components.
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3. An electromagnetic power divider/combiner comprising:
- a waveguide;
a first input port and a first output port, said first input port and said first output port both disposed near a first end of said waveguide, said first input port being operative to couple an electromagnetic wave at a first orientation to said waveguide and said first output port being operative to couple said electromagnetic wave at said first orientation from said waveguide;
a second input port and a second output port, said second input port and said second output port both disposed near said first end of said waveguide, said second input port being operative to couple an electromagnetic wave at a second orientation to said waveguide and said second output port being operative to couple said electromagnetic wave at said second orientation from said waveguide;
a slow-wave structure located in said waveguide; and
a short circuit disposed at a second end of said waveguide opposite said first end of said waveguide for reflecting said electromagnetic wave of said first and second orientations. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- a waveguide;
Specification