High frequency power combiner/divider
First Claim
Patent Images
1. A waveguide power combiner/divider for operation at a selected wavelength, comprising:
- a plurality of hollow waveguides having a hollow core configured to support at least one radiation mode therein, the waveguides having first and second ends with the second ends in communication with one another to permit communication of radiation modes therebetween;
a plurality of transmission line waveguides having a center conductor transmission line disposed therein, each of the transmission line waveguides having an electromagnetic end launcher operably connected to respective first ends of the hollow waveguides, each electromagnetic end launcher having an elongated center conductor end portion that extends into the hollow core of the hollow waveguide; and
a plurality of ground posts each disposed at a respective end launcher in electrical communication with the center conductor and a wall of the hollow waveguide, respectively, to ground the end launcher to the hollow waveguide wall.
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Abstract
Radio frequency (RF) power amplifiers are provided which may include high power, wideband, microwave or millimeter-wave solid state power amplifiers based on waveguide power combiner/dividers.
134 Citations
17 Claims
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1. A waveguide power combiner/divider for operation at a selected wavelength, comprising:
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a plurality of hollow waveguides having a hollow core configured to support at least one radiation mode therein, the waveguides having first and second ends with the second ends in communication with one another to permit communication of radiation modes therebetween; a plurality of transmission line waveguides having a center conductor transmission line disposed therein, each of the transmission line waveguides having an electromagnetic end launcher operably connected to respective first ends of the hollow waveguides, each electromagnetic end launcher having an elongated center conductor end portion that extends into the hollow core of the hollow waveguide; and a plurality of ground posts each disposed at a respective end launcher in electrical communication with the center conductor and a wall of the hollow waveguide, respectively, to ground the end launcher to the hollow waveguide wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A solid state power amplifier, comprising:
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a waveguide power combiner/divider having a plurality of waveguide input ports; a plurality of monolithic microwave integrated circuit chips each in electrical communication with a respective input port of the waveguide power combiner/divider; and a plurality of port isolation circuits disposed between the monolithic microwave integrated circuit chips and the waveguide power combiner/divider input ports to provide isolation among input ports of the waveguide power combiner/divider. - View Dependent Claims (11, 12)
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13. A method of forming a waveguide combiner/divider by a sequential build process, comprising:
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depositing a plurality of layers, wherein the layers comprise one or more of a conductive material, a sacrificial photoresist material, and a non-conductive material, thereby forming a structure, comprising; a plurality of hollow waveguides having a hollow core configured to support at least one radiation mode therein, the waveguides having first and second ends with the second ends in communication with one another to permit communication of radiation modes therebetween; a plurality of transmission line waveguides having a center conductor transmission line disposed therein, each of the transmission line waveguides having an electromagnetic end launcher operably connected to respective first ends of the hollow waveguides, each electromagnetic end launcher having an elongated center conductor end portion that extends into the hollow core of the hollow waveguide; and a plurality of ground posts each disposed at a respective end launcher in electrical communication with the center conductor and a wall of the hollow waveguide, respectively, to ground the end launcher to the hollow waveguide wall; and removing the sacrificial photoresist. - View Dependent Claims (14, 15, 16, 17)
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Specification