High efficiency broadband coaxial power combiner/splitter with radial slotline cards
DCFirst Claim
1. In microwave power combiner comprising:
- a conical coaxial first section;
a conical coaxial second section;
a center cylindrical coaxial section coupled between said first and second conical coaxial sections;
a plurality of tapered slotline cards disposed in said center cylindrical coaxial section between an inner and outer conductor thereof and electromagnetically coupled to said first and second conical coaxial sections, each slotline card having a plurality of slotline transmission lines lying on a radial plane defined through said center cylindrical coaxial section;
a corresponding plurality of devices disposed on each of said plurality of tapered slotline cards, one of said devices coupled to each of said slotline transmission lines, wherein power coupled to a first one of said first and second conical sections is efficiently distributed among said plurality of devices and then efficiently recombined in a second one first and second conical sections so that a compact array with an increased number of said devices is provided in said combiner.
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Abstract
A high-powered, solid state microwave and millimeter wave, power combiner and divider is provided by using a plurality of radially oriented tapered slotline cards disposed in a center cylindrical coaxial section between its inner and outer conductors. The cylindrical coaxial section in turn is coupled to a conical input coaxial section that couples and distributes the input signal among the plurality of cards, and an output coaxial section that combines the output signal from the plurality of cards to an output coaxial terminal. The device is compact with broadband performance and provides a natural heat sink for a plurality of lower powered devices, which enables the power combiner to use a large number of lower powered devices to meet larger power requirements.
93 Citations
17 Claims
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1. In microwave power combiner comprising:
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a conical coaxial first section; a conical coaxial second section; a center cylindrical coaxial section coupled between said first and second conical coaxial sections; a plurality of tapered slotline cards disposed in said center cylindrical coaxial section between an inner and outer conductor thereof and electromagnetically coupled to said first and second conical coaxial sections, each slotline card having a plurality of slotline transmission lines lying on a radial plane defined through said center cylindrical coaxial section; a corresponding plurality of devices disposed on each of said plurality of tapered slotline cards, one of said devices coupled to each of said slotline transmission lines, wherein power coupled to a first one of said first and second conical sections is efficiently distributed among said plurality of devices and then efficiently recombined in a second one first and second conical sections so that a compact array with an increased number of said devices is provided in said combiner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of efficiently combining high-powered electromagnetic signals comprising:
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providing an input electromagnetic signal to a first flared coaxial section; distributing said electromagnetic signal in said first flared coaxial section to and in a center cylindrical coaxial section, said electromagnetic signal being coupled to and distributed among a plurality of radially oriented tapered slotline structures disposed between an inner conductor of said cylindrical coaxial section and an outer conductor of said cylindrical coaxial section, a subplurality of said plurality of slotline structures lying in each of a plurality of radial planes defined through said center cylindrical coaxial section; operating on said electromagnetic signal in each of said slotline structures within a corresponding device; combining said electromagnetic signal output by said device from each of said slotline structures into a second flared coaxial section, wherein high-powered electromagnetic signals are operated upon by plurality of lower powered devices in a compact assembly to result in a efficient and broadband operation. - View Dependent Claims (15, 16, 17)
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Specification