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US 10,312,565 B1Granted
Microwave power divider/combiner devices, microwave power divider/combiner bandpass filters, and methods of thermally cooling a cable run
OwnerDavid B. Asterinventor
Life of this patent
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Abstract
A method of thermally cooling a microwave coaxial cable run includes inserting in the cable run a bandpass filter, the bandpass filter including a power divider having an input RF connector defining a front end and the power divider having an output, the bandpass filter including a power combiner having an input coupled to the output of the power divider and the power combiner having an output RF connector defining a back end, and the bandpass filter having a heat sink mechanically secured between the power divider and the power combiner. Other methods and systems are also provided.
Claims20
A method of thermally cooling a microwave coaxial cable run, the method comprising:
- inserting in the cable run a power divider and combiner device, the power divider and combiner device including a power divider having an input RF connector defining a front end and having a center contact, and the power divider having an output, the power divider and combiner device including a power combiner having an input coupled to the output of the power divider and the power combiner having an output RF connector defining a back end and having a center contact, the power divider and combiner device having a plate between the power divider and the power combiner, the power divider and combiner device having a first center conductor portion, defining a first axis, coupled to the center contact of the input RF connector and extending to the plate, the power divider and combiner device having a second center conductor portion, defining a second axis coincident with the first axis, coupled to the center contact of the output RF connector and extending to the plate, and the plate having a forward facing surface defining a short circuit to the first center conductor portion and having a rearward facing surface defining a short circuit to the second center conductor portion, the power divider further including a plurality of angularly spaced apart satellite conductors, extending parallel to the first axis, supported radially exterior of the first center conductor portion, the power combiner further including a plurality of angularly spaced apart satellite conductors, extending parallel to the second axis, supported radially exterior of the second center conductor portion, the power divider satellite conductors being coupled to respective power combiner satellite conductors interior of the apertures in the plate, the power divider further having an annular electrically conductive ring, with a center axis coincident with the first axis, passing through and coupled to the power divider satellite conductors, and the power combiner further having an annular electrically conductive ring, with a center axis coincident with the second axis, passing through and coupled to the power combiner satellite conductors.
A method of thermally cooling a microwave coaxial cable run, the method comprising:
- inserting in the cable run a bandpass filter, the bandpass filter including a power divider having an input RF connector defining a front end and the power divider having an output, the bandpass filter including a power combiner having an input coupled to the output of the power divider and the power combiner having an output RF connector defining a back end, and the bandpass filter having a heat sink mechanically secured between the power divider and the power combiner;
- wherein the input RF connector has a center contact, wherein the output RF connector has a center contact, and wherein the power divider and combiner device has a first center conductor portion coupled to the center contact of the input RF connector and extending to the heat sink, and wherein the power divider and combiner device has a second center conductor portion coupled to the center contact of the output RF connector and extending to the heat sink, wherein the heat sink is defined by a shorting plate that has a forward facing surface defining a short circuit to the first center conductor portion and has a rearward facing surface defining a short circuit to the second center conductor portion, and wherein the power divider and power combiner are electrically modeled to define a passband filter.
A power divider and combiner device comprising:
- a power divider having an input RF connector defining a front end of the power divider and combiner device, the power divider having an output, the input RF connector having a center contact and an outer conductor;
- a power combiner having an input coupled to the output of the power divider and the power combiner having an output RF connector defining a back end of the power divider and combiner device, the output RF connector being axially aligned with the input RF connector, the output RF connector having a center contact and an outer conductor;
- a heat sink between the power divider and power combiner, the heat sink having a plurality of angularly spaced apertures;
- a power divider center conductor, coupled to the center contact of the input RF connector, defining a first axis, and extending from the input RF connector towards the heat sink, the power divider center conductor having a first portion, proximate the input RF connector, with a first diameter, and having a second portion, proximate the heat sink, with a second diameter larger than the first diameter;
- a power combiner center conductor, coupled to the center contact of the output RF connector, defining a second axis, and extending from the output RF connector towards the heat sink, the power combiner center conductor having a first portion, proximate the output RF connector, with a first diameter, and having a second portion, proximate the heat sink, with a second diameter larger than the first diameter, the heat sink having a forward facing surface defining a short circuit to the second portion of the power combiner center conductor, the heat sink having a rearward facing surface defining a short circuit to the second portion of the power combiner center conductor, and the heat sink defining a plurality of radial conduction straps between the apertures of the heat sink;
- a power divider ground structure coupled to the heat sink and having an inner flange surface and an inner cylindrical surface;
- a power combiner ground structure coupled to the heat sink and having an inner flange surface and inner cylindrical surface defining, with the inner surfaces of the power divider ground structure, a chamber;
- a plurality of angularly spaced apart power divider satellite conductors extending parallel to the first axis, radially spaced from the power divider center conductor and supported by the power divider ground structure;
- an annular conductive ring having an axis coincident with the first axis and passing through the power divider satellite conductors;
- a plurality of angularly spaced apart power combiner satellite conductors extending parallel to the second axis, radially spaced from the power combiner center conductor and supported by the power combiner ground structure;
- an annular conductive ring having an axis coincident with the second axis and passing through the power combiner satellite conductors;
- and
- a plurality of connection bullets, the power divider satellite conductors being coupled to the power combiner satellite conductors with the connection bullets, the connection bullets being located interior of the apertures in the heat sink.
10 more elements
Dependencies are inferred from the claim text.