Traveling wave tube loaded by a material having negative permittivity and positive permeability
AssigneeWisconsin Alumni Research Foundation
InventorsArash Rashidi Tarhani, Nader Behdad
Life of this patent
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Abstract
A slow wave structure of a traveling wave tube is provided. The slow wave structure includes an input port, an output port, a first material, and a second material. The second material is mounted in the first material at periodic intervals in a direction of propagation of a radio frequency signal between the input port and the output port. The second material has a real part of permittivity that is negative and a real part of permeability that is positive at an operational frequency of the radio frequency signal.
Claims20
A slow wave structure of a traveling wave tube comprising:
- a tube;
- an input port at a second end of the tube;
- an output port at a second end of the tube;
- a first material mounted within the tube between the input port and the output port;
- and
- a second material, wherein the second material is mounted in the first material at periodic intervals in a direction of propagation of a radio frequency signal between the input port and the output port, and the second material has a real part of permittivity that is negative and a real part of permeability that is positive at an operational frequency of the radio frequency signal.
A traveling wave tube comprising:
- a slow wave structure comprising
- an input port at a first end of the slow wave structure;
- an output port at a second end of the slow wave structure;
- a first material mounted within the slow wave structure between the input port and the output port;
- and
- a second material, wherein the slow wave structure is configured to receive a radio frequency signal through the input port and to output an amplified radio frequency signal through the output port, wherein the radio frequency signal has an operational frequency;
- and
- an electron beam vacuum tube configured to receive an electron beam and to focus the electron beam for transmission therethrough, wherein the electron beam vacuum tube is mounted to extend lengthwise through a center of the slow wave structure defined in a plane perpendicular to a direction of propagation of the electron beam,
- wherein the second material is mounted in the first material at periodic intervals in a direction of propagation of the radio frequency signal between the input port and the output port, and the second material has a real part of permittivity that is negative and a real part of permeability that is positive at the operational frequency.
Dependencies are inferred from the claim text.