CN220106424U - Spiral traveling wave tube energy transmission structure - Google Patents
Spiral traveling wave tube energy transmission structure Download PDFInfo
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- CN220106424U CN220106424U CN202320671124.7U CN202320671124U CN220106424U CN 220106424 U CN220106424 U CN 220106424U CN 202320671124 U CN202320671124 U CN 202320671124U CN 220106424 U CN220106424 U CN 220106424U
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- inner conductor
- energy transmission
- wave tube
- waveguide assembly
- traveling wave
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 239000004020 conductor Substances 0.000 claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Abstract
The utility model belongs to the technical field of traveling wave tube manufacturing, and particularly provides an energy transmission structure of a spiral traveling wave tube, which comprises a waveguide assembly and a coaxial energy transmission window, wherein the waveguide assembly is provided with a waveguide cavity, and a spiral line is arranged in the waveguide cavity; one end of the waveguide assembly is provided with a mounting hole, the coaxial energy transmission window is connected with the waveguide assembly through the mounting hole, and the coaxial energy transmission window is vertically arranged with the waveguide assembly; the coaxial energy transmission window comprises an inner conductor and an outer conductor which are nested, wherein the inner conductor is perpendicular to the outer conductor, an annular gap is formed between the inner conductor and the outer conductor, and the inner conductor is provided with at least one impedance matcher along the axial direction. According to the utility model, at least one section of impedance matcher is arranged at the inner conductor structure, and good matching of the whole frequency band can be realized through adjustment of the impedance by the impedance matcher.
Description
Technical Field
The utility model belongs to the technical field of traveling wave tubes, and particularly provides an energy transmission structure of a spiral traveling wave tube.
Background
The helix traveling wave tube is a microwave amplifier which converts microwave energy into electron beam energy by utilizing the interaction of electron beams and electromagnetic fields in the helix, thereby realizing the amplification of microwave signals. When the microwave signal is in operation, the microwave signal enters the spiral line through the input end and interacts with the electron beam, so that the electron beam generates energy transfer when moving in the spiral line, and the microwave signal is amplified. The amplified signal is output through an output terminal.
The inventor knows that the current traveling wave tube cold measurement with the waveguide energy transmission structure has the problem of difficult impedance matching debugging. When standing wave debugging is carried out, a plurality of energy transmission windows and waveguide components are required to be replaced, and platinum bands are required to be adjusted.
The waveguide energy transmission structure mainly comprises a box-type window and a waveguide conversion part, and the impedance matching of the spiral line and the waveguide structure is mainly realized by adjusting the inner diameter ratio of the inner conductor to the outer conductor. However, this method can only adjust the inner diameter ratio of the inner conductor to the outer conductor, and the impedance matching adjustment is inconvenient.
Disclosure of Invention
The utility model aims to provide an energy transmission structure of a spiral traveling wave tube, which at least solves one of the technical problems.
In order to solve the above problems in the prior art, one or more embodiments of the present utility model provide a helical line traveling wave tube energy transmission structure, including a waveguide assembly and a coaxial energy transmission window, where the waveguide assembly has a waveguide cavity, and a helical line is disposed in the waveguide cavity; one end of the waveguide assembly is provided with a mounting hole, the coaxial energy transmission window is connected with the waveguide assembly through the mounting hole, and the coaxial energy transmission window is vertically arranged with the waveguide assembly; the coaxial energy transmission window comprises an inner conductor and an outer conductor which are nested, wherein the inner conductor is perpendicular to the outer conductor, an annular gap is formed between the inner conductor and the outer conductor, and the inner conductor is provided with at least one impedance matcher along the axial direction.
Further, the inner conductor comprises a cylindrical section and a conical section which are coaxial, the impedance matcher is arranged on the cylindrical section, and the conical section is positioned at one end, close to the waveguide assembly, of the inner conductor.
The number of the impedance matchers at the inner conductor is a plurality.
Further, the impedance matcher is coaxially arranged with the inner conductor.
Further, the impedance matcher and the cylindrical section are integrally formed, and the impedance matcher and the cylindrical section are integrally formed.
The beneficial effects of one or more of the technical schemes are as follows:
according to the scheme, an impedance matching principle is adopted, one section or a plurality of sections of impedance matchers are directly arranged in the middle of an inner conductor, the impedance at the coaxial energy transmission window is conveniently changed through the structural arrangement of the impedance matchers, and then the impedance can be adjusted through the section or the sections, so that the impedance matching of the whole frequency band can be realized.
Drawings
Some embodiments of the utility model are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic cross-sectional view of an overall structure in an embodiment of the utility model;
fig. 2 is a schematic cross-sectional view of another embodiment of the present utility model.
1. An outer conductor; 2. an inner conductor; 201. a cylindrical section; 202. a conical section; 2011. an impedance matcher; 3. a spiral line; 4. a waveguide assembly.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present utility model, which are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "center," "upper," "lower," "top," "bottom," "vertical," "horizontal," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1-2, an exemplary embodiment of the present utility model provides an energy transmission structure of a spiral line 3 traveling wave tube, which includes a waveguide assembly 4 and a coaxial energy transmission window, wherein the waveguide assembly 4 has a waveguide cavity, and the spiral line 3 is disposed in the waveguide cavity; one end of the waveguide assembly 4 is provided with a mounting hole, the coaxial energy transmission window is connected with the waveguide assembly 4 through the mounting hole, and the coaxial energy transmission window is vertically arranged with the waveguide assembly 4; the coaxial energy transmission window comprises an inner conductor 2 and an outer conductor 1 which are nested, wherein the inner conductor 2 is perpendicular to the outer conductor 1, an annular gap is formed between the inner conductor 2 and the outer conductor 1, and the inner conductor 2 is provided with at least one impedance matcher 2011 along the axial direction.
The energy transmission structure of the helical line 3 traveling wave tube has the advantages that impedance matching of full frequency bands is achieved through the impedance matcher 2011 in the coaxial energy transmission window inner conductor 2, and the working efficiency and stability of the helical line 3 traveling wave tube are improved. Meanwhile, due to the arrangement of the impedance matcher 2011, reflection and loss can be reduced, and energy transmission efficiency is improved. In addition, the annular gap between the inner conductor 2 and the outer conductor 1 of the coaxial energy transmission window can reduce external interference. In practical application, the number and positions of the impedance matchers 2011 can be set to be different according to the needs, so as to achieve the optimal impedance matching effect. Meanwhile, the dimensions and materials of the inner conductor 2 and the outer conductor 1 of the coaxial energy transmission window can be designed according to specific working frequency and power requirements so as to meet different working conditions.
Specifically, the inner conductor 2 includes a cylindrical section 201 and a tapered section 202 that are coaxial, the impedance matcher 2011 is disposed on the cylindrical section 201, and the tapered section 202 is located at an end of the inner conductor 2 near the waveguide assembly 4.
Specifically, the outer conductor 1 includes a cylindrical section 201 and a tapered section 202 that are coaxial, the tapered section 202 is located at an end of the outer conductor 1 near the waveguide assembly 4, and the cylindrical sections 201 of the inner conductor 2 and the outer conductor 1 are nested with each other to form an annular gap.
Specifically, the dimensions and materials of the inner conductor 2 and the outer conductor 1 may be optimally designed according to specific working conditions and requirements, so as to achieve optimal impedance matching and energy transmission efficiency.
In this embodiment, the number of impedance matchers 2011 may be set as required, for example, as shown in fig. 1, where a single impedance matcher 2011 is used at the inner conductor 2, specifically, the number of impedance matchers 2011 at the inner conductor 2 is plural. As shown in fig. 2, a schematic diagram is given in which two impedance matchers 2011 are provided at the inner conductor 2.
In this embodiment, the impedance matcher 2011 is disposed coaxially with the inner conductor 2.
In this embodiment, the impedance matcher 2011 is integrally formed with the cylindrical section 201, and the impedance matcher 2011 is integrally formed with the cylindrical section 201.
Thus far, the technical solution of the present utility model has been described in connection with the foregoing preferred embodiments, but it will be readily understood by those skilled in the art that the scope of the present utility model is not limited to the above-described preferred embodiments. The technical solutions in the above preferred embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present utility model, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present utility model will fall within the protection scope of the present utility model.
Claims (5)
1. The utility model provides a helix travelling wave tube energy transmission structure which characterized in that includes:
the waveguide assembly is provided with a waveguide cavity, and a spiral line is arranged in the waveguide cavity;
the coaxial energy transmission window is arranged at one end of the waveguide assembly and is connected with the waveguide assembly through the mounting hole, and the coaxial energy transmission window is arranged vertically to the waveguide assembly;
the coaxial energy transmission window comprises an inner conductor and an outer conductor which are nested, wherein the inner conductor is perpendicular to the outer conductor, an annular gap is formed between the inner conductor and the outer conductor, and the inner conductor is provided with at least one impedance matcher along the axial direction.
2. The helix traveling wave tube power transfer structure of claim 1 wherein the inner conductor comprises a coaxial cylindrical section and a tapered section, the impedance matcher being disposed in the cylindrical section, the tapered section being at an end of the inner conductor proximate the waveguide assembly.
3. The power transmission structure of the helical traveling wave tube according to claim 1, wherein the number of the impedance matchers at the inner conductor is plural.
4. The helix traveling wave tube energy transfer structure of claim 1, wherein the impedance matcher is coaxially disposed with the inner conductor.
5. The helix traveling wave tube energy transfer structure of claim 2, wherein the impedance matcher is integrally formed with the cylindrical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671124.7U CN220106424U (en) | 2023-03-28 | 2023-03-28 | Spiral traveling wave tube energy transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320671124.7U CN220106424U (en) | 2023-03-28 | 2023-03-28 | Spiral traveling wave tube energy transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106424U true CN220106424U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320671124.7U Active CN220106424U (en) | 2023-03-28 | 2023-03-28 | Spiral traveling wave tube energy transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106424U (en) |
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2023
- 2023-03-28 CN CN202320671124.7U patent/CN220106424U/en active Active
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