CN110931332B - Vacuum microwave oscillation source - Google Patents
Vacuum microwave oscillation source Download PDFInfo
- Publication number
- CN110931332B CN110931332B CN201911259027.1A CN201911259027A CN110931332B CN 110931332 B CN110931332 B CN 110931332B CN 201911259027 A CN201911259027 A CN 201911259027A CN 110931332 B CN110931332 B CN 110931332B
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- cathode
- grid
- oscillation source
- microwave oscillation
- shell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/04—Cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/18—Resonators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
Abstract
The invention discloses a vacuum microwave oscillation source, comprising: the device comprises a shell, a heater, a cathode, a grid and a reflecting electrode, wherein the heater, the cathode, the grid and the reflecting electrode are arranged in the shell; the cathode and the reflecting electrode are oppositely arranged, the grid mesh is arranged between the cathode and the reflecting electrode, and a resonant cavity is formed between the reflecting electrode and the grid mesh; the heater is arranged beside the cathode and provides a heat source for the cathode, the shell is also provided with a dielectric window, and the outer part of the shell is also provided with an output window matched with the dielectric window; the interior of the housing is in a vacuum state. The vacuum microwave oscillation source solves the problems that the microwave oscillation source in the prior art is large in size and the frequency cannot be adjusted.
Description
Technical Field
The invention relates to the technical field of vacuum devices, in particular to a vacuum microwave oscillation source.
Background
In the microwave field, microwave oscillation sources and amplifying devices are the most widely used microwave devices. The microwave oscillation source comprises a vacuum triode, a reflection klystron, a solid-state device and the like, and is widely applied to the fields of radar, electronic countermeasure, communication and the like.
The microwave oscillation source in the prior art has large volume and the frequency can not be adjusted.
Therefore, it is an urgent need to solve the above problems by providing a vacuum microwave oscillation source that can effectively overcome the above technical problems during use.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to overcome the problems of the prior art that the microwave oscillation source has a large volume and the frequency cannot be adjusted, thereby providing a vacuum microwave oscillation source which can effectively overcome the above technical problems during the use.
In order to achieve the above object, the present invention provides a vacuum microwave oscillation source comprising: the device comprises a shell, and a heater, a cathode, a grid and a reflecting electrode which are arranged in the shell; the cathode and the reflector are oppositely arranged, the grid mesh is arranged between the cathode and the reflector, and a resonant cavity is formed between the reflector and the grid mesh; the heater is arranged beside the cathode and provides a heat source for the cathode, the shell is also provided with a dielectric window communicated with the resonant cavity, and the outer part of the shell is also provided with an output window matched with the dielectric window; the interior of the housing is in a vacuum state.
Preferably, the cathode adopts an oxide cathode or a barium tungsten cathode.
Preferably, the middle part of the grid mesh is of a hollow structure.
Preferably, the material of the grid mesh is tungsten or molybdenum.
Preferably, a first direct current power supply is electrically connected between the cathode and the grid;
a second direct current power supply is electrically connected between the grid and the reflecting electrode;
and the heater is electrically connected with a third direct current power supply.
Preferably, the grid is connected with the shell and is grounded.
Preferably, the heater is a filament.
Preferably, the material of the dielectric window is ceramic or glass.
According to the technical scheme, the vacuum microwave oscillation source provided by the invention has the beneficial effects that: the advantages of the triode and the reflection klystron are combined, and the microwave oscillator has the characteristics of compact structure, small volume, stable and reliable output and adjustable frequency in a certain range.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a vacuum microwave oscillating source provided in a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the vacuum microwave oscillating source wiring provided in a preferred embodiment of the present invention; and
fig. 3 is a schematic structural view of a grid on a vacuum microwave oscillation source provided in a preferred embodiment of the present invention.
Description of the reference numerals
1 outer case 2 heater
3 cathode 4 grid mesh
5 resonant cavity 6 repeller
7 medium window 8 output window
Ua first DC power supply Uc second DC power supply
Uf third DC power supply
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "inside, outside" and the like included in a term merely represent the orientation of the term in a conventional use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the term.
As shown in fig. 1 to 3, the present invention provides a vacuum microwave oscillation source including: the device comprises a shell 1, and a heater 2, a cathode 3, a grid 4 and a reflecting electrode 6 which are arranged inside the shell 1; the cathode 3 and the reflector 6 are oppositely arranged, the grid 4 is arranged between the cathode 3 and the reflector 6, and a resonant cavity 5 is formed between the reflector 6 and the grid 4; the heater 2 is arranged beside the cathode 3 to provide a heat source for the cathode 3, a dielectric window 7 communicated with the resonant cavity 5 is further arranged on the shell 1, and an output window 8 matched with the dielectric window 7 is further arranged outside the shell 1; the inside of the housing 1 is in a vacuum state.
In a preferred embodiment of the present invention, the cathode 3 is an oxide cathode or a barium tungsten cathode.
In a preferred embodiment of the present invention, the middle of the grid 4 is a hollow structure.
In a preferred embodiment of the invention, the material of the grid 4 is tungsten or molybdenum.
In a preferred embodiment of the present invention, a first direct current power source Ua is electrically connected between the cathode 3 and the grid 4;
a second direct current power supply Uc is electrically connected between the grid 4 and the reflecting electrode 6;
and the heater 2 is electrically connected with a third direct current power supply Uf.
In a preferred embodiment of the present invention, the grid 4 is connected to the housing 1 and grounded.
In a preferred embodiment of the invention, the heater 2 is a filament.
In a preferred embodiment of the present invention, the dielectric window 7 is made of ceramic or glass.
In the above scheme, the working principle of the vacuum microwave oscillation source is as follows: the heater 2 provides a heat source for the cathode to ensure that the cathode works at normal temperature, the cathode adopts an oxide cathode or a barium-tungsten cathode, the grid adopts the shape shown in figure 3, the material is high-temperature-resistant tungsten or molybdenum, the grid can effectively reduce the higher-order mode of the resonant cavity, ensure the easy starting vibration of the resonant cavity and ensure the purity of the output frequency spectrum.
Fig. 2 is a schematic diagram of the wiring of a microwave oscillation source electrode, wherein a direct current power supply is connected between a cathode and a grid, the cathode voltage is low, the grid voltage is high, a direct current power supply is connected between the grid and a reflector, the grid voltage is high, the reflector voltage is low, electrons start from the cathode, are accelerated by the grid, pass through the grid, and perform deceleration motion between the grid and the reflector, after the electron speed is reduced to zero, the reverse grid performs acceleration motion, and are finally intercepted by the grid, and when the electrons move between the grid and the reflector, a microwave high-frequency field is excited to interact with the electrons, so that the energy of the electrons is converted into microwave energy under proper conditions, and the microwave energy is output; adjusting the voltage of the reflector so that the output frequency is adjustable within a certain range; wherein, the first and the second end of the pipe are connected with each other,
the shell 1 is provided with a small hole, and a welding medium (generally ceramic or glass) in the small hole isolates vacuum-atmosphere; microwaves are coupled and output through a small medium hole, and a standard waveguide flange or a standard coaxial flange is generally connected behind the small hole and serves as an output port; this structure is the structure of the dielectric window 7.
The vacuum microwave oscillation source provided by the invention combines the advantages of the triode and the reflection klystron, and has the characteristics of compact structure, small volume, stable and reliable output and adjustable frequency in a certain range.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. A vacuum microwave oscillation source, characterized in that the vacuum microwave oscillation source comprises: the device comprises a shell (1), and a heater (2), a cathode (3), a grid (4) and a reflecting electrode (6) which are arranged in the shell (1); the cathode (3) and the reflector (6) are oppositely arranged, the grid (4) is arranged between the cathode (3) and the reflector (6), and a resonant cavity (5) is formed between the reflector (6) and the grid (4); the heater (2) is arranged beside the cathode (3) and provides a heat source for the cathode (3), the shell (1) is also provided with a dielectric window (7) communicated with the resonant cavity (5), and the outer part of the shell (1) is also provided with an output window (8) matched with the dielectric window (7); the interior of the shell (1) is in a vacuum state;
A first direct current power supply (Ua) is electrically connected between the cathode (3) and the grid (4), the cathode (3) is connected with the negative pole of the first direct current power supply (Ua), and the grid (4) is connected with the positive pole of the first direct current power supply (Ua);
a second direct current power supply (Uc) is electrically connected between the grid (4) and the reflecting electrode (6), the grid (4) is connected with the anode of the second direct current power supply (Uc), and the reflecting electrode (6) is connected with the cathode of the second direct current power supply (Uc);
the heater (2) is electrically connected with a third direct current power supply (Uf), the heater (2) supplies heat to the cathode (3), and the cathode (3) emits electrons to the grid (4) after being heated;
the grid mesh (4) is connected with the shell (1) and is grounded.
2. The vacuum microwave oscillation source of claim 1, wherein the cathode (3) is an oxide cathode or a barium tungsten cathode.
3. The vacuum microwave oscillation source of claim 1, wherein the middle part of the grid (4) is hollow.
4. Vacuum microwave oscillation source as claimed in claim 3, characterized in that the material of the grid (4) is tungsten or molybdenum.
5. Vacuum microwave oscillation source as claimed in claim 1, characterized in that said heater (2) is a filament.
6. The vacuum microwave oscillation source of claim 1, wherein the dielectric window (7) is made of ceramic or glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259027.1A CN110931332B (en) | 2019-12-10 | 2019-12-10 | Vacuum microwave oscillation source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259027.1A CN110931332B (en) | 2019-12-10 | 2019-12-10 | Vacuum microwave oscillation source |
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| Publication Number | Publication Date |
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| CN110931332A CN110931332A (en) | 2020-03-27 |
| CN110931332B true CN110931332B (en) | 2022-06-28 |
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| CN201911259027.1A Active CN110931332B (en) | 2019-12-10 | 2019-12-10 | Vacuum microwave oscillation source |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111640637B (en) * | 2020-06-15 | 2021-05-14 | 电子科技大学 | Multi-beam terahertz coaxial resonant cavity reflection klystron |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3031399A (en) * | 1958-12-08 | 1962-04-24 | Csf | High-frequency utilization apparatus for ionized gas |
| US5142250A (en) * | 1992-01-14 | 1992-08-25 | The United States Of America As Represented By The Secretary Of The Navy | High power microwave generator |
| CN110021510A (en) * | 2019-03-15 | 2019-07-16 | 安徽华东光电技术研究所有限公司 | Coaxial manetron cavity resonator structure and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422146A (en) * | 1944-08-31 | 1947-06-10 | Philco Corp | Reflex harmonic generator |
| FR1383767A (en) * | 1963-07-03 | 1965-01-04 | Thomson Varian | Plasma tube for microwave circuit |
| US6998783B2 (en) * | 2003-03-03 | 2006-02-14 | L-3 Communications Corporation | Inductive output tube having a broadband impedance circuit |
| CN105336560B (en) * | 2014-06-25 | 2017-11-14 | 清华大学 | Reflex klystron and electron emitting device |
-
2019
- 2019-12-10 CN CN201911259027.1A patent/CN110931332B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3031399A (en) * | 1958-12-08 | 1962-04-24 | Csf | High-frequency utilization apparatus for ionized gas |
| US5142250A (en) * | 1992-01-14 | 1992-08-25 | The United States Of America As Represented By The Secretary Of The Navy | High power microwave generator |
| CN110021510A (en) * | 2019-03-15 | 2019-07-16 | 安徽华东光电技术研究所有限公司 | Coaxial manetron cavity resonator structure and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 栅控枪中阴极发射电流密度的调节;邓光晟等;《真空电子技术》;20070625(第03期);全文 * |
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