CN109712856B - Electric vacuum energy transmission window structure - Google Patents
Electric vacuum energy transmission window structure Download PDFInfo
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- CN109712856B CN109712856B CN201811637085.9A CN201811637085A CN109712856B CN 109712856 B CN109712856 B CN 109712856B CN 201811637085 A CN201811637085 A CN 201811637085A CN 109712856 B CN109712856 B CN 109712856B
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- waveguide
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- cylindrical dielectric
- circular waveguide
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Abstract
The invention discloses an electric vacuum energy transmission window structure, which consists of a cylindrical dielectric window sheet, a first circular waveguide, a second circular waveguide, an input waveguide and an output waveguide; the cylindrical dielectric window is internally provided with a vacuum area, the first circular waveguide and the second circular waveguide are respectively sleeved at two ends of the outer side of the cylindrical dielectric window, the first circular waveguide is connected with the input waveguide, the second circular waveguide is connected with the output waveguide, and energy is coupled to the output waveguide end from the input waveguide end through the vacuum area. The invention adopts a novel cylindrical window sheet structure, which not only maintains the vacuum state inside the tube, but also can realize low-loss transmission of energy; meanwhile, the surface area of the cylindrical structure is large, so that the problem of difficult metallization of the box-type window can be effectively solved. The invention conforms to the trend that the electric vacuum device tends to high frequency, and has certain practical value and commercial prospect.
Description
Technical Field
The invention relates to the technical field of vacuum electronic devices, in particular to an electric vacuum energy transmission window structure.
Background
In microwave vacuum devices such as traveling wave tubes, klystrons, gyrotrons and magnetrons, a microwave energy transmission window plays a very important role for inputting and outputting energy of a microwave tube, on one hand, the internal vacuum state of the device is maintained, on the other hand, the low-loss energy transmission between the microwave tube and an external transmission line is realized, and the performance of the microwave energy transmission window directly influences the working performance of the microwave tube, including the working frequency band, gain flatness and the like of the tube. The traditional energy transmission window adopts a box type window structure as shown in figure 1, and the structure consists of rectangular waveguides 1a and 1b, circular waveguides 2a and 2b and a dielectric window piece 3; as shown in fig. 2, after the metallization of the corresponding region of the conventional box window is successful, a circular waveguide and a rectangular waveguide are respectively welded on two sides of the window sheet, and the oblique line portion in fig. 2 is the metallization region of the conventional box window.
However, as the operating frequency and power capacity of vacuum electronic devices increase, the thickness of the window is thinner and thinner in order to reduce the power loss and standing-wave ratio of the energy transmission window; the traditional window sheet adopts a side welding process, so that the effective welding area is smaller and smaller; in addition, the conventional bonding method for the energy transmission window may have a phenomenon of cracking of the metallization layer or insufficient package strength, which results in a low yield of the energy transmission window.
Disclosure of Invention
The invention provides an electric vacuum energy transmission window structure, which adopts a cylindrical dielectric window sheet to isolate air from vacuum in a pipe, increases the size of the window sheet and the area of a metalized area, can solve the problem of difficult metallization of the current box-shaped window, and achieves the aim of easy processing on the premise of not influencing transmission.
The invention is realized by the following technical scheme:
an electric vacuum energy transmission window structure comprises a cylindrical dielectric window sheet, a first circular waveguide, a second circular waveguide, an input waveguide and an output waveguide; the cylindrical dielectric window is internally provided with a vacuum area, the first circular waveguide and the second circular waveguide are respectively sleeved at two ends of the outer side of the cylindrical dielectric window, the first circular waveguide is connected with the input waveguide, the second circular waveguide is connected with the output waveguide, and energy is coupled to the output waveguide end from the input waveguide end through the vacuum area.
Preferably, the metalized area of the cylindrical dielectric window is the middle third area of the outer cylindrical surface of the cylindrical dielectric window.
Preferably, the material of the cylindrical dielectric window piece is alumina ceramic, beryllium oxide ceramic or CVD diamond.
Preferably, the length of the vacuum area in the cylindrical medium window sheet is adjustable.
Preferably, the input waveguide and the output waveguide are formed by connecting two rectangular waveguides with different sizes.
The invention has the following advantages and beneficial effects:
the cylindrical dielectric window is adopted, the metalized area is one third of the area in the middle of the outer cylindrical surface of the window, the area is much larger than that of the traditional box-shaped window metalized area, and the metallization is easier to realize; furthermore, the increased metallization area is more conducive to soldering. The window has the advantages that on the premise of not influencing energy transmission, the structure of the traditional box-shaped window is changed, the size of the window sheet is increased, and the metallization of the window sheet is easier to realize and the window sheet is easier to process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of a conventional box window structure.
Fig. 2 is a schematic view of a conventional box-type window metallization region.
Fig. 3 is a front view of the energy delivery window of the present invention.
Fig. 4 is a side view of the energy delivery window of the present invention.
Fig. 5 is a schematic diagram of an energy delivery window metallization region of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 3 and 4, the present embodiment proposes an electric vacuum energy transmission window structure, which mainly comprises a cylindrical dielectric window 1, a first circular waveguide 2a, a second circular waveguide 2b, an input waveguide and an output waveguide; the cylindrical dielectric louver 1 is shown with a vacuum region 5 formed therein. In this embodiment, the input waveguide is formed by connecting a first rectangular waveguide 3a and a second rectangular waveguide 4a, and the first rectangular waveguide 3a and the second rectangular waveguide 4a have different sizes; the output waveguide is formed by connecting a third rectangular waveguide 3b and a fourth rectangular waveguide 4b, and the sizes of the third rectangular waveguide 3b and the fourth rectangular waveguide 4b are different; the first circular waveguide 2a and the second circular waveguide 2b are respectively sleeved at two ends of the outer cylindrical surface of the cylindrical dielectric window 1, and the first rectangular waveguide 3a is connected with the side surface of the first circular waveguide 2 a; the third rectangular waveguide 3b is connected with the side surface of the second circular waveguide 2 b; one end of the second rectangular waveguide 4a is connected with the first rectangular waveguide 3a, and the other end of the second rectangular waveguide is used as an input end; one end of the fourth rectangular waveguide 4b is connected to the third rectangular waveguide 3b, and the other end is used as an output end, and the energy transmission window structure of the present embodiment couples energy from the input end to the output end through the vacuum region 5.
In this embodiment, the metalized area of the cylindrical dielectric window 1 is a middle third area of the outer cylindrical surface of the window 1, as shown by the oblique line area in fig. 5.
In this embodiment, the cylindrical dielectric louver is made of alumina ceramic, beryllium oxide ceramic or CVD diamond.
In this embodiment, the length of the vacuum region inside the cylindrical dielectric louver is adjustable.
The electric vacuum energy transmission window provided by the embodiment wraps other materials at two ends of the window sheet, and only exposes the middle area of the outer side cylindrical surface for metallization; after the metallization is finished, welding metal in the area so as to sleeve and weld the circular waveguides on two sides; and hermetically welding the outer side surfaces of the circular waveguides and assembling the rectangular waveguides in sequence to finish the integral assembly of the energy transmission window.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. An electric vacuum energy transmission window structure is characterized in that the energy transmission window structure consists of a cylindrical dielectric window sheet (1), a first circular waveguide (2 a), a second circular waveguide (2 b), an input waveguide and an output waveguide; a vacuum region (5) is formed in the cylindrical dielectric window (1), the first circular waveguide (2 a) and the second circular waveguide (2 b) are respectively sleeved at two ends of the outer side of the cylindrical dielectric window (1), the first circular waveguide (2 a) is connected with the input waveguide, the second circular waveguide (2 b) is connected with the output waveguide, and energy is coupled to the output waveguide end from the input waveguide end through the vacuum region (5); the metalized area of the cylindrical dielectric window sheet (1) is one third area of the middle of the outer cylindrical surface of the cylindrical dielectric window sheet (1).
2. The structure of claim 1, wherein the material of the cylindrical dielectric louver (1) is alumina ceramic, beryllia ceramic or CVD diamond.
3. The electrical vacuum energy transmission window structure according to claim 1, wherein the length of the vacuum region (5) inside the cylindrical dielectric louver (1) is adjustable.
4. The electrical vacuum energy delivery window structure as defined in claim 1, wherein the input waveguide and the output waveguide are connected by two rectangular waveguides having different sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637085.9A CN109712856B (en) | 2018-12-29 | 2018-12-29 | Electric vacuum energy transmission window structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637085.9A CN109712856B (en) | 2018-12-29 | 2018-12-29 | Electric vacuum energy transmission window structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109712856A CN109712856A (en) | 2019-05-03 |
| CN109712856B true CN109712856B (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811637085.9A Expired - Fee Related CN109712856B (en) | 2018-12-29 | 2018-12-29 | Electric vacuum energy transmission window structure |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10001936A1 (en) * | 2000-01-19 | 2001-07-26 | Tetra Laval Holdings & Finance | Microwave internal plasma-coating apparatus for bottles, has microwave coupling system at one end, opposite coaxial waveguide including gas supply tube |
| CN103236390B (en) * | 2013-04-16 | 2016-02-24 | 中国电子科技集团公司第十二研究所 | A kind of short millimeter wave travelling wave tube diamond delivery of energy window and manufacture method thereof |
| CN103346057A (en) * | 2013-05-30 | 2013-10-09 | 中国科学院电子学研究所 | Microwave energy transmission window |
| CN107238278B (en) * | 2017-07-11 | 2020-01-31 | 中国科学院电子学研究所 | Detachable box type window for microwave vacuum drying |
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- 2018-12-29 CN CN201811637085.9A patent/CN109712856B/en not_active Expired - Fee Related
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| CN109712856A (en) | 2019-05-03 |
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Granted publication date: 20200421 Termination date: 20211229 |