CN102945781A - Dual-mode multi-beam electron gun for dual-mode traveling wave tube and control method thereof - Google Patents
Dual-mode multi-beam electron gun for dual-mode traveling wave tube and control method thereof Download PDFInfo
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- CN102945781A CN102945781A CN2012103938683A CN201210393868A CN102945781A CN 102945781 A CN102945781 A CN 102945781A CN 2012103938683 A CN2012103938683 A CN 2012103938683A CN 201210393868 A CN201210393868 A CN 201210393868A CN 102945781 A CN102945781 A CN 102945781A
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Abstract
The invention discloses a dual-mode multi-beam electron gun for a dual-mode traveling wave tube and a control method thereof, wherein the dual-mode multi-beam electron gun comprises a cathode, a shadow grid, an inner grid, an outer grid and an anode which are sequentially arranged; the cathode comprises a cathode molybdenum tube, the cathode molybdenum tube is internally divided into two parts along the axial direction of the cathode molybdenum tube, the two parts are separated by insulating ceramics, a cathode sponge body is arranged in one part, a filament encapsulating insulator is arranged in the other part, and a filament is arranged in the filament encapsulating insulator; the end face of the cathode molybdenum cylinder is provided with a plurality of holes, the inner grid electrode controls electron beams in a part of the holes, and the outer grid electrode controls electron beams in the other part of the holes, so that dual-mode operation is realized. The dual-mode multi-beam electron gun for the dual-mode traveling wave tube and the control method thereof with the special structure can provide two working states of high and low modes, control voltages are consistent, and the same magnetic field can be used for focusing electron beams of the two modes.
Description
Technical field
The present invention relates to the microwave vacuum devices field, especially relate to a kind of double mode Multi-Beam electron Gun and control method thereof for dual mode traveling wave tube.
Background technology
In the microwave vacuum devices field, travelling wave tube is most widely used device.Wherein dual mode traveling wave tube can be operated in two kinds of mode states of height.High workload matrix cathode peak current is large, and pulse output power is high, and work is than little, as the radar use of major function; Low mode of operation peak cathode current is little, and pulse output power is little, and work can be used as the functions such as guidance, interference and uses than large, uses a kind of travelling wave tube to finish two kinds of functions.
Dual mode traveling wave tube requires the average power of two kinds of mode of operations suitable with average cathode current, can use same group of Power supply, the meaning that power supply occasion in short supply such as airborne field are had particular importance.One of difficult point of dual mode traveling wave tube design is the design of bimodulus electron gun.The bimodulus electron gun need to provide high low mode two kinds of operating states, requires control voltage consistent, and namely cut-ff voltage and operating voltage do not change when pattern is changed, anode voltage constant, conversion is convenient, can realize through engineering approaches, and focusing magnetic field can focus on simultaneously to two kinds of patterns of height.Yet, but do not meet the bimodulus electron gun of above-mentioned requirements in the prior art fully, limited the development of technology.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of double mode Multi-Beam electron Gun and control method thereof for dual mode traveling wave tube for problems of the prior art, its objective is to provide high low mode two kinds of operating states, and control voltage is consistent, be that cut-ff voltage and operating voltage do not change when pattern is changed, anode voltage constant, conversion is convenient, can realize through engineering approaches, can use same magnetic field to the Electron Beam Focusing of two kinds of patterns.
Technical scheme of the present invention is that the double mode Multi-Beam electron Gun that this kind is used for dual mode traveling wave tube comprises negative electrode, shadow grid, inner grid, outer grid and the anode that is arranged in order, and inner grid is sleeved on the boss of outer grid; Described negative electrode comprises negative electrode molybdenum cylinder, be divided into two parts in the negative electrode molybdenum cylinder and along the axis direction of negative electrode molybdenum cylinder, separate by insulating ceramics between two parts, the negative electrode cavernous body is installed in the part, filament embedding insulator is installed in another part, and is provided with filament in the filament embedding insulator; The end face of negative electrode molybdenum cylinder is provided with several holes, and inner grid control is the electron beam in a part of hole wherein, the electron beam in the outer grid control remainder hole, realization working in double modes.
The diameter in the hole on the described negative electrode molybdenum cylinder end face is set according to the size of double mode electric current, and the quantity in hole is set according to regulating current ratio.
As a kind of embodiment, hole on the end face of described negative electrode molybdenum cylinder is preferably 19, and the diameter in 19 holes is identical, inner grid is provided with the end face of negative electrode molybdenum cylinder is upper outside and places 12 holes that the hole is corresponding, and the electron beam in peripheral 12 holes of control, outer grid is provided with 19 holes that the hole is corresponding on the end face with negative electrode molybdenum cylinder, and the electron beam in 7 holes, control centre place, and just the mode current ratio is 19:7.
Described shadow grid, inner grid and outer grid are one, and shadow grid, inner grid and outer grid are planar structure.
The current potential of described shadow grid is consistent with negative electrode, and the cut-ff voltage of inner grid and outer grid is all consistent with height work pattern voltage.
The generating positive and negative voltage of described inner grid and outer grid is poor all less than 800V.
A kind of control method of above-mentioned double mode Multi-Beam electron Gun according to the size of double mode electric current, arranges the aperture in several holes on the negative electrode molybdenum cylinder, and the size in aperture can be all consistent; Also can finely tune the wherein aperture in part hole, different with the aperture of other notes, reach the purpose of regulating height mode current ratio; The quantity in hole is set according to regulating current ratio.
As a kind of concrete execution mode, the hole on the end face of described negative electrode molybdenum cylinder is preferably 19, and the diameter in 19 holes is identical, and inner grid is controlled peripheral 12 notes electron beams, outer grid control centre 7 notes electron beams;
1) when inner grid and outer grid add negative stopping potential simultaneously, 19 notes beam suppressions, negative electrode is emission current not;
2) add negative stopping potential when inner grid, when outer grid adds positive operating potential, the work of center 7 notes cathode emission electron beams, peripheral 12 notes beam suppressions are operated in the low mode state;
3) when inner grid and outer grid were increased operating potential simultaneously, 19 notes electron beams were launched simultaneously, and electron gun is operated in the height mode state.
Double mode Multi-Beam electron Gun and control method thereof that this kind with said structure is used for dual mode traveling wave tube have the following advantages:
1. this kind is used 19 notes planar cathodes for the double mode Multi-Beam electron Gun of dual mode traveling wave tube, negative electrode is as a whole, one adds heater, simplified technique, in 19 holes of a molybdenum barrel part processing, use general immersion film-coated cathode technique to make, form 19 notes negative electrodes, launching track, the shape of 19 notes electron beams are consistent, and emission current is consistent.Track, the shape of center 7 notes electron beams do not change during high low mode conversion, and focusing magnetic field does not need to change when high low mode conversion.
2. this kind double mode Multi-Beam electron Gun of being used for dual mode traveling wave tube arranges the negative electrode aperture according to the size of double mode electric current, also can finely tune wherein part aperture, and is different with the aperture of other notes, reaches the purpose of regulating height mode current ratio; Can certainly not use 19 notes electron beams, use other notes number, and control respectively different electron beams, regulate current ratio.
3. this kind is simple for the double mode Multi-Beam electron Gun process structure of dual mode traveling wave tube, engineering is used and is easy to realize, negative electrode, shadow grid, inner grid, outer grid are planar structure, be easy to processing, and negative electrode, shadow grid, inner grid, outer grid are by Design Orientation hole and suitable frock, guarantee mutual position relationship, guarantee assembly precision; Shadow grid, inner grid, outer grid generally adopt high temperature refractory such as molybdenum to make, and intensity is good, and radiating condition is good, and temperature is low, and reliability is high.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of structure shown in Figure 1.
Fig. 3 is the structural representation of negative electrode among the present invention.
Fig. 4 is the left view of structure shown in Figure 3.
Fig. 5 is the structural representation of shadow grid among the present invention.
Fig. 6 is the left view of structure shown in Figure 5.
Fig. 7 is the structural representation of inner grid among the present invention.
Fig. 8 is the left view of structure shown in Figure 7.
Fig. 9 is the structural representation of the present invention China and foreign countries grid.
Figure 10 is the right view of structure shown in Figure 9.
Figure 11 is the structural representation of Anodic of the present invention.
Figure 12 is the left view of structure shown in Figure 11.
In Fig. 1-12,1: negative electrode molybdenum cylinder; 2: the negative electrode cavernous body; 3: filament embedding insulator; 4: insulating ceramics; 5: filament; 6: negative electrode; 7: shadow grid: 8: inner grid; 9: outer grid; 10: anode.
Embodiment
By the combination of structure shown in Fig. 1-12 as can be known, the double mode Multi-Beam electron Gun that this kind is used for dual mode traveling wave tube comprises negative electrode 6, shadow grid 7, inner grid 8, outer grid 9 and the anode 10 that is arranged in order; Negative electrode 6 comprises negative electrode molybdenum cylinder 1, be divided into two parts in the negative electrode molybdenum cylinder 1 and along the axis direction of negative electrode molybdenum cylinder 1, separate by insulating ceramics 4 between two parts, negative electrode cavernous body 2 is installed in the part, filament embedding insulator 3 is installed in another part, and is provided with filament 5 in the filament embedding insulator 3; The end face of negative electrode molybdenum cylinder 1 is provided with several holes, and inner grid 8 control is the electron beam in a part of hole wherein, the electron beam in the outer grid 9 control remainder holes, realization working in double modes.
The diameter in the hole on negative electrode molybdenum cylinder 1 end face is set according to the size of double mode electric current, and the quantity in hole is set according to regulating current ratio.
As a specific embodiment of the present invention, hole on the end face of negative electrode molybdenum cylinder 1 is preferably 19, and the diameter in 19 holes is identical, inner grid 8 is provided with the end face of negative electrode molybdenum cylinder 1 is upper outside and places 12 holes that the hole is corresponding, and the electron beam in peripheral 12 holes of control, outer grid 9 is provided with 19 holes that the hole is corresponding on the end face with negative electrode molybdenum cylinder 1, and the electron beam in 7 holes, control centre place, height mode current ratio is 19:7, use general immersion film-coated cathode technique to make, form 19 notes negative electrodes, the launching track of 19 notes electron beams, shape is consistent, and emission current is consistent.Track, the shape of center 7 notes electron beams do not change during high low mode conversion, and focusing magnetic field does not need to change when high low mode conversion.
Size according to double mode electric current arranges the negative electrode aperture, also can finely tune wherein part aperture, and is different with the aperture of other notes, reaches the purpose of regulating height mode current ratio; Can certainly not use 19 notes electron beams, use other notes number, and control respectively different electron beams, regulate current ratio.
The current potential of shadow grid 7 is consistent with negative electrode 6, and the cut-ff voltage of inner grid 8 and outer grid 9 is all consistent with height work pattern voltage, and the generating positive and negative voltage of inner grid 8 and outer grid 9 is poor all less than 800V.
The control method of the double mode Multi-Beam electron Gun of this kind is specially: according to the size of double mode electric current, the aperture in several holes on the negative electrode molybdenum cylinder 1 is set, the size in aperture can be all consistent; Also can finely tune the wherein aperture in part hole, different with the aperture of other notes, reach the purpose of regulating height mode current ratio; The quantity in hole is set according to regulating current ratio.
Hole on the end face of negative electrode molybdenum cylinder 1 is preferably 19, and the diameter in 19 holes is identical, the peripheral 12 notes electron beams of inner grid 8 control, outer grid 9 control centres 7 notes electron beams;
1) when inner grid 8 and outer grid 9 add negative stopping potential simultaneously, 19 notes beam suppressions, negative electrode 6 is emission current not;
2) add negative stopping potential when inner grid 8, when outer grid 9 adds positive operating potential, the work of center 7 notes cathode emission electron beams, peripheral 12 notes beam suppressions are operated in the low mode state;
3) when inner grid 8 and outer grid 9 were increased operating potential simultaneously, 19 notes electron beams were launched simultaneously, and electron gun is operated in the height mode state.
Claims (8)
1. double mode Multi-Beam electron Gun that is used for dual mode traveling wave tube, it is characterized in that: described double mode Multi-Beam electron Gun comprises negative electrode (6), shadow grid (7), inner grid (8), outer grid (9) and the anode (10) that is arranged in order; Described negative electrode (6) comprises negative electrode molybdenum cylinder (1), be divided into two parts in the negative electrode molybdenum cylinder (1) and along the axis direction of negative electrode molybdenum cylinder (1), separate by insulating ceramics (4) between two parts, negative electrode cavernous body (2) is installed in the part, filament embedding insulator (3) is installed in another part, and is provided with filament (5) in the filament embedding insulator (3); The end face of negative electrode molybdenum cylinder (1) is provided with several holes, and inner grid (8) control is the electron beam in a part of hole wherein, the electron beam in outer grid (9) the control remainder hole, realization working in double modes.
2. a kind of double mode Multi-Beam electron Gun for dual mode traveling wave tube according to claim 1, it is characterized in that: the diameter in the hole on described negative electrode molybdenum cylinder (1) end face is set according to the size of double mode electric current, and the quantity in hole is set according to regulating current ratio.
3. a kind of double mode Multi-Beam electron Gun for dual mode traveling wave tube according to claim 2, it is characterized in that: the hole on the end face of described negative electrode molybdenum cylinder (1) is preferably 19, and the diameter in 19 holes is identical, inner grid (8) is provided with the end face of negative electrode molybdenum cylinder (1) is upper outside and places 12 holes that the hole is corresponding, and the electron beam in peripheral 12 holes of control, outer grid (9) is provided with 19 holes that the hole is corresponding on the end face with negative electrode molybdenum cylinder (1), and the electron beam in 7 holes, control centre place, height mode current ratio is 19:7.
4. the described a kind of double mode Multi-Beam electron Gun for dual mode traveling wave tube of each claim according to claim 1-3, it is characterized in that: described shadow grid (7), inner grid (8) and outer grid (9) are one, and shadow grid (7), inner grid (8) and outer grid (9) are planar structure.
5. a kind of double mode Multi-Beam electron Gun for dual mode traveling wave tube according to claim 4, it is characterized in that: the current potential of described shadow grid (7) is consistent with negative electrode (6), and the cut-ff voltage of inner grid (8) and outer grid (9) is all consistent with height work pattern voltage.
6. a kind of double mode Multi-Beam electron Gun for dual mode traveling wave tube according to claim 5, it is characterized in that: the generating positive and negative voltage of described inner grid (8) and outer grid (9) is poor all less than 800V.
7. the control method of the described double mode Multi-Beam electron Gun of each claim of claim 1-6 is characterized in that: according to the size of double mode electric current, the aperture in upper several holes of negative electrode molybdenum cylinder (1) is set, the size in aperture can be all consistent; Also can finely tune the wherein aperture in part hole, different with the aperture of other notes, reach the purpose of regulating height mode current ratio; The quantity in hole is set according to regulating current ratio.
8. the control method of double mode Multi-Beam electron Gun according to claim 7, it is characterized in that: the hole on the end face of described negative electrode molybdenum cylinder (1) is preferably 19, and the diameter in 19 holes is identical, inner grid (8) is provided with the end face of negative electrode molybdenum cylinder (1) is upper outside and places 12 holes that the hole is corresponding, and the electron beam in peripheral 12 holes of control, outer grid (9) is provided with 19 holes that the hole is corresponding on the end face with negative electrode molybdenum cylinder (1), and the electron beam in 7 holes, control centre place;
1) when inner grid (8) and outer grid (9) add negative stopping potential simultaneously, 19 notes beam suppressions, negative electrode (6) is emission current not;
2) add negative stopping potential when inner grid (8), outer grid (9) is when adding positive operating potential, the work of center 7 notes cathode emission electron beams, and peripheral 12 notes beam suppressions are operated in the low mode state;
3) when inner grid (8) and outer grid (9) when increasing operating potential simultaneously, 19 notes electron beams are launched simultaneously, and electron gun is operated in the height mode state.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103311075A (en) * | 2013-06-21 | 2013-09-18 | 安徽华东光电技术研究所 | Dual-mode traveling wave tube slow wave structure |
| CN109686638A (en) * | 2018-12-20 | 2019-04-26 | 安徽华东光电技术研究所有限公司 | A kind of electron emission source |
| WO2020118938A1 (en) * | 2018-12-13 | 2020-06-18 | 陕西利友百辉科技发展有限公司 | Multi-suspended gate cathode structure, electron gun, electron accelerator, and irradiation device |
| CN111328176A (en) * | 2018-12-13 | 2020-06-23 | 陕西利友百辉科技发展有限公司 | Suspended grid cathode structure, electron gun, electron accelerator and irradiation device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103311075A (en) * | 2013-06-21 | 2013-09-18 | 安徽华东光电技术研究所 | Dual-mode traveling wave tube slow wave structure |
| CN103311075B (en) * | 2013-06-21 | 2016-01-27 | 安徽华东光电技术研究所 | Dual-mode traveling wave tube slow wave structure |
| WO2020118938A1 (en) * | 2018-12-13 | 2020-06-18 | 陕西利友百辉科技发展有限公司 | Multi-suspended gate cathode structure, electron gun, electron accelerator, and irradiation device |
| CN111326378A (en) * | 2018-12-13 | 2020-06-23 | 陕西利友百辉科技发展有限公司 | Multi-floating grid cathode structure, electron gun, electron accelerator and irradiation device |
| CN111328176A (en) * | 2018-12-13 | 2020-06-23 | 陕西利友百辉科技发展有限公司 | Suspended grid cathode structure, electron gun, electron accelerator and irradiation device |
| CN111326378B (en) * | 2018-12-13 | 2021-07-30 | 陕西利友百辉科技发展有限公司 | Multi-floating grid cathode structure, electron gun, electron accelerator and irradiation device |
| CN109686638A (en) * | 2018-12-20 | 2019-04-26 | 安徽华东光电技术研究所有限公司 | A kind of electron emission source |
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Address after: 241000 No.01 Eshan Road, high tech Development Zone, Yijiang District, Wuhu City, Anhui Province Patentee after: ANHUI HUADONG PHOTOELECTRIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 241000 Anhui Province, Wuhu city Yijiang District South high tech Development Zone Technology Park mansion Patentee before: Anhui Huadong Polytechnic Institute |
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