CN104134595A - Sheet beam inductive output tube - Google Patents
Sheet beam inductive output tube Download PDFInfo
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- CN104134595A CN104134595A CN201410409518.0A CN201410409518A CN104134595A CN 104134595 A CN104134595 A CN 104134595A CN 201410409518 A CN201410409518 A CN 201410409518A CN 104134595 A CN104134595 A CN 104134595A
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- ribbon beam
- output tube
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Abstract
Provided is a sheet beam inductive output tube. The sheet beam inductive output tube is composed of three parts, wherein the first part is an input system composed of a grid-control sheet beam electronic gun and an input cavity, fed-in microwave signals are injected into the input cavity through a coaxial input cable, a high-frequency electric field is formed between an aperture plate and a sheet beam cathode, and density modulation of emission electrons of the sheet beam cathode is achieved; the second part is an output cavity composed of a dumbbell-shaped resonant cavity, a multi-clearance extension interaction structure is adopted, and therefore power capacity, efficiency and gains of the output cavity are increased, and the high-frequency microwaves inside a cavity body are output through output waveguide; the third part is a collector for collecting energy of electronic beams finishing the beam and wave interaction. The sheet beam inductive output tube is simple and easy to implement, and has the advantages of being easy to machine, low in processing difficulty and the like; compared with a traditional single-clearance dumbbell-shaped output cavity, the output cavity has the advantages of being high in output power, efficiency and gain, and the like, and can work more stably and reliably.
Description
Technical field
The present invention relates to electric vacuum technology field, relate in particular to a kind of ribbon beam inductive output tube.
Background technology
In the television transmitter family of UHF wave band, except ceramic tube ripe and that use the earliest, the klystron of updating to raise the efficiency, and outside the high reliability all solid-state transmitter being becoming better and approaching perfection day by day, within 1993, there is again in the world employing IOT (Inductive Output Tube, abbreviation inductive output tube) television transmitter, caused the great attention of radio and television industrial quarters, compare with television transmitter in the past, adopt the outstanding features such as the television transmitter of IOT has price and maintenance cost is low, efficiency is high, caused people's extensive attention.
Inductive output tube (IOT), also claim velocity modulation tetrode (klystrode), it gets up the advantages of microwave tetrode and klystron, being a kind of compact low-frequency high-power microwave amplifier part, is a kind of density modulation microwave tube that electrostatic control pipe and klystron are mutually combined and formed.In IOT, input resonator produces high-frequency electric field between grid and negative electrode, controls the electron emission of hot cathode, obtains the electron beam of density modulation.Density modulation electron beam, through being added in after the high pressure acceleration between grid and anode, enters output cavity through after one section of drift space, and induce high frequency voltage on export resonance cavity gap; Density modulation electron beam and output cavity high frequency voltage interact and obtain High frequency amplification, and the high frequency power of amplification is through the output of output transmission line.
Compare with klystron, IOT has that volume is little, lightweight, efficiency advantages of higher, is particularly suitable for low-frequency range application.Compare with microwave three, tetrode, IOT can be operated in higher frequency, larger power, has higher gain.
In recent years, digital TV transmitter, particle accelerator, radar and the application such as communicate by letter have proposed new requirement to IOT, in the urgent need to the IOT of development high-frequency, high-peak power, high efficiency, high-gain and wide band new structure.
Summary of the invention
For above-mentioned technical problem, the present invention proposes a kind of ribbon beam inductive output tube, to realize the microwave signal of high-peak power and high-gain, amplify output.
In order to achieve this end, as one aspect of the present invention, the invention provides a kind of ribbon beam inductive output tube, comprising:
Grided electron gun, for realizing transmitting and the convergence of electron beam;
Input cavity 2, for feed-in microwave signal, and forms high-frequency electric field, and the electron beam of described grided electron gun transmitting is modulated into electron beam;
Output cavity 11, for amplifying output by energy exchange to the described microwave signal of input.
Wherein, described grided electron gun comprises heater 1, ribbon beam negative electrode 3 and grid 8, described ribbon beam negative electrode 3 divergent bundles, and 8 pairs of described electron beams of grid are assembled.
Wherein, between the aperture plate of described grid 8 and described ribbon beam negative electrode 3, form high-frequency electric field, realize the density modulation of described ribbon beam negative electrode 3 emission currents.
Wherein, described ribbon beam negative electrode 3 has the surface of emission of arcuation, and density modulation electronics is provided under hot state.
Wherein, described output cavity 11 adopts dumbbell shape expansion mutual effect structure.
Wherein, the quantity of the dumbbell shape of described output cavity 11 expansion mutual effect structure intermediate gap is N, by the dumbbell shape resonant cavity of N single gap, by open groove in bulge, realizes coupling, and wherein N is positive integer.
Wherein, the quantity of the dumbbell shape of described output cavity 11 expansion mutual effect structure intermediate gap is 5.
Wherein, the high-frequency microwave of described output cavity 11 is transferred to output waveguide 9 by the coupling aperture 10 of output cavity 11.
As another aspect of the present invention, the present invention also provides a kind of output cavity of inductive output tube, and wherein said output cavity 11 adopts dumbbell shape expansion mutual effect structure.
Wherein, the quantity of the dumbbell shape of described output cavity 11 expansion mutual effect structure intermediate gap is N, by the dumbbell shape resonant cavity of N single gap, by open groove in bulge, realizes coupling, and wherein N is positive integer.
From technique scheme, ribbon beam inductive output tube of the present invention, is having its unique advantage improving aspect bandwidth, gain and power, has solved that traditional klystron is large at low-frequency range volume, cost is high, safeguard complicated shortcoming; Compare with microwave three, tetrode, IOT can be operated in higher frequency, larger power, efficiency, has higher gain; Also solved the deficiency that traditional inductive output tube gain is low, frequency band is narrow and power is little simultaneously; In addition, adopt the inductive output tube of dumbbell shape expansion mutual effect output cavity to have higher power, gain and efficiency, structure is more simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of ribbon beam inductive output tube of the present invention (IOT);
Fig. 2 is the structural representation of ribbon beam negative electrode of the present invention;
Fig. 3 a, 3b, 3c are respectively narrow edge direction structural representation, broadside structural representation and the transverse cross-sectional view of dumbbell shape Extended interaction oscillator of the present invention;
Fig. 4 is the structural representation of dumbbell shape expansion mutual effect output cavity of the present invention.
Description of reference numerals:
1, heater, 2, input cavity, 3, ribbon beam negative electrode, 4, coaxial input cable, 5, high frequency choke coil, 6, anode, 7, electron gun insulation porcelain, 8, grid, 9, output waveguide, 10, coupling aperture, 11, output cavity, 12, collector insulation porcelain, 13, stripe electron beam, 14, collector.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.It should be noted that, in accompanying drawing or specification description, similar or identical part is all used identical figure number.The implementation that does not illustrate in accompanying drawing or describe is form known to a person of ordinary skill in the art in affiliated technical field.In addition, although the demonstration of the parameter that comprises particular value can be provided herein, should be appreciated that, parameter is without definitely equaling corresponding value, but can in acceptable error margin or design constraint, be similar to corresponding value.
The operation principle of ribbon beam inductive output tube of the present invention is: efferent duct is in low-frequency range work, at dumbbell shape expansion mutual effect output cavity, there is the mutual effect of note ripple with the electron beam of input system from density modulation, the DC energy of electron beam is changed into high-frequency microwave energy, thereby realized the amplification of microwave signal.
In one exemplary embodiment of the present invention, ribbon beam inductive output tube of the present invention, as shown in Figure 1, by three parts, formed, first is input system, grid-control strip beam electron gun and input cavity 2, consists of, and the microwave signal of its feed-in is injected input cavity 2 by coaxial input cable 4, between mesh grid 8 and ribbon beam negative electrode 3, form high-frequency electric field, realize the density modulation of ribbon beam negative electrode 3 electron emissions; Second portion is output cavity 11, dumbbell shape resonant cavity, consists of, and has adopted many gap expansion mutual effect structures, thereby has realized the raising of power capacity, efficiency and the gain of this output cavity 11, and the high-frequency microwave in its cavity is exported by output waveguide 9; Third part is collector 14, has collected the energy of the electron beam of note-Bo mutual effect.Wherein, after the acceleration of anode 6, there is energy exchange with dumbbell shape expansion mutual effect output cavity 11 in the electron beam of density modulation, and high-frequency energy is exported from output waveguide 9 by coupling aperture 10.
Below respectively each part of ribbon beam inductive output tube of the present invention embodiment is described in detail.
With reference to Fig. 1, grided electron gun is by heater 1, ribbon beam negative electrode 3 and grid 8 form, heater 1 is to be formed by well behaved tungsten filament coiling, object is to 3 heating of ribbon beam negative electrode, input cavity 2 is cylinder reentrant cavities, its drift gap consists of grid 8 and ribbon beam negative electrode 3, the structure of ribbon beam negative electrode 3 as shown in Figure 2, the surface of emission with arcuation, density modulation electronics is provided under hot state, this negative electrode is comprised of barium tungsten material, its object can make this negative electrode be operated in higher temperature and be unlikely to evapotranspire too soon, thereby effectively raise negative electrode useful life.Electron beam from 3 transmittings of ribbon beam negative electrode, has formed stripe electron beam 13 after the converging action by grid 8 and anode 6.Input cavity 2 is connected with electron gun insulating ceramics 7 one end, this electron gun insulating ceramics 7 is that the grid 8 to electron gun provides withstand voltage support with anode 6, the microwave of input cavity 2 injects by coaxial input cable 4 to be realized, and coaxial input cable 4 provides the input microwave power of high frequency for input cavity 2.At grid 8 and the input cavity 2 sidewalls high frequency choke coil 5 of ining succession.
Referring to Fig. 1, dumbbell shape expansion mutual effect output cavity 11 is connected with the other end of electron gun insulation porcelain 7, this dumbbell shape expansion mutual effect output cavity 11 is realized coupling by the dumbbell shape resonant cavity of five single gap by open groove in bulge, the structure of its dumbbell shape ribbon beam resonant cavity as shown in Figure 3, Fig. 3 a and 3b are that Fig. 3 c is the horizontal section schematic diagram of vertical drift channel direction along the narrow limit of drift passage and the structural representation of broadside; There is energy exchange with dumbbell shape expansion mutual effect output cavity 11 in ribbon-like electron note 13, Fig. 4 is the generalized section along drift passage broadside of dumbbell shape expansion mutual effect output cavity 11, the high-frequency microwave of its generation is transferred to output waveguide 9 by coupling aperture 10, and the other end of dumbbell shape expansion mutual effect output cavity 11 is connected with collector insulation porcelain 12.Referring to Fig. 1, the other end being connected with collector insulation porcelain 12 is collector 14, and this collector 14 is realized the excess electron after effective recuperated energy exchange, and collector 14 consists of the copper metal material of barrel-like structure, can effectively realize the transmission of heat.
Grided electron gun, when input cavity 2 injects high-frequency microwave, can produce high frequency voltage at grid 8, and making from the electron beam of ribbon beam negative electrode 3 transmittings has been density modulation.Between ribbon beam negative electrode 3 and grid 5, form high frequency voltage, thereby control the current emission density of ribbon beam negative electrode 3, between electron gun insulating ceramics 7 and anode 6, be also added with high pressure, electron beam after grid 8 density modulations is constantly accelerated during passing through anode 6 processes, after short-range drift space, electron beam arrives dumbbell shape expansion mutual effect output cavity 11, note with it-Bo mutual effect, the microwave producing is by coupling aperture 10 and output waveguide 9 outputs, be collected the utmost point 14 recovery with the electron beam 13 after the 11 note-Bo mutual effects of dumbbell shape expansion mutual effect output cavity, form with heat is collected the utmost point 14 absorptions.
When the electron beam of density modulation arrives dumbbell shape expansion mutual effect output cavity 11, there is with it energy exchange, thereby effectively realized the conversion of microwave energy, owing to having adopted preferred dumbbell shape expansion mutual effect output cavity structure, its gain, efficiency and power all increase significantly.Certainly, the structure of output cavity is not limited only to dumbbell shape expansion mutual effect structure, also can adopt off-gauge similar structures to replace, such as trapezium structure, Hughes's structure etc.And the quantity of dumbbell shape expansion mutual effect structure intermediate gap is also not limited to the quantity in Fig. 3, can adopt different parameters to replace, for example number of gaps be 2,3,4,6 ..., N, wherein N is positive integer.
The structure of each part of ribbon beam inductive output tube of the present invention is all passed through the design of accurate electrical property and engineering design, then by precision optical machinery, process, and soldering and baking is got rid of the techniques such as gas and manufactured.And adopt dumbbell shape to expand the output cavity of mutual effect, and structure is simple and easy to processing more, and PROCESS FOR TREATMENT difficulty is little, and cost is cheaper.
Proof, utilizes ribbon beam inductive output tube of the present invention by experiment, can aspect high power, high efficiency and high-gain, obtain more attracting index, and its power ratio tradition inductive output tube exceeds 50%, and efficiency can bring up to 70%, and gain improves 10dB.
In sum, the invention provides a kind of ribbon beam inductive output tube, compare traditional inductive output tube, can effectively realize high power, high efficiency and high-gain in low-frequency range, solve traditional microwave three, tetrode and the klystron unfavorable factor in low-frequency range, greatly improved the property indices in low-frequency range of inductive output tube.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a ribbon beam inductive output tube, comprising:
Grided electron gun, for realizing transmitting and the convergence of electron beam;
Input cavity (2), for feed-in microwave signal, and forms high-frequency electric field, and the electron beam of described grided electron gun transmitting is modulated into electron beam; And
Output cavity (11), for amplifying output by energy exchange to the described microwave signal of input.
2. ribbon beam inductive output tube according to claim 1, wherein said grided electron gun comprises heater (1), ribbon beam negative electrode (3) and grid (8), described ribbon beam negative electrode (3) divergent bundle, grid (8) is assembled described electron beam.
3. ribbon beam inductive output tube according to claim 2 wherein forms high-frequency electric field between the aperture plate of described grid (8) and described ribbon beam negative electrode (3), realizes the density modulation of described ribbon beam negative electrode (3) emission current.
4. ribbon beam inductive output tube according to claim 2, wherein said ribbon beam negative electrode (3) has the surface of emission of arcuation, and density modulation electronics is provided under hot state.
5. ribbon beam inductive output tube according to claim 1, wherein said output cavity (11) adopts dumbbell shape expansion mutual effect structure.
6. ribbon beam inductive output tube according to claim 5, the quantity of the dumbbell shape expansion mutual effect structure intermediate gap of wherein said output cavity (11) is N, dumbbell shape resonant cavity by N single gap is realized coupling by open groove in bulge, and wherein N is positive integer.
7. ribbon beam inductive output tube according to claim 6, the quantity of the dumbbell shape expansion mutual effect structure intermediate gap of wherein said output cavity (11) is 5.
8. ribbon beam inductive output tube according to claim 1, the high-frequency microwave of wherein said output cavity (11) is transferred to output waveguide (9) by the coupling aperture (10) of output cavity (11).
9. an output cavity for inductive output tube, wherein said output cavity (11) adopts dumbbell shape expansion mutual effect structure.
10. the output cavity of inductive output tube according to claim 9, the quantity of the dumbbell shape expansion mutual effect structure intermediate gap of wherein said output cavity (11) is N, dumbbell shape resonant cavity by N single gap is realized coupling by open groove in bulge, and wherein N is positive integer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410409518.0A CN104134595A (en) | 2014-08-19 | 2014-08-19 | Sheet beam inductive output tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410409518.0A CN104134595A (en) | 2014-08-19 | 2014-08-19 | Sheet beam inductive output tube |
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| CN104134595A true CN104134595A (en) | 2014-11-05 |
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| CN201410409518.0A Pending CN104134595A (en) | 2014-08-19 | 2014-08-19 | Sheet beam inductive output tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113658838A (en) * | 2021-08-13 | 2021-11-16 | 中国科学院空天信息创新研究院 | High frequency interaction circuit and method of manufacture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2753482A (en) * | 1950-11-22 | 1956-07-03 | Hartford Nat Bank & Trust Co | Device comprising an electric discharge tube |
| US4567406A (en) * | 1983-05-16 | 1986-01-28 | Siemens Aktiengesellschaft | High-gain Klystron-tetrode |
| US4611149A (en) * | 1984-11-07 | 1986-09-09 | Varian Associates, Inc. | Beam tube with density plus velocity modulation |
| US20030030390A1 (en) * | 1999-01-14 | 2003-02-13 | Northrop Grumman Corporation | Broadband, inverted slot mode, coupled cavity circuit |
| CN103632907A (en) * | 2012-08-23 | 2014-03-12 | 中国科学院电子学研究所 | Band-shaped beam klystron multi-gap cavity output apparatus |
-
2014
- 2014-08-19 CN CN201410409518.0A patent/CN104134595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2753482A (en) * | 1950-11-22 | 1956-07-03 | Hartford Nat Bank & Trust Co | Device comprising an electric discharge tube |
| US4567406A (en) * | 1983-05-16 | 1986-01-28 | Siemens Aktiengesellschaft | High-gain Klystron-tetrode |
| US4611149A (en) * | 1984-11-07 | 1986-09-09 | Varian Associates, Inc. | Beam tube with density plus velocity modulation |
| US20030030390A1 (en) * | 1999-01-14 | 2003-02-13 | Northrop Grumman Corporation | Broadband, inverted slot mode, coupled cavity circuit |
| CN103632907A (en) * | 2012-08-23 | 2014-03-12 | 中国科学院电子学研究所 | Band-shaped beam klystron multi-gap cavity output apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113658838A (en) * | 2021-08-13 | 2021-11-16 | 中国科学院空天信息创新研究院 | High frequency interaction circuit and method of manufacture |
| CN113658838B (en) * | 2021-08-13 | 2024-02-06 | 中国科学院空天信息创新研究院 | High-frequency interaction circuit and preparation method thereof |
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Application publication date: 20141105 |