CN101609775A - Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window - Google Patents
Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window Download PDFInfo
- Publication number
- CN101609775A CN101609775A CNA2008101151588A CN200810115158A CN101609775A CN 101609775 A CN101609775 A CN 101609775A CN A2008101151588 A CNA2008101151588 A CN A2008101151588A CN 200810115158 A CN200810115158 A CN 200810115158A CN 101609775 A CN101609775 A CN 101609775A
- Authority
- CN
- China
- Prior art keywords
- circular waveguide
- millimeter wave
- medium
- cooling
- output window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Microwave Tubes (AREA)
- Waveguide Connection Structure (AREA)
Abstract
A kind of large-power broadband millimeter wave gyrotron surface-cooling sapphire output window of the present invention relates to the electron tube technology, comprises that millimeter wave crosses mould circular waveguide, medium block; It has three medium block pressure-tight welds to be connected on millimeter wave to cross in the mould circular waveguide, be positioned at the vertical direction of power delivery, and central medium piece bilateral symmetry is placed the medium block of two same thickness; The employing face type of cooling: in the inboard of media of both sides piece, be positioned on two semi-circumferences of circular waveguide sidewall and be laid with two groups of most metal aperture, coolant is flowed in the circular waveguide by one group of metal aperture, flow out circular waveguide by another group metal aperture, realize face cooling medium block.The present invention has advantages such as loss is little, bandwidth is wide, intensity of cooling is high, the good and difficult puncture of air-tightness, is applicable to that generation is greater than the 2KW average power, greater than the millimeter wave gyrotron of 1.5GHz bandwidth.
Description
Technical field
The present invention relates to the electron tube technical field, is a kind of big average power, broadband millimeter wave gyrotron output window.
Background technology
High-power, broadband millimeter wave gyrotron is the core component of electronic countermeasures, accurate guidance and high-resolution imaging radar.Output window is one of critical component of gyrotron, and it is the output window of millimeter wave power, has determined the working band and the power capacity of device to a certain extent.At present the alumina ceramic window that adopts, beryllia ceramic window, sapphire monolithic window, sapphire biplate window, quartzy three gates etc. have that loss is big, power capacity is low, shortcoming such as poisonous, narrow bandwidth.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of large-power broadband millimeter wave gyrotron surface-cooling sapphire output window is provided, be applicable to that generation is greater than the 2KW average power, greater than the effective output window of the millimeter wave gyral of 1.5GHz bandwidth, it helps improving power capacity, increases the working band width.
For achieving the above object, technical solution of the present invention is:
A kind of large-power broadband millimeter wave gyrotron surface-cooling sapphire output window comprises that millimeter wave crosses mould circular waveguide, medium block; It has three complete circle sheet medium pieces, and its diameter equates with mistake mould circular waveguide internal diameter; Three medium blocks have the pressure-tight weld of a spacing to be connected on millimeter wave to cross in the mould circular waveguide, be positioned at the vertical direction of power delivery each other, and two medium block thickness that central medium piece bilateral symmetry is placed are identical;
The employing face type of cooling: in the inboard of media of both sides piece, be positioned on two semi-circumferences of circular waveguide sidewall and be laid with two groups of most metal aperture, coolant is flowed in the circular waveguide by one group of metal aperture, flow out circular waveguide by another group metal aperture, realize face cooling medium block.
Described output window, its described airtight welding is earlier the medium block outer circumference surface to be metallized, and implements airtight welding again.
Described output window, the thickness of its described three medium blocks are 1/2nd 1 times or 2 times of wavelength under the matching frequency.
Described output window, the thickness of its described central medium piece are 1/2nd 1 times or 2 times of wavelength under the matching frequency, the thickness of media of both sides piece be under the matching frequency wavelength 1/2nd.
Described output window, its described coolant are air or fluorocarbon FC-75.
Described output window, the diameter dimension of its described medium block or greater than the interior diameter of circular waveguide.
Described output window, its described medium block is a sapphire.
The present invention compared with prior art, employing face cooling helps improving the through-put power capacity; Matching performance is good, can work in broadband.Have in addition that loss is little, air-tightness good and be difficult for advantage such as puncture.It is applicable to the millimeter wave gyrotron of big average power, broadband operation.
Description of drawings
Fig. 1 is the first kind structural representation of large-power broadband millimeter wave gyrotron of the present invention with the surface-cooling sapphire output window, and wherein, Fig. 1 (a) is the longitudinal profile schematic diagram of structure, and Fig. 1 (b) is the cross sectional representation of structure;
Fig. 2 is the second kind structural representation of large-power broadband millimeter wave gyrotron of the present invention with the surface-cooling sapphire output window, and wherein, Fig. 2 (a) is the longitudinal profile schematic diagram of structure, and Fig. 2 (b) is the cross sectional representation of structure;
Fig. 3 is the voltage standing wave ratio HFSS simulation result curve chart of example 1;
Fig. 4 is the voltage standing wave ratio HFSS simulation result curve chart of example 2.
Embodiment
See shown in Fig. 1 (a), Fig. 1 (b), Fig. 2 (a), Fig. 2 (b), be large-power broadband millimeter wave gyrotron surface-cooling sapphire output window of the present invention.It is made up of circular waveguide and three medium blocks, and the medium block pressure-tight weld is connected in the circular waveguide, is positioned at the vertical direction of power delivery, and central medium piece bilateral symmetry is placed two medium blocks, with the reflection that compensation intermediate medium piece causes, widens working band.The thickness of central medium piece is 1/2nd 1 times or 2 times of wavelength under the matching frequency, the medium block of both sides be under the matching frequency wavelength 1/2nd, medium block adopts sapphire to make.The sapphire medium block adopts the face type of cooling.It has advantages such as loss is little, bandwidth is wide, intensity of cooling is high, the good and difficult puncture of air-tightness, is applicable to that generation is greater than the 2KW average power, greater than the millimeter wave gyrotron of 1.5GHz bandwidth.
The diameter that millimeter wave is crossed the mould circular waveguide is D.Medium block adopts sapphire, the thickness L0 of medium block to equal half 1 times or 2 times of central task wavelength, and the diameter dimension of medium block is equal to or slightly greater than the interior diameter D of circular waveguide.The distance L of media of both sides piece and central medium piece is determined according to the optimization Simulation designing and calculating.Because the normalized susceptance of medium block reflection changes with frequency, so can adopt Optimization Design to draw the optimum size that satisfies the working band requirement, determines medium block thickness and the spacing L between them thereof.
The employing face type of cooling, coolant are air or fluorocarbon FC-75.Coolant is that a plurality of metal aperture of d import and export by diameter.The diameter dimension d of metal aperture is in cut-off state for operating frequency.According to processes, the cleaning of electron tube, earlier the sapphire medium block is metallized according to Chinese patent 03147557.4, implement welding again, promptly can be made into the gyrotron output window.
Embodiment 1:L0=L1=1.38mm, L=1.58mm, D=36mm adopts air cooling, for the 34.22-35.76GHz standing internal wave is 1.54GHz than the bandwidth less than 1.1, as shown in Figure 3, is the voltage standing wave ratio HFSS simulation result of embodiment 1 in frequency.
Embodiment 2:L0=2.72mm, L1=1.36mm, L=2.7mm, D=36mm, D1=38mm adopts air cooling, for the 33.50-36.13GHz standing internal wave is 2.63GHz than the bandwidth less than 1.1, as shown in Figure 4, be the voltage standing wave ratio HFSS simulation result of embodiment 2 in frequency.
Claims (7)
1, a kind of large-power broadband millimeter wave gyrotron surface-cooling sapphire output window comprises that millimeter wave crosses mould circular waveguide, medium block; It is characterized in that three complete circle sheet medium pieces are arranged, its diameter equates with mistake mould circular waveguide internal diameter; Three medium blocks have the pressure-tight weld of a spacing to be connected on millimeter wave to cross in the mould circular waveguide, be positioned at the vertical direction of power delivery each other, and two medium block thickness that central medium piece bilateral symmetry is placed are identical; The employing face type of cooling: in the inboard of media of both sides piece, be positioned on relative two semi-circumferences of circular waveguide sidewall and be laid with two groups of most metal aperture, coolant is flowed in the circular waveguide by one group of metal aperture, flow out circular waveguide by another group metal aperture, realize face cooling medium block.
2, output window according to claim 1 is characterized in that, described airtight welding is earlier the medium block outer circumference surface to be metallized, and implements airtight welding again.
3, output window according to claim 1 is characterized in that, the thickness of described three medium blocks is 1/2nd 1 times or 2 times of wavelength under the matching frequency.
4, output window according to claim 1 is characterized in that, the thickness of described central medium piece is 1/2nd 1 times or 2 times of wavelength under the matching frequency, the thickness of media of both sides piece be under the matching frequency wavelength 1/2nd.
5, output window according to claim 1 is characterized in that, described coolant is air or fluorocarbon FC-75.
6, according to claim 1,2,3 and 4 described output windows, it is characterized in that the diameter dimension of described medium block or greater than the interior diameter of circular waveguide.
According to claim 1,2,3 and 4 described output windows, it is characterized in that 7, described medium block is a sapphire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101151588A CN101609775A (en) | 2008-06-18 | 2008-06-18 | Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101151588A CN101609775A (en) | 2008-06-18 | 2008-06-18 | Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101609775A true CN101609775A (en) | 2009-12-23 |
Family
ID=41483466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101151588A Pending CN101609775A (en) | 2008-06-18 | 2008-06-18 | Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101609775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465274A (en) * | 2014-12-04 | 2015-03-25 | 电子科技大学 | Novel broadband high-average-power air cooling structure output window |
| CN108156744A (en) * | 2018-01-18 | 2018-06-12 | 中国科学院近代物理研究所 | The power input coupler of double hot window types |
| CN114823254A (en) * | 2022-04-22 | 2022-07-29 | 电子科技大学 | Ultra-wideband super-surface output window for gyrotron traveling wave tube |
-
2008
- 2008-06-18 CN CNA2008101151588A patent/CN101609775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465274A (en) * | 2014-12-04 | 2015-03-25 | 电子科技大学 | Novel broadband high-average-power air cooling structure output window |
| CN108156744A (en) * | 2018-01-18 | 2018-06-12 | 中国科学院近代物理研究所 | The power input coupler of double hot window types |
| CN114823254A (en) * | 2022-04-22 | 2022-07-29 | 电子科技大学 | Ultra-wideband super-surface output window for gyrotron traveling wave tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205543159U (en) | Microwave output window | |
| CN112615123B (en) | Angular power division waveguide structure applied to medium-loaded gyrotron traveling wave tube | |
| CN108962706B (en) | Medium-staggered double-gate slow wave structure | |
| CN105489975A (en) | Microwave output window and manufacturing method thereof | |
| CN112420469B (en) | Traveling wave tube slow wave structure suitable for high-power work | |
| CN109872936B (en) | Spiral-like slow wave device | |
| CN100583368C (en) | Complete waveguide bandwidth standard waveguide output high power helix TWT | |
| CN101609775A (en) | Large-power broadband millimeter wave gyrotron surface-cooling sapphire output window | |
| CN104465274A (en) | Novel broadband high-average-power air cooling structure output window | |
| CN103632905B (en) | A kind of ladder track structure slow wave line | |
| CN107546449B (en) | Novel high-power microwave millimeter wave air-cooled cone structure absorption dry load | |
| CN102915898B (en) | Zigzag waveguide slow-wave line | |
| CN203631481U (en) | Waveguide-box-shaped output window of ultra wideband travelling wave tube | |
| CN109994350B (en) | Energy coupling device from H-surface insertion type rectangular waveguide to staggered double gates | |
| CN110335796B (en) | Ribbon electron beam double-groove trapezoidal line coupling cavity slow wave device | |
| CN203607364U (en) | Slow wave line of trapezoidal line structure | |
| CN106785282B (en) | High-power waveguide load | |
| CN113161216B (en) | Compact double-confocal waveguide cyclotron traveling wave tube input coupler | |
| CN204333200U (en) | The spatial power combiner of a kind of waveguide-bis-Coupler in finline-microstrip line form | |
| CN104183444A (en) | Folding waveguide slow-wave structure provided with electron beam channel with progressively decreasing internal diameter dimension | |
| CN209216913U (en) | The slow wave circuit of the L-band wideband pulse travelling-wave tubes of small size | |
| CN104538718A (en) | Waveguide double antipodal fin-line and microstrip line type space power synthesizer | |
| CN2185474Y (en) | High-frequency window for millimeter wave tube | |
| CN213905572U (en) | Broadband input coupler of Ka-band cyclotron traveling wave amplifier | |
| CN111243920B (en) | Planar microwave energy transmission window |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091223 |