CN108550510A - A kind of gyrotron traveling wave tube input coupler with high electronic beam current passband - Google Patents
A kind of gyrotron traveling wave tube input coupler with high electronic beam current passband Download PDFInfo
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- CN108550510A CN108550510A CN201810212092.8A CN201810212092A CN108550510A CN 108550510 A CN108550510 A CN 108550510A CN 201810212092 A CN201810212092 A CN 201810212092A CN 108550510 A CN108550510 A CN 108550510A
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- waveguide
- circular waveguide
- circle
- input coupler
- reflection
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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
- H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
- H01J23/38—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the discharge
Abstract
A kind of gyrotron traveling wave tube input coupler with high electronic beam current passband of the disclosure of the invention, is related to microwave, millimetric wave device technical field.The present invention introduces a kind of electronics note/microwave channel structure on the basis of traditional gyrotron traveling wave tube input coupler.The cut-off circular waveguide radius of traditional input coupler is 0.7 times or so of input coupler circular waveguide radius, cut-off waveguide in the present invention is replaced by three cascade reflection cylinder resonators, transmission waveguide radius between cylinder resonator is identical as input circular waveguide, therefore the channel of electronics note is big compared with traditional input coupler, electronics beam passband higher can thus be deteriorated to avoid the circulation of electron beam and changeover portion is burnt.Certain thickness load attenuating material is arranged in cascade reflection cylindrical cavity, for the competitive mode for TE01 moulds of decaying, in the total reflection that TE01 moulds may be implemented by optimizing cylinder resonator size, the content and purity of output circular waveguide TE01 moulds are improved, working band can be effectively expanded.
Description
Technical field
It is specifically a kind of with high electronic beam current passband the present invention relates to microwave, millimetric wave device technical field
Gyrotron traveling wave tube input coupler.
Background technology
Gyrotron traveling wave tube is a kind of important microwave and millimeter wave signal amplifier, it uses the work side of fast wave transverse direction transducing
Formula compares traditional electron tube, not only has the advantages that high power and high-frequency, and in terms of bandwidth of operation and velocity modulation
The devices such as pipe, oscillating tube, which are compared, has larger advantage, in mm-wave imaging radar, millimeter-wave communication system and electronic warfare etc.
There is highly important application prospect in field, therefore has attracted much attention in the world.
Input coupler is one of core component of gyrotron traveling wave tube.Input coupler is to complete input signal pattern transformation
And energy or the high-frequency element of velocity modulation are carried out to circulating electrons, its performance closely related with the cybotactic state of electronics note
Directly affect the performance of gyrotron traveling wave tube homogeneous tube.The input coupler of gyrotron traveling wave tube is three port devices, including an input
Rectangular port and two output circular waveguide ports, the electron gun area that one of output port passes through changeover portion and gyrotron traveling wave tube
It is connected, another output port is directly connected with gyrotron traveling wave tube high frequency interaction section.For traditional gyrotron traveling wave tube
Input coupler in order to improve mode conversion efficiency, while preventing the electromagnetism wave direction electron gun area of input from propagating, and then influences back
The stability of rotating wave duct, usually in input coupler and transition one section of cut-off waveguide ended to operating mode of intersegmental setting.
But 0.7 times or so of the radius of cut-off waveguide usually only input coupler circular waveguide radius, when electron beam is by ending section,
There is substantial portion of electron beam that will be intercepted and captured by cut-off section, the circulation of electron beam is caused to be deteriorated.In addition, in high duty ratio or
Under continuous wave state, the electron beam that this part is trapped is since the energy of carrying is higher, it is easy to cause burning for changeover portion.This
Invention is based on the input coupler structure that a kind of novel high electron beam circulation is proposed under such background.
Invention content
It is passed to and changeover portion burnout problems to solve the traditional input coupler electronic beam current of gyrotron traveling wave tube, the present invention
It is proposed a kind of gyrotron traveling wave tube input coupler structure with high electronic beam current passband.
The present invention introduces a kind of electronics note/microwave channel knot on the basis of traditional gyrotron traveling wave tube input coupler
Structure.The cut-off circular waveguide radius of traditional input coupler is 0.7 times or so of input coupler circular waveguide radius, in the present invention
Cut-off waveguide is replaced by three cascade reflection cylinder resonators, the transmission waveguide radius between cylinder resonator and input circular waveguide
It is identical, therefore the channel of electronics note is big compared with traditional input coupler, electronics beam passband higher thus can be to avoid electron beam
Circulation be deteriorated and changeover portion burn.Certain thickness load attenuating material is arranged in cascade reflection cylindrical cavity, for declining
The competitive mode for subtracting TE01 moulds improves output circle in the total reflection that TE01 moulds may be implemented by optimizing cylinder resonator size
The content and purity of waveguide TE01 moulds, can effectively expand working band.
Technical solution of the present invention is a kind of gyrotron traveling wave tube input coupler with high electronic beam current passband, the coupler
Including：Input rectangular waveguide (1), output circular waveguide (4), coaxial resonance circular waveguide (2), three-stage cascade circle reflection waveguide (5)；
The input rectangular waveguide is set to the lateral wall of coaxial resonance circular waveguide；The three-stage cascade circle reflection waveguide includes interval
The first order circle of setting reflects waveguide, and second level circle reflects waveguide, and third level circle reflects waveguide, the first order to the third level
The cavity radius length all same of circle reflection waveguide；The output circular waveguide (4), coaxial resonance circular waveguide (2), three-stage cascade
Circle reflection waveguide coaxial line；The output circular waveguide outer wall sets gradually coaxial resonance circular waveguide (2), the reflection of first order circle
Waveguide, second level circle reflect waveguide, and third level circle reflects waveguide, and output circular waveguide end protrudes from the reflection of third level circle
Waveguide；Rectangle coupling gap is offered on the outer wall that output circular waveguide is located in coaxial resonance circular waveguide cavity；Export circular waveguide
Cavity and three-stage cascade circle reflect the cavitys at different levels of waveguide and be connected to completely；The coaxial resonance circular waveguide (2) is tightly attached to
Level-one circle reflects waveguide.
Further, the length of the output circular waveguide is 10mm, radius 5.72mm；Coaxially the length of resonance circular waveguide is
15.26mm, radius 9.1mm；The length that first order circle reflects waveguide is 5mm, radius 12.5mm；Second level circle reflection
The length of waveguide is 5mm, radius 12.5mm；The length that third level circle reflects waveguide is 5mm, radius 12.5mm.
Further, 5 are uniformly provided on the outer wall that the output circular waveguide is located in coaxial resonance circular waveguide cavity
Rectangle couples gap, wherein a coupling gap is opened in the lower section of input rectangular waveguide.
Further, it is provided with ceramic attenuator material on the chamber outer wall of the round reflection waveguide at different levels；In order to abundant
The TE01 mode competition patterns of decaying, the ceramic attenuator material thickness that circles at different levels reflect on the outside of the cavitys of waveguides successively increase.
The beneficial effects of the present invention are：
(1) compared to traditional input coupler, cut-off circular waveguide is replaced using cascade resonant cavity, increases electronics note
Channel makes electronics beam passband higher, and the circulation for avoiding electron beam is deteriorated and changeover portion is burnt.
(2) cascade reflection cylindrical cavity realizes the total reflection of TE01 moulds, ensures that TE10 patterns are unidirectional by output circle wave
The output attenuating material that outside loads simultaneously is led, the competitive mode for TE01 moulds of decaying improves the purity of output circular waveguide TE01 moulds
And then promote the stability of homogeneous tube.
Description of the drawings
The input coupler schematic diagram of high electron beam circulation novel Fig. 1；
The input coupler front view of high electron beam circulation novel Fig. 2；
The input coupler side view of high electron beam circulation novel Fig. 3；
Configured transmission between the input coupler TE10-TE01 of high electron beam circulation novel Fig. 4；
Configured transmission between each pattern of input coupler of high electron beam circulation novel Fig. 5.
Specific implementation mode
The design example of the input coupler for the novel high electron beam circulation for being operated in Ka wave bands with reference to one with
And the present invention is further elaborated for attached drawing：
Main waveguide work pattern：TE01 moulds；
Input signal pattern：Rectangular waveguide TE10 moulds；
Working frequency range：Ka wave bands (32GHz-36GHz)；
Attached drawing 1 is the input coupler schematic diagram of the high electron beam circulation of the present invention；High electron beam novel Fig. 2 circulates defeated
Enter coupler front view；The input coupler side view of high electron beam circulation novel Fig. 3.The invention includes：Input rectangular wave
Lead (1), output circular waveguide (4), coaxial resonance circular waveguide (2), three-stage cascade circle reflection waveguide (5)；The input rectangular wave
Lead the lateral wall for being set to coaxial resonance circular waveguide；The three-stage cascade circle reflection waveguide includes spaced first order circle
Shape reflects waveguide, and second level circle reflects waveguide, and third level circle reflects waveguide, and the first order to third level circle reflects waveguide
Radius is identical, and sidewall thickness successively increases；The output circular waveguide (4), coaxial resonance circular waveguide (2), three-stage cascade are round anti-
Ejected wave leads coaxial line；The output circular waveguide outer wall sets gradually coaxial resonance circular waveguide (2), the reflection waveguide of first order circle,
Second level circle reflects waveguide, and third level circle reflects waveguide, and output circular waveguide end protrudes from the reflection waveguide of third level circle；
Rectangle coupling gap is offered on the outer wall that output circular waveguide is located in coaxial resonance circular waveguide cavity；Export the cavity of circular waveguide
The cavitys at different levels that waveguide is reflected with three-stage cascade circle are connected to completely；The coaxial resonance circular waveguide (2) is tightly attached to first order circle
Shape reflects waveguide.It inputs rectangular waveguide (1) and inputs TE10 moulds to coaxial resonance circular waveguide (2), TE10 patterns enter coaxial humorous
It shakes and is changed into TE511 patterns between circular waveguide (3) internal and external conductor, TE511 patterns are input to output circular waveguide by coupling gap
In (5), while pattern is converted into the TE01 patterns in output circular waveguide by TE511 patterns, to for gyrotron traveling wave tube provide work
Circular waveguide TE01 moulds needed for making.Wherein：
Input rectangular waveguide (1)：It is long using standard rectangular waveguide model BJ320, broadside 7.12mm, narrow side 3.56mm
9.0mm。
Coaxial resonance circular waveguide (2)：Inner wire radius is r2=6.12mm, inner wall cavity thickness 0.4mm, outer conductor radius
For r3=9.1mm, length 15.26mm.
The rectangle coupling gap (3)：Width 0.2mm, length 4.6mm, it is equal apart from the upper and lower edge length of coaxial inner conductor
For 5.33mm, amount to 5 coupling gaps, first slot and rectangular waveguide center angle are 36 degree, and adjacent coupled seam angle is
72 degree.
Export circular waveguide (4)：Radius is r1=5.72mm, length 10mm.
Three-stage cascade circle reflects waveguide (5)：Radius is r4=12.5mm, length 5mm.Outer wall thickness is followed successively by 1mm,
2mm, 3mm.
Fig. 4 is configured transmission between the input coupler TE10-TE01 that the high electron beam of the present invention circulates.This is novel as seen from the figure
High electron beam circulation input coupler configured transmission three dB bandwidth coverage area from 32.41GHz to 35.18GHz, table
It is wider that the input coupler bandwidth of operation is illustrated.
Fig. 5 is the input coupler of the present invention high electron beam circulation to configured transmission between other patterns.As seen from the figure, it inputs
The configured transmission of TE10 moulds to other moulds at end is relatively low, in the frequency range of 32.77GHz to 34.87GHz, in -25dB
Below, it is seen that other patterns other than TE10 moulds to input terminal TE01 moulds have obtained preferable inhibition, to realize TE10-
The high effective model of TE01 is converted, and the circular waveguide TE01 moulds with higher degree are outputed.
Above example is only of the invention for convenience of description, and novel gyrotron traveling wave tube input coupler proposed by the present invention can be with
Suitable for other frequency ranges, specific size is determined by corresponding frequency range and operating mode.
Claims (4)
1. a kind of gyrotron traveling wave tube input coupler with high electronic beam current passband, the coupler include：Input rectangular waveguide
(1), output circular waveguide (4), coaxial resonance circular waveguide (2), three-stage cascade circle reflection waveguide (5)；The input rectangular waveguide
It is set to the lateral wall of coaxial resonance circular waveguide；The three-stage cascade circle reflection waveguide includes that the spaced first order is round
Waveguide is reflected, second level circle reflects waveguide, and third level circle reflects waveguide, and the first order to third level circle reflects the interior of waveguide
Chamber radius length all same；The output circular waveguide (4), coaxial resonance circular waveguide (2), the reflection waveguide of three-stage cascade circle are coaxial
Line；The output circular waveguide outer wall sets gradually coaxial resonance circular waveguide (2), the reflection waveguide of first order circle, and the second level is round
Waveguide is reflected, third level circle reflects waveguide, and output circular waveguide end protrudes from the reflection waveguide of third level circle；Export circular waveguide
Rectangle coupling gap is offered on the outer wall in coaxial resonance circular waveguide cavity；Export the cavity and three-stage cascade of circular waveguide
The cavitys at different levels of circle reflection waveguide are connected to completely；The coaxial resonance circular waveguide (2) is tightly attached to the reflection waveguide of first order circle.
2. a kind of gyrotron traveling wave tube input coupler with high electronic beam current passband as described in claim 1, feature exist
In it is described output circular waveguide length be 10mm, radius 5.72mm；The length of coaxial resonance circular waveguide is 15.26mm, and radius is
9.1mm；The length that first order circle reflects waveguide is 5mm, radius 12.5mm；The length of second level circle reflection waveguide is
5mm, radius 12.5mm；The length that third level circle reflects waveguide is 5mm, radius 12.5mm.
3. a kind of gyrotron traveling wave tube input coupler with high electronic beam current passband as described in claim 1, feature exist
Gap is coupled in being uniformly provided with 5 rectangles on the outer wall that the output circular waveguide is located in coaxial resonance circular waveguide cavity,
In one coupling gap be opened in input rectangular waveguide lower section.
4. a kind of gyrotron traveling wave tube input coupler with high electronic beam current passband as described in claim 1, feature exist
In being provided with ceramic attenuator material on the chamber outer walls of the round reflection waveguides at different levels；For the TE01 mode competitions fully decayed
Pattern, the ceramic attenuator material thickness that circles at different levels reflect on the outside of the cavitys of waveguides successively increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212092.8A CN108550510B (en) | 2018-03-15 | 2018-03-15 | Gyrotron traveling wave tube input coupler with high electron beam circulation rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212092.8A CN108550510B (en) | 2018-03-15 | 2018-03-15 | Gyrotron traveling wave tube input coupler with high electron beam circulation rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108550510A true CN108550510A (en) | 2018-09-18 |
| CN108550510B CN108550510B (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810212092.8A Active CN108550510B (en) | 2018-03-15 | 2018-03-15 | Gyrotron traveling wave tube input coupler with high electron beam circulation rate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293015A (en) * | 2020-02-20 | 2020-06-16 | 电子科技大学 | Compact type gyrotron traveling wave tube input system |
| CN112259940A (en) * | 2020-09-21 | 2021-01-22 | 西北核技术研究所 | Tunable mixed mode converter based on over-mode circular waveguide and design method thereof |
| CN114512387A (en) * | 2021-12-31 | 2022-05-17 | 电子科技大学 | Distributed radiation coupling loss circuit applied to gyrotron traveling wave tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044398A (en) * | 2009-10-21 | 2011-05-04 | 中国科学院电子学研究所 | Distributed amplification gyro traveling wave tube amplifier |
| CN103311622A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Absorption type harmonic suppression filter |
| CN104064423A (en) * | 2014-06-17 | 2014-09-24 | 电子科技大学 | Novel belt-shaped electron beam traveling-wave tube output structure |
-
2018
- 2018-03-15 CN CN201810212092.8A patent/CN108550510B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044398A (en) * | 2009-10-21 | 2011-05-04 | 中国科学院电子学研究所 | Distributed amplification gyro traveling wave tube amplifier |
| CN103311622A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Absorption type harmonic suppression filter |
| CN104064423A (en) * | 2014-06-17 | 2014-09-24 | 电子科技大学 | Novel belt-shaped electron beam traveling-wave tube output structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293015A (en) * | 2020-02-20 | 2020-06-16 | 电子科技大学 | Compact type gyrotron traveling wave tube input system |
| CN111293015B (en) * | 2020-02-20 | 2021-04-30 | 电子科技大学 | Compact type gyrotron traveling wave tube input system |
| CN112259940A (en) * | 2020-09-21 | 2021-01-22 | 西北核技术研究所 | Tunable mixed mode converter based on over-mode circular waveguide and design method thereof |
| CN114512387A (en) * | 2021-12-31 | 2022-05-17 | 电子科技大学 | Distributed radiation coupling loss circuit applied to gyrotron traveling wave tube |
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| CN108550510B (en) | 2020-01-14 |
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