CN102163528A - Multi-beam coupled cavity traveling-wave tube slow-wave structure and manufacturing method thereof - Google Patents
Multi-beam coupled cavity traveling-wave tube slow-wave structure and manufacturing method thereof Download PDFInfo
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- CN102163528A CN102163528A CN2011100567456A CN201110056745A CN102163528A CN 102163528 A CN102163528 A CN 102163528A CN 2011100567456 A CN2011100567456 A CN 2011100567456A CN 201110056745 A CN201110056745 A CN 201110056745A CN 102163528 A CN102163528 A CN 102163528A
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Abstract
The invention discloses a slow wave structure of a traveling wave tube with multiple coupled cavities and a manufacturing method thereof; the slow wave structure of the multi-beam coupled cavity traveling-wave tube is formed by a coupled cavity chain connected by a pole shoe and a copper ring; the pole shoes and the copper rings are alternately arranged, and coupling grooves which are staggered with each other by 180 degrees are arranged on the pole shoes and the copper rings; the pole piece thickness d1 is greater than the copper ring thickness d 2; the manufacturing method of the slow wave structure of the coupled cavity traveling wave tube comprises two steps. The thicknesses d1 and d2 of the pole shoe and the copper ring are changed, so that the pole shoe can conduct a larger magnetic field value without the phenomenon of magnetic field saturation; the method is simple and feasible to operate, and can effectively improve the electron beam passing rate and the working stability of the high-power multi-beam coupled cavity traveling-wave tube.
Description
Technical field
The present invention relates to the microwave vacuum field of electronic devices, be specifically related to a kind of coupled-cavity TWT slow wave structure and preparation method thereof of annotating more, relate in particular to coupled-cavity TWT slow wave structure that is used for high-power multi-traveling wave tube and preparation method thereof.
Background technology
Travelling wave tube has bandwidth, big, high, the reliability advantages of higher of efficient of gain as the vacuum microwave power amplifying device, has a wide range of applications in all kinds of military microwave transmitters, is described as " heart " of weaponry.
Travelling wave tube can be divided into helix TWT, coupled-cavity TWT, annotate coupled-cavity TWT etc. more according to its slow wave structure.Because the heat dispersion of many notes coupled-cavity TWT slow wave structures is fine, can bear sizable power, therefore annotates coupled-cavity TWT more and generally be used for powerful travelling wave tube.
But in the real work of many notes coupled-cavity TWTs, increase along with the travelling wave tube power output, its needed focusing magnetic field also requires bigger, magnetic field is saturated to cause electronics to be annotated defocusing thereby the pole shoe that soft iron is made in this moment travelling wave tube may occur, influence the percent of pass that electronics is annotated, finally may make travelling wave tube scrap.
Traditional high-power many notes coupling cavity slow wave structures as shown in Figure 1, slow wave structure is connected and composed by pole shoe 1 and copper ring 2, and wherein pole shoe 1 is generally electrical pure iron DT8 and is made by soft iron material, copper ring 2 all has coupling slot by oxygen-free copper TU1 material on pole shoe 1 and the copper ring 2.Pole shoe 1 and copper ring 2 are alternately arranged, and the mode of welding by soldering forms the cavity chain, and the cavity chain intercouples by the coupling slot that is located on pole shoe 1 and the copper ring 2, constitutes coupled cavity chain.These coupled cavity chains are connected with input/output unit, at the coupled cavity chain medium position absorber are set again, just constitute the coupling cavity slow wave system.
In order to obtain higher coupling impedance, the thickness d of the traditional high-power coupling cavity slow wave structure of many notes pole shoe
1Thickness d with copper ring
2Equate; The thickness d 3 of pole shoe 1 loading head equates with the thickness d 4 of copper ring 2 loading heads; Magnet steel is installed on the copper ring 2, and the internal diameter of magnet steel is identical with the external diameter of copper ring 2, and magnet steel 2 both sides closely cooperate with two pole shoes 1 simultaneously.Along with improving constantly of travelling wave tube power output, the requirement of the value of needed focusing magnetic field is also improved constantly, can be up to 3000Gs～5000Gs, in addition higher.Because it is limited making the magnetic permeability of the soft iron material of pole shoe 1, along with improving constantly of magnetic field value, will inevitably cause occurring in the pole shoe 1 the saturated phenomenon in magnetic field.In case it is saturated that magnetic field appears in pole shoe 1, the distribution of the magnetic line of force will change, and causes occurring on electronics is annotated the axle at place annotating the inconsistent radial field of the direction of motion and circumferentially with electronics, and the focusing that annotate electronics in these magnetic fields all is harmful to, and can be referred to as transverse field.In case bigger transverse field occurs on the axle that electronics is annotated, the flow rate that electronics is annotated will be very poor, cause the permanent magnet focusing system operational failures of annotating coupled-cavity TWT more, finally make travelling wave tube scrap.
Summary of the invention
The object of the present invention is to provide good many notes coupled-cavity TWT slow wave structure of a kind of electronics beam passband and preparation method thereof, reduce annotate high power travelling wave tubes because pole shoe magnetic field to occur saturated and cause electronics to be annotated defocusing the damage that travelling wave tube is caused; Further aim of the present invention for can guarantee the travelling wave tube electronics annotate with the coupling impedance of microwave signal and and itself dispersion characteristics do not change.
To achieve these goals, the technical solution used in the present invention is:
The described this coupled-cavity TWT slow wave structures of annotating more, the coupled cavity chain that is connected with copper ring by pole shoe constitutes; Described pole shoe and copper ring are alternately arranged, and being provided with on described pole shoe and copper ring staggers mutually is the coupling slot of 180 ° of arrangements; The thickness d 1 of described pole shoe is greater than the thickness d 2 of described copper ring.
As further improvement, described pole shoe thickness d1 is 0.4～0.5 times of traveling wave tube slow-wave system period L; Described copper ring thickness d 2 is 0.2～0.3 times of traveling wave tube slow-wave system period L.
As further improvement, the coupling slot angle of described pole shoe is greater than the coupling slot angle of described copper ring.
As further improvement, the loading head thickness d 3 of described pole shoe is greater than the loading head thickness d 4 of described copper ring.
As further improvement, d3: d4=d1: d2.
The described manufacture method of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2;
(2) pole shoe that (1) is made and copper ring are alternately arranged, and are located at coupling slot on pole shoe and the copper ring and stagger mutually and be 180 ° of arrangements, and the mode by the soldering welding connects into coupled cavity chain with described pole shoe and copper ring.
As further improvement, the described manufacture methods of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2; Described pole shoe thickness d1 is 0.4～0.5 times of traveling wave tube slow-wave system period L; Described copper ring thickness d 2 is 0.2～0.3 times of traveling wave tube slow-wave system period L;
(2) pole shoe in described (2) and the coupling slot of copper ring are processed, made the coupling slot angle of pole shoe greater than the coupling slot angle of described copper ring; Further determine the concrete angle of the coupling slot of pole shoe and copper ring, make the working band of travelling wave tube not be offset;
(3) loading head of pole shoe and copper ring in described (1) is processed, made the loading head thickness d 3 of pole shoe equate with the thickness d 1 of pole shoe and copper ring and the ratio of d2 with the ratio of the loading head thickness d 4 of copper ring;
(4) pole shoe and the copper ring that make in described (3) are alternately arranged, the coupling slot on pole shoe and the copper ring staggers mutually and is 180 ° of arrangements, and the mode of welding by soldering connects into coupled cavity chain with described pole shoe and copper ring.
The invention has the advantages that: described coupled-cavity TWT slow wave structures and preparation method thereof of annotating more, by changing pole shoe and copper ring thickness d 1 and d2, make pole shoe can conduct bigger magnetic field value and the saturated phenomenon in magnetic field does not take place, by changing the thickness d 3 and the d4 of coupling slot angle and pole shoe and copper ring loading head, guaranteed that again coupling impedance and dispersion characteristics do not change simultaneously.Operation is simple and feasible in the present invention, can effectively improve the high-power electronics of annotating coupled-cavity TWT more and annotate percent of pass and job stability.
Description of drawings
Below the content of each width of cloth accompanying drawing expression of specification of the present invention and the mark among the figure are made brief description:
Fig. 1 is the described coupled-cavity TWT slow wave structure schematic diagrames of annotating of background technology part more;
Fig. 2 is a structural representation of annotating the coupled-cavity TWT slow wave structure of the present invention more;
Fig. 3 is described dispersion map when annotating coupled-cavity TWT slow wave structure pole shoe and copper ring thickness d 1 and d2 and equating more;
Fig. 4 is described dispersion map when annotating coupled-cavity TWT slow wave structure pole shoe thickness d1 and increasing more;
Dispersion map when described many notes coupled-cavity TWT slow wave structure pole shoe thickness d1 increases of Fig. 5 and copper ring thickness d 2 reduce;
Mark among the above-mentioned figure is:
1, pole shoe, 2, copper ring.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, design of the present invention, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
As shown in Figure 2, the described coupled-cavity TWT slow wave structures of annotating are made of with the coupled cavity chain that copper ring 2 is connected pole shoe 1 more; Described pole shoe 1 and copper ring 2 are alternately arranged, and being provided with on described pole shoe 1 and copper ring 2 staggers mutually is the coupling slot of 180 ° of arrangements; The thickness d 1 of described pole shoe 1 is greater than the thickness d 2 of described copper ring 2.
Described pole shoe 1 thickness d 1 is 0.4～0.5 times of traveling wave tube slow-wave system period L; Described copper ring 2 thickness d 2 are 0.2～0.3 times of traveling wave tube slow-wave system period L.
Designing the thickness d 1 of described pole shoe 1 greater than the thickness d 2 of described copper ring 2, in fact is exactly the thickness thickening with pole shoe 1, with the reduced thickness of copper ring 2.After the enlarged in thickness of pole shoe 1, pole shoe 1 just can the more magnetic line of force of conducting and the magnetic field saturated phenomenon is not taken place, but iff thickness thickening with pole shoe 1, then the electric capacity in the coupling slot on thicker pole shoe 1 will become big, just mean that also the energy storage in the electric capacity becomes big, because total energy fixes, so the energy storage in the modulation gap that the coupling cavity electronics is annotated must reduce, this has just directly caused reducing of coupling impedance, as shown in Figure 4.So in thickness d 1 thickening, the thickness d 2 of copper ring 2 is reduced with pole shoe 1; Electric capacity in the coupling slot on pole shoe 13 strengthens like this, and energy storage increases; And the electric capacity in the coupling slot 3 on copper ring 2 reduces, and energy storage reduces; Total effect is that the energy storage in the modulation gap that electronics is annotated is constant substantially, and coupling impedance is also constant substantially, as shown in Figure 5.
The coupling slot angle of described pole shoe 1 is greater than the coupling slot angle of described copper ring 2.
In thickness d 1 thickening with pole shoe 1, when the thickness d 2 of copper ring 2 is reduced, if the angle of the coupling slot on pole shoe 1 and the copper ring 2 still is consistent, can cause the changes of annotating the chromatic dispersion of coupled-cavity TWT slow wave structure more, finally cause the working band of travelling wave tube to be offset; In order to make the working band of travelling wave tube not be offset, the angle of the coupling slot on the pole shoe 1 of enlarged in thickness need be strengthened, and the angle of the coupling slot on the copper ring 2 that thickness is reduced reduces.Total effect is to make the dispersion characteristics of many notes coupled-cavity TWT slow wave structure shown in Figure 2 and the described dispersion characteristics of annotating the coupled-cavity TWT slow wave structure of Fig. 1 be consistent substantially more.
The loading head thickness d 3 of described pole shoe 1 is greater than the loading head thickness d 4 of described copper ring 2.
Constant for the chromatic dispersion that keeps described many notes coupled-cavity TWT slow wave structures, the angle of the coupling slot on the pole shoe 1 strengthens, and will inevitably the distribution of the magnetic field magnetic line on the pole shoe 1 be exerted an influence, and has brought harmful transverse magnetic field to a certain extent again.The transverse magnetic field that produces in order to prevent therefore need strengthen the thickness d 3 of the loading head of pole shoe 1, makes the thickness d 4 of loading head of copper ring 2 reduce simultaneously, makes d3: d4=d1: d2.
The described manufacture method of annotating the coupled-cavity TWT slow wave structure comprises following examples more.
Embodiment one
The described manufacture method of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2;
(2) pole shoe that (1) is made and copper ring are alternately arranged, and are located at coupling slot on pole shoe and the copper ring and stagger mutually and be 180 ° of arrangements, and the mode by the soldering welding connects into the coupled cavity chains of annotating with described pole shoe and copper ring more.
Embodiment two
The described manufacture method of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2; Described pole shoe thickness d1 is 0.4 times of traveling wave tube slow-wave system period L, and d1 is 1.2mm; Described copper ring thickness d 2 is 0.3 times of traveling wave tube slow-wave system period L, and d2 is 0.9mm;
(2) pole shoe in described (2) and the coupling slot of copper ring are processed, made the coupling slot angle of pole shoe greater than the coupling slot angle of described copper ring; Coupling slot angle on the described pole shoe is 56 °, and the coupling slot angle on the described copper ring is 52.2 °, makes the working band of travelling wave tube not be offset;
(3) loading head of pole shoe and copper ring in described (1) is processed, made the loading head thickness d 3 of pole shoe equate with the thickness d 1 of pole shoe and copper ring and the ratio of d2 with the ratio of the loading head thickness d 4 of copper ring;
(4) pole shoe and the copper ring that make in described (3) are alternately arranged, the coupling slot on pole shoe and the copper ring staggers mutually and is 180 ° of arrangements, and the mode of welding by soldering connects into coupled cavity chain with described pole shoe and copper ring.
By many notes coupled-cavity TWT slow wave structure that embodiment two makes, its electronics beam passband is 84%, and the efficient of travelling wave tube has reached 20.5%.
Embodiment three
The described manufacture method of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2; Described pole shoe thickness d1 is 0.5 times of traveling wave tube slow-wave system period L, and d1 is 1.5mm; Described copper ring thickness d 2 is 0.2 times of traveling wave tube slow-wave system period L, and d2 is 0.6mm;
(2) pole shoe in described (2) and the coupling slot of copper ring are processed, made the coupling slot angle of pole shoe greater than the coupling slot angle of described copper ring; Coupling slot angle on the described pole shoe is 58 °, and the coupling slot angle on the described copper ring is 50 °, makes the working band of travelling wave tube not be offset;
(3) loading head of pole shoe and copper ring in described (1) is processed, made the loading head thickness d 3 of pole shoe equate with the thickness d 1 of pole shoe and copper ring and the ratio of d2 with the ratio of the loading head thickness d 4 of copper ring;
(4) pole shoe and the copper ring that make in described (3) are alternately arranged, the coupling slot on pole shoe and the copper ring staggers mutually and is 180 ° of arrangements, and the mode of welding by soldering connects into coupled cavity chain with described pole shoe and copper ring.
By many notes coupled-cavity TWT slow wave structure that embodiment three makes, its electronics beam passband is 92%, and the efficient of travelling wave tube has reached 21%.
Embodiment four
The described manufacture method of annotating the coupled-cavity TWT slow wave structure may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2; Described pole shoe thickness d1 is 0.45 times of traveling wave tube slow-wave system period L, and d1 is 1.35mm; Described copper ring thickness d 2 is 0.25 times of traveling wave tube slow-wave system period L, and d2 is 0.75mm;
(2) pole shoe in described (2) and the coupling slot of copper ring are processed, made the coupling slot angle of pole shoe greater than the coupling slot angle of described copper ring; Coupling slot angle on the described pole shoe is 56 °, and the coupling slot angle on the described copper ring is 50 °, makes the working band of travelling wave tube not be offset;
(3) loading head of pole shoe and copper ring in described (1) is processed, made the loading head thickness d 3 of pole shoe equate with the thickness d 1 of pole shoe and copper ring and the ratio of d2 with the ratio of the loading head thickness d 4 of copper ring;
(4) pole shoe and the copper ring that make in described (3) are alternately arranged, the coupling slot on pole shoe and the copper ring staggers mutually and is 180 ° of arrangements, and the mode of welding by soldering connects into coupled cavity chain with described pole shoe and copper ring.
By many notes coupled-cavity TWT slow wave structure that embodiment four makes, its electronics beam passband is 95%, and the efficient of travelling wave tube has reached 23%.
Shown in figure three, when described pole shoe d1 that annotate the coupled-cavity TWT slow wave structures and d2 copper ring consistency of thickness more, its electronics beam passband is 78%, the efficient of travelling wave tube is 19%, by the coupled-cavity TWT slow wave structure that embodiment one to embodiment four makes, the efficient of its electronics beam passband and travelling wave tube effectively improves.
Above the present invention has been carried out exemplary description; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (7)
1. annotate the coupled-cavity TWT slow wave structure one kind, the coupled cavity chain that is connected with copper ring by pole shoe constitutes more; Described pole shoe and copper ring are alternately arranged, and being provided with on described pole shoe and copper ring staggers mutually is the coupling slot of 180 ° of arrangements; It is characterized in that: described pole shoe thickness d1 is greater than described copper ring thickness d 2.
2. according to the described coupled-cavity TWT slow wave systems of annotating of claim 1, it is characterized in that: described pole shoe thickness d1 is 0.4～0.5 times of traveling wave tube slow-wave system period L more; Described copper ring thickness d 2 is 0.2～0.3 times of traveling wave tube slow-wave system period L.
3. according to claim 1 or the 2 described coupled-cavity TWT slow wave systems of annotating, it is characterized in that: the coupling slot angle of described pole shoe is greater than the coupling slot angle of described copper ring more.
4. according to the described coupled-cavity TWT slow wave systems of annotating of claim 3, it is characterized in that: the loading head thickness d 3 of described pole shoe is greater than the loading head thickness d 4 of described copper ring more.
5. according to the described coupled-cavity TWT slow wave systems of annotating of claim 4, it is characterized in that: d3: d4=d1: d2 more.
6. the manufacture methods according to the described many notes coupled-cavity TWT slow wave structures of claim 1 is characterized in that: may further comprise the steps;
(1) makes pole shoe and copper ring, make described pole shoe thickness d1 greater than described copper ring thickness d 2;
(2) pole shoe that (1) is made and copper ring are alternately arranged, and are located at coupling slot on pole shoe and the copper ring and stagger mutually and be 180 ° of arrangements, and the mode by the soldering welding connects into coupled cavity chain with described pole shoe and copper ring.
7. according to the described manufacture methods of annotating the coupled-cavity TWT slow wave structure of claim 6, it is characterized in that: may further comprise the steps more;
(1) makes pole shoe and copper ring, make pole shoe thickness d1 greater than copper ring thickness d 2; Described pole shoe thickness d1 is 0.4～0.5 times of traveling wave tube slow-wave system period L; Described copper ring thickness d 2 is 0.2～0.3 times of traveling wave tube slow-wave system period L;
(2) pole shoe in described (2) and the coupling slot of copper ring are processed, made the coupling slot angle of pole shoe greater than the coupling slot angle of described copper ring; Further determine the concrete angle of the coupling slot of pole shoe and copper ring, make the working band of travelling wave tube not be offset;
(3) loading head of pole shoe and copper ring in described (1) is processed, made the loading head thickness d 3 of pole shoe equate with the thickness d 1 of pole shoe and copper ring and the ratio of d2 with the ratio of the loading head thickness d 4 of copper ring;
(4) pole shoe and the copper ring that make in described (3) are alternately arranged, the coupling slot on pole shoe and the copper ring staggers mutually and is 180 ° of arrangements, and the mode of welding by soldering connects into coupled cavity chain with described pole shoe and copper ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110056745.6A CN102163528B (en) | 2011-03-10 | 2011-03-10 | Multi-beam coupled cavity traveling-wave tube slow-wave structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110056745.6A CN102163528B (en) | 2011-03-10 | 2011-03-10 | Multi-beam coupled cavity traveling-wave tube slow-wave structure and manufacturing method thereof |
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| CN102163528B CN102163528B (en) | 2013-05-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035459A (en) * | 2012-12-11 | 2013-04-10 | 安徽华东光电技术研究所 | Slow wave structure used for traveling wave pipe |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885192A (en) * | 1973-02-16 | 1975-05-20 | English Electric Valve Co Ltd | Fundamental coupled travelling wave tube having a periodic permanent magnetic focussing structure |
| CN200965860Y (en) * | 2006-09-29 | 2007-10-24 | 安徽华东光电技术研究所 | A coupling cavity multi-beam traveling wave tube slow wave structure |
-
2011
- 2011-03-10 CN CN201110056745.6A patent/CN102163528B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885192A (en) * | 1973-02-16 | 1975-05-20 | English Electric Valve Co Ltd | Fundamental coupled travelling wave tube having a periodic permanent magnetic focussing structure |
| CN200965860Y (en) * | 2006-09-29 | 2007-10-24 | 安徽华东光电技术研究所 | A coupling cavity multi-beam traveling wave tube slow wave structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035459A (en) * | 2012-12-11 | 2013-04-10 | 安徽华东光电技术研究所 | Slow wave structure used for traveling wave pipe |
| CN103035459B (en) * | 2012-12-11 | 2016-01-27 | 安徽华东光电技术研究所 | A kind of travelling wave tube slow wave structure |
| 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 |
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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 |