CN103050355B - A kind of slow wave structure for travelling wave tube - Google Patents
A kind of slow wave structure for travelling wave tube Download PDFInfo
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- CN103050355B CN103050355B CN201210566350.5A CN201210566350A CN103050355B CN 103050355 B CN103050355 B CN 103050355B CN 201210566350 A CN201210566350 A CN 201210566350A CN 103050355 B CN103050355 B CN 103050355B
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Abstract
The invention discloses a kind of slow wave structure for travelling wave tube, comprise several equally distributed central dividing plates (1) in the axial direction, the center of central dividing plate (1) is provided with the centre bore (3) holding Metallic rod (2), Metallic rod (2) is arranged in this centre bore (3), central dividing plate (1) is gone up and is positioned at the monosymmetric of centre bore (3) and is provided with two electron beam channel holes (4), and the surrounding of central dividing plate (1) is respectively equipped with upper cover plate (5), lower shoe (6), left plate (7) and right plate (8).This kind of slow wave structure adopts folded waveguide as main structure, by putting into Metallic rod in center, radio-frequency field TM11 pattern is disappeared, TM21 mould becomes basement membrane, in same operating frequency, because slow wave structure size increases, travelling wave tube power capacity is increased, all can adopt in the following frequency range of 3mm wave band, cold belt is wide reaches 30%-40%, and Warm bandwidth can reach 10%-15%.
Description
Technical field
The present invention relates to microwave vacuum devices field, especially relate to a kind of slow wave structure for travelling wave tube.
Background technology
In microwave vacuum devices field, travelling wave tube is most widely used device.Travelling wave tube, since birth, has extensively adopted two kinds of slow wave systems, i.e. helical line slow-wave structure and Hughes's type Coupled-Cavity Slow Wave.Helical line slow-wave structure has the wide feature of band, but power capacity is little, is applicable to broadband medium power and low power tranvelling wave tube.Hughes's type Coupled-Cavity Slow Wave has the advantage of high power capacity, but bandwidth is narrower, generally below 10%.Along with the increase of travelling wave tube power, find than the Hughes slow wave structure slow wave structure that more high power capacity, bandwidth are wider is the target that researcher studies always.
Summary of the invention
Technical problem to be solved by this invention provides a kind of slow wave structure for travelling wave tube for problems of the prior art, its objective is that this kind is wider for the slow wave structure bandwidth of travelling wave tube, radiating condition is better, and radio-frequency field is even, periodic magnetic field can be adopted to focus on, and radial magnetic field is little.
To be this kind comprise several equally distributed central dividing plates in the axial direction for the slow wave structure of travelling wave tube to technical scheme of the present invention, the center of described central dividing plate is provided with the centre bore holding Metallic rod, Metallic rod is arranged in this centre bore, central dividing plate is positioned at the monosymmetric of centre bore and is provided with two electron beam channel holes, and the surrounding of described central dividing plate is respectively equipped with upper cover plate, lower shoe, left plate and right plate.
Two adjacent central dividing plates are staggered on upper cover plate, lower shoe.
Described slow wave structure is all-metal construction.
When described slow wave structure be used for high power travelling wave tube time, Metallic rod is hollow stem, and Metallic rod hollow in pass into improve slow wave structure heat radiation cooling liquid.
This kind with said structure has the following advantages for the slow wave structure of travelling wave tube:
1. this kind adopts folded waveguide as main structure for the slow wave structure of travelling wave tube, by putting into Metallic rod in center, radio-frequency field TM11 pattern is disappeared, and TM21 mould becomes basic mode, in same operating frequency, because slow wave structure size increases, travelling wave tube power capacity is increased, generally can double above, be suitable for band limits wide, all can adopt in the following frequency range of 3mm wave band, cold belt is wide can reach 30%-40%, and Warm bandwidth can reach 10%-15%.
2. this kind uses independently electron beam and the mutual effect of TM21 mould of two notes for the slow wave structure travelling wave tube of travelling wave tube, and this structure also can as the high-frequency structure of backward wave tube.
3. this kind is all-metal construction for the slow wave structure travelling-wave tube slow-wave structure of travelling wave tube, and radiating condition is good, is particularly suitable as high power travelling wave tube slow wave structure; When designing high-power travelling wave tube uses, central metal bar can use hollow stem, and centre bore leads to liquid cools, improves the heat radiation of slow wave structure, improves travelling wave tube power output.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional structure schematic diagram in the direction of structure A-A shown in Fig. 1.
Fig. 3 is the structural representation of central dividing plate in the present invention.
Fig. 4 is the vertical view of structure shown in Fig. 3.
Fig. 5 is the structural representation of Metallic rod in the present invention.
In figs. 1-5,1: central dividing plate; 2: Metallic rod; 3: centre bore; 4: electron beam channel; 5: upper cover plate; 6: lower shoe; 7: left plate; 8: right plate.
In " TM11 mould ", " TM " represents to only have longitudinal electric field, does not walk crosswise electric field; First " 1 " represents that X-axis has 1 half-wave distribution; Second " 1 " represents that Y-axis has 1 half-wave distribution.
In " TM21 mould ", " TM " represents to only have longitudinal electric field, does not walk crosswise electric field; " 2 " represent that X-axis has 2 half-wave distributions; " 1 " represents that Y-axis has 1 half-wave distribution.
Embodiment
Combined from structure shown in Fig. 1-5, this kind comprises several equally distributed central dividing plates 1 in the axial direction for the slow wave structure of travelling wave tube, the center of central dividing plate 1 is provided with the centre bore 3 holding Metallic rod 2, Metallic rod 2 is arranged in this centre bore 3, central dividing plate 1 is positioned at the monosymmetric of centre bore 3 and is provided with two electron beam channel holes 4, the surrounding of central dividing plate 1 is respectively equipped with upper cover plate 5, lower shoe 6, left plate 7 and right plate 8, and two adjacent central dividing plates 1 are staggered on upper cover plate 5, lower shoe 6.Adopt folded waveguide as main structure, by putting into Metallic rod in center, radio-frequency field TM11 pattern is disappeared, TM21 mould becomes basement membrane, in same operating frequency, because slow wave structure size increases, travelling wave tube power capacity is increased, generally can double above, cold belt is wide can reach 30%-40%, and Warm bandwidth can reach 10%-15%.
Slow wave structure is all-metal construction, and radiating condition is good, is particularly suitable as high power travelling wave tube slow wave structure; When designing high-power travelling wave tube uses, central metal bar 2 can use hollow stem, and centre bore leads to liquid cools, improves the heat radiation of slow wave structure, improves travelling wave tube power output.
When life cycle magnetic field focuses on, compared with traditional Hughes's slow wave structure, the magnetic field structure of generation is even, and radial magnetic field is little, identical physical dimension, and the magnetic field of generation is large, and pole shoe is not easily saturated.
This kind adopts folded waveguide as main structure for the slow wave structure of travelling wave tube, by putting into Metallic rod in center, radio-frequency field TM11 pattern is disappeared, and TM21 mould becomes basement membrane, in same operating frequency, because slow wave structure size increases, travelling wave tube power capacity is increased, generally can double above, be suitable for band limits wide, all can adopt in the following frequency range of 3mm wave band, cold belt is wide can reach 30%-40%, and Warm bandwidth can reach 10%-15%.
Claims (4)
1. the slow wave structure for travelling wave tube, it is characterized in that: described slow wave structure comprises several equally distributed central dividing plates (1) in the axial direction, the center of described central dividing plate (1) is provided with the centre bore (3) holding Metallic rod (2), Metallic rod (2) is arranged in this centre bore (3), central dividing plate (1) is gone up and is positioned at the monosymmetric of centre bore (3) and is provided with two electron beam channel holes (4), the surrounding of described central dividing plate (1) is respectively equipped with upper cover plate (5), lower shoe (6), left plate (7) and right plate (8).
2. a kind of slow wave structure for travelling wave tube according to claim 1, is characterized in that: two adjacent central dividing plates (1) are staggered on upper cover plate (5), lower shoe (6).
3. a kind of slow wave structure for travelling wave tube according to claim 1 and 2, is characterized in that: described slow wave structure is all-metal construction.
4. a kind of slow wave structure for travelling wave tube according to claim 3, it is characterized in that: when described slow wave structure is used for high power travelling wave tube, Metallic rod (2) is hollow stem, and Metallic rod (2) hollow in pass into improve slow wave structure heat radiation cooling liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210566350.5A CN103050355B (en) | 2012-12-24 | 2012-12-24 | A kind of slow wave structure for travelling wave tube |
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| CN201210566350.5A CN103050355B (en) | 2012-12-24 | 2012-12-24 | A kind of slow wave structure for travelling wave tube |
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| CN103050355A CN103050355A (en) | 2013-04-17 |
| CN103050355B true CN103050355B (en) | 2015-08-26 |
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| CN201210566350.5A Active CN103050355B (en) | 2012-12-24 | 2012-12-24 | A kind of slow wave structure for travelling wave tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780724A (en) * | 2016-03-10 | 2018-11-09 | Nec网络传感器系统株式会社 | Slow wave circuit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779153B (en) * | 2014-01-17 | 2016-03-23 | 中国科学院电子学研究所 | Periodic perperiodic permanent magnet focusing structure and load module thereof |
| CN110473755B (en) * | 2019-09-11 | 2020-05-22 | 电子科技大学 | Ring rod strip line slow wave structure clamped at two sides |
| CN115083867B (en) * | 2022-08-11 | 2024-09-17 | 电子科技大学 | Slow wave structure suitable for traveling wave amplifier and traveling wave tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004055241A (en) * | 2002-07-18 | 2004-02-19 | New Japan Radio Co Ltd | Cavity connection type travelling-wave tube |
| RU2004106069A (en) * | 2004-03-01 | 2005-08-10 | Федеральное государственное унитарное предпри тие "Научно-производственное предпри тие "Исток" (ФГУП "НПП "Исток") (RU) | TRAVELING WAVE LAMP SYSTEM |
| CN101840834A (en) * | 2010-03-05 | 2010-09-22 | 电子科技大学 | Trapezoidal slow wave lines of coupling slot for traveling wave tube |
| CN102522299A (en) * | 2011-12-28 | 2012-06-27 | 东南大学 | Electromagnetic band gap structure, electromagnetic band gap high-impedance substrate and planar travelling wave tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020158806A1 (en) * | 2001-04-10 | 2002-10-31 | Caimi Frank M. | Broadband antenna structures |
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2012
- 2012-12-24 CN CN201210566350.5A patent/CN103050355B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004055241A (en) * | 2002-07-18 | 2004-02-19 | New Japan Radio Co Ltd | Cavity connection type travelling-wave tube |
| RU2004106069A (en) * | 2004-03-01 | 2005-08-10 | Федеральное государственное унитарное предпри тие "Научно-производственное предпри тие "Исток" (ФГУП "НПП "Исток") (RU) | TRAVELING WAVE LAMP SYSTEM |
| CN101840834A (en) * | 2010-03-05 | 2010-09-22 | 电子科技大学 | Trapezoidal slow wave lines of coupling slot for traveling wave tube |
| CN102522299A (en) * | 2011-12-28 | 2012-06-27 | 东南大学 | Electromagnetic band gap structure, electromagnetic band gap high-impedance substrate and planar travelling wave tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780724A (en) * | 2016-03-10 | 2018-11-09 | Nec网络传感器系统株式会社 | Slow wave circuit |
| DE112017001223B4 (en) | 2016-03-10 | 2024-02-01 | Nec Network And Sensor Systems, Ltd. | Delay circuit |
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| CN103050355A (en) | 2013-04-17 |
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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 |