CN106159399A - A kind of novel winding waveguide - Google Patents
A kind of novel winding waveguide Download PDFInfo
- Publication number
- CN106159399A CN106159399A CN201610729647.7A CN201610729647A CN106159399A CN 106159399 A CN106159399 A CN 106159399A CN 201610729647 A CN201610729647 A CN 201610729647A CN 106159399 A CN106159399 A CN 106159399A
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- Prior art keywords
- waveguide
- winding waveguide
- straight wave
- wave guide
- size
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/10—Wire waveguides, i.e. with a single solid longitudinal conductor
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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
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/24—Slow-wave structures, e.g. delay systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
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- Waveguides (AREA)
Abstract
The invention discloses a kind of novel winding waveguide, belong to microwave vacuum technical field of electronic devices.The present invention, on the basis of tradition winding waveguide, by adding Meta Materials thin slice in its circular arc curved waveguide center, reduces straight wave guide size so that this winding waveguide increases coupled impedance while increasing slow-wave structure size simultaneously.The novel winding waveguide of one that the present invention proposes, increases 1.2 times than common winding waveguide size, and the processing to winding waveguide is provided convenience, and also makes electron beam channel strengthen, and increases interaction efficiency and output.And by reducing straight wave guide length and width size so that its coupled impedance is higher, and the coupled impedance of common winding waveguide only has 5 ohm, and this structure can reach 8 ohm.
Description
Technical field
The invention belongs to microwave vacuum technical field of electronic devices, be specifically related to a kind of novel zigzag waves adding Meta Materials
Lead.
Background technology
Travelling-wave tube is one of microwave, the most widely used electron tube of millimeter wave frequency band, winding waveguide have high power,
The advantage such as broadband, high-gain.In High-Power Microwave field, it can be as the input stage of cyclotron wave amplifying device.Slow wave system
System is as the core component of Beam and wave interaction in travelling-wave tube, and its performance directly determines the technical merit of travelling-wave tube.
Traditional helix and coupled cavity structure each encounter serious obstacle.Although helix TWT has again
Bandwidth more than sound interval, but its thermal capacity is little, though heat-sinking capability is low and cannot provide bigger output. coupled-cavity TWT
So there is the power level of an order of magnitude higher than helix, but narrow bandwidth, typically about 10%.At millimere-wave band, spiral
Shape and coupled-cavity TWT are small-sized, and processing, assembly precision require height, and yield rate low cost is high, increase development further
Difficulty.Therefore, searching can be operated in millimere-wave band, the novel travelling-wave tube slow-wave structure of function admirable just seems the most necessary
?.Winding waveguide, is a class novel all-metal slow wave line, and this slow wave line is while realizing high power capacity, existing good
Bandwidth performance, and mechanical strength is high, thermal diffusivity is good, power capacity is big and input and output coupled structure is relatively easy etc. excellent
Point.In fields such as bandwidth millimeter wave communications, there is good application prospect.But, it is back ripple owing to winding waveguide belongs to first-harmonic
System, be operated on negative one time space harmonics, therefore coupled impedance is low, and coupled impedance is as characterizing slow wave system and electronics
Interact strong and weak parameter, and gain and efficiency with travelling-wave tube are directly related.Owing to the coupled impedance of winding waveguide reduces, make
Obtain the overall gain of travelling-wave tube and efficiency is limited.And traditional winding waveguide is on millimeter wave and Terahertz frequency range, slowly
The size of wave structure is the least, and undersized slow-wave structure limits electron beam channel radius and electric current, can reduce slow wave system
Gain and output.Therefore, size can be increased and coupled impedance does not the most reduce the slow-wave structure of bandwidth and goes out in the urgent need to having
Existing.At " Metamaterial-Enhanced Traveling Wave Tubes " (Vacuum Electronics
Conference, IEEE International, 199-200 page, author: Arash Rashidi and Nader Behdad)
(as shown in Figure 1) have studied the high frequency characteristics of the winding waveguide slow-wave structure adding Meta Materials in a literary composition, winding waveguide by one is
Row circular arc curved waveguide and straight wave guide head and the tail are formed by connecting winding waveguide structure；Head and the tail at circular arc curved waveguide are formed by connecting,
The center of circular arc curved waveguide is provided with certain thickness fan-shaped metamaterial layer；Formed symmetrical line in winding waveguide structure
Manhole is had with the point of intersection of straight wave guide wall；Then lead to with circle between two through holes of all adjacent straight wave guide walls
The metal tube that hole aperture size is identical connects, and forms electron beam channel.Owing to adding fan-shaped metamaterial layer, this winding waveguide
Normalization phase velocity can move toward high frequency direction, therefore can increase the size of winding waveguide；But the coupled impedance of this winding waveguide
Relatively low, fan-shaped metamaterial layer is difficult to processing, and it is necessary that therefore design one Novel meta-material improves coupled impedance further.
Summary of the invention
The present invention is on the basis of tradition winding waveguide, thin by adding Meta Materials in its circular arc curved waveguide center
Sheet, reduces straight wave guide size simultaneously so that this winding waveguide increases coupled impedance while increasing slow-wave structure size.
For achieving the above object, the novel winding waveguide of the one of the present invention by a series of circular arc curved waveguide with straight
Waveguide head and the tail are formed by connecting, and have manhole, adjacent two straight wave guides in the position of the formed symmetrical line of straight wave guide broadside
Manhole between, use the metal tube identical with manhole aperture size be connected, formation electron beam channel.
The center of described circular arc curved waveguide is provided with a Meta Materials thin slice, and this thin slice is rectangular tab, and thickness is
S1, meets 0.14mm < s1 < 0.3mm.
The length and width of described straight wave guide is respectively less than circular arc curved waveguide.
The novel winding waveguide of one that the present invention proposes, increases 1.2 times than common winding waveguide size, to winding waveguide
Processing is provided convenience, and also makes electron beam channel strengthen, and increases interaction efficiency and output.And by reducing straight wave guide
Length and width size so that its coupled impedance is higher, the coupled impedance of common winding waveguide only has 5 ohm, and this structure can reach
8 ohm.
Accompanying drawing explanation
Fig. 1 is background technology structural representation；
Fig. 2 (a) is the inner space schematic diagram of present example, and Fig. 2 (b) is the structural representation of the embodiment of the present invention；
Fig. 3 (a) is the dispersion characteristics comparison diagram of the embodiment of the present invention and background technology, Fig. 3 (b) be the embodiment of the present invention with
The back of the body
The coupled impedance comparison diagram of scape technology.
Drawing reference numeral illustrates: 1 is circular arc curved waveguide, and 2 is straight wave guide, and 3 is electron beam channel, and 4 is Meta Materials thin slice.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention
It is further elaborated.Should be appreciated that specific embodiment described herein, only for explaining the present invention, is not used to limit
Determine the present invention.
The embodiment of the present invention is as in figure 2 it is shown, be formed by connecting, directly with straight wave guide head and the tail by a series of circular arc curved waveguide
The position of the formed symmetrical line of waveguide broadside has manhole, between the manhole of adjacent two straight wave guides, use with
The metal tube that manhole aperture size is identical is connected, and forms electron beam channel.
The center of circular arc curved waveguide is provided with a rectangle Meta Materials thin slice, and its thickness is S1=0.2mm, and dielectric is normal
Number ε=-3, the new material of magnetic permeability μ=-4.Adding Meta Materials thin slice makes the size of winding waveguide increase, and well solves
Undersized slow-wave structure limits electron beam channel radius and electric current, causes gain and the output reducing slow wave system
A difficult problem, size increase simultaneously also can more easily be processed.Compared to the sector design of background technology, rectangle of the present invention
Thin slice is more readily processed, and saves production cost.
The dimensional parameters of winding waveguide of the present invention as in figure 2 it is shown, circular arc curved waveguide is semi-circular curvature waveguide, its outer half
Footpath r1=1.46mm, inside radius r2=0.06mm, width edge length width=6.59mm, narrow edge lengths b=1.1mm；Straight wave guide
Width edge length a1=6.2mm, narrow edge lengths b1=0.6mm, highly H=1.2mm, electron beam channel radius R=0.45mm.
Novel winding waveguide is tested, obtains its dispersion characteristics and coupled impedance, and enter with the result of background technology
Row compares, as shown in Figure 3.It can be seen that at Ka wave band, present example has the normalization phase velocity lower than background technology,
Curve ratio background technology is more smooth, can increase frequency band range, and wants in the coupled impedance of 29-31GHz wave band present example
Higher than the coupled impedance of background technology 3 ohm.
The result explanation of Fig. 3 by reducing the long limit of straight wave guide and broadside, can improve winding waveguide operating frequency and
Coupled impedance, adds Meta Materials thin slice and can increase the dimensional parameters of winding waveguide.
Although detailed description of the invention illustrative to the present invention is described above, in order to the technology of the art
Personnel understand the present invention, but more it should be clear that the invention is not restricted to the scope of detailed description of the invention, common to the art
From the point of view of technical staff, as long as various change limits and in the spirit and scope of the present invention that determine in appended claim, this
A little changes are apparent from, and all utilize the innovation and creation of present inventive concept all at the row of protection.
Claims (3)
1. a novel winding waveguide, is formed by connecting, at straight wave guide width with straight wave guide head and the tail by a series of circular arc curved waveguide
The position of the formed symmetrical line on limit has manhole, between the manhole of adjacent two straight wave guides, uses and leads to circle
The metal tube that hole aperture size is identical is connected, and forms electron beam channel, it is characterised in that: the center of described circular arc curved waveguide
Position is provided with a rectangle Meta Materials thin slice.
A kind of novel winding waveguide the most as claimed in claim 1, it is characterised in that: described rectangle Meta Materials sheet thickness is
S1, meets 0.14mm < s1 < 0.3mm.
A kind of novel winding waveguide the most as claimed in claim 1, it is characterised in that: the length and width of described straight wave guide is respectively less than circle
Arc curved waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729647.7A CN106159399A (en) | 2016-08-26 | 2016-08-26 | A kind of novel winding waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729647.7A CN106159399A (en) | 2016-08-26 | 2016-08-26 | A kind of novel winding waveguide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106159399A true CN106159399A (en) | 2016-11-23 |
Family
ID=57342935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610729647.7A Pending CN106159399A (en) | 2016-08-26 | 2016-08-26 | A kind of novel winding waveguide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106159399A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221384A (en) * | 2019-06-17 | 2019-09-10 | 华中科技大学 | A kind of silicon substrate Meta Materials multimode curved waveguide and preparation method thereof |
Citations (7)
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|---|---|---|---|---|
| CN101615553A (en) * | 2009-07-22 | 2009-12-30 | 电子科技大学 | A kind of rectangular-grooved loading winding waveguide slow wave line |
| CN201465983U (en) * | 2009-07-22 | 2010-05-12 | 电子科技大学 | Curved groove loading meandering waveguide slow-wave line |
| CN102593563A (en) * | 2012-02-29 | 2012-07-18 | 深圳光启创新技术有限公司 | Waveguide device based on metamaterial |
| US20130051724A1 (en) * | 2011-08-23 | 2013-02-28 | Samsung Electronics Co., Ltd. | Terahertz interaction circuit |
| CN103854939A (en) * | 2014-01-10 | 2014-06-11 | 中国电子科技集团公司第十二研究所 | Arc-shaped curve boundary folding waveguide slow wave structure |
| CN104576266A (en) * | 2014-12-29 | 2015-04-29 | 中国电子科技集团公司第十二研究所 | One-side folded waveguide slow wave structure for backward wave oscillator |
| US20150256139A1 (en) * | 2014-03-10 | 2015-09-10 | Wisconsin Alumni Research Foundation | Epsilon negative loaded traveling wave tube |
-
2016
- 2016-08-26 CN CN201610729647.7A patent/CN106159399A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615553A (en) * | 2009-07-22 | 2009-12-30 | 电子科技大学 | A kind of rectangular-grooved loading winding waveguide slow wave line |
| CN201465983U (en) * | 2009-07-22 | 2010-05-12 | 电子科技大学 | Curved groove loading meandering waveguide slow-wave line |
| US20130051724A1 (en) * | 2011-08-23 | 2013-02-28 | Samsung Electronics Co., Ltd. | Terahertz interaction circuit |
| CN102593563A (en) * | 2012-02-29 | 2012-07-18 | 深圳光启创新技术有限公司 | Waveguide device based on metamaterial |
| CN103854939A (en) * | 2014-01-10 | 2014-06-11 | 中国电子科技集团公司第十二研究所 | Arc-shaped curve boundary folding waveguide slow wave structure |
| US20150256139A1 (en) * | 2014-03-10 | 2015-09-10 | Wisconsin Alumni Research Foundation | Epsilon negative loaded traveling wave tube |
| CN104576266A (en) * | 2014-12-29 | 2015-04-29 | 中国电子科技集团公司第十二研究所 | One-side folded waveguide slow wave structure for backward wave oscillator |
Non-Patent Citations (1)
| Title |
|---|
| Y. S. TAN等: "Wave energy amplification in a metamaterial based traveling-wave structure", 《EPL(EUROPHYSICCS LETTERS)》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221384A (en) * | 2019-06-17 | 2019-09-10 | 华中科技大学 | A kind of silicon substrate Meta Materials multimode curved waveguide and preparation method thereof |
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Application publication date: 20161123 |
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