CN208722836U - A kind of slow-wave structure of dielectric support - Google Patents
A kind of slow-wave structure of dielectric support Download PDFInfo
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- CN208722836U CN208722836U CN201821627220.7U CN201821627220U CN208722836U CN 208722836 U CN208722836 U CN 208722836U CN 201821627220 U CN201821627220 U CN 201821627220U CN 208722836 U CN208722836 U CN 208722836U
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Abstract
The utility model discloses a kind of slow-wave structure of dielectric support, by the way that existing meandering metal band is replaced with two groups of in one plane relatively interlaced blades side by side, to constitute the slow-wave structure of dielectric support blade stagger.Between two groups of blades and it is not attached to, such interlaced leaves structure, electromagnetic wave is transmitted by the electromagnetic field couples between interlaced leaves, its operating mode is the mixed mode of TE and TM, electromagnetic field is larger between interlaced leaves, high with the coupled impedance of electronics note interaction in this way, the efficiency for amplifying electromagnetic wave is higher than class helix structure.Meanwhile the mixed mode of TE and TM makes the high-frequency loss of the slow-wave structure of this dielectric support be less than class helix structure, therefore it is operable with high-frequency element.
Description
Technical field
The utility model belongs to microwave electron tube technical field, more specifically, be related to travelling-wave tubes, klystron,
The slow-wave structure of one of the vacuum electron devices such as gyrotron dielectric support.
Background technique
Travelling-wave tubes is the heart of modern military electronics, is indispensable in all kinds of opportunities of combat, naval vessel and satellite system
, there is irreplaceable role.In the current optimal in structure of U.S. army, 270 multiple systems have used nearly 200,000 travelling-wave tubes.
Currently used travelling-wave tubes is helix TWT, and helix TWT is formed using wire coiling.With row
Wave duct develops to high frequency direction, and helix wire is more and more thinner, and coiling spacing is smaller and smaller, the traveling wave tube power turned to
It is greatly lowered.Therefore plane slow-wave structure is used, the planar travelling wave tube of retrofit becomes an important development direction, this
Class travelling-wave tubes has the advantages that small in size, light weight and cost is low etc..
Traditional plane slow-wave structure, such as on 07 15th, 2010 applications, on 06 27th, 2012 Granted publications, notification numbers
For CN101894724B, a kind of entitled " V-type micro-strip meander-line slow wave structure " Chinese invention patent, on October 30th, 2012 Shen
Please, on 04 15th, 2015 Granted publications, notification number CN102956418B, entitled " a kind of Folding frame slow-wave structure ", with
And application on 03 19th, 2013, on 07 15th, 2015 Granted publications, notification number CN103208407B, entitled " one kind
Using the slow-wave device of the wavy micro-strip curve of circular arc body V-arrangement " etc..These meandering metals band high-frequency structure mostly uses medium substrate to make
For support, meandering metal is electroplated on medium substrate and brings realization.In this way meandering metal band slow-wave structure, with
During electronics note carries out interaction, electronics note directly passes through above medium substrate surface, this to focus bad electricity
Son easily stamps medium substrate, due to the non-conductive property of medium substrate, charge is caused to accumulate on medium substrate, as shown in Figure 1,
Negative pressure is consequently formed, not only influences the circulation of electronics note, and influence the working performance of travelling-wave tubes, can be led under serious situation
Travelling-wave tubes is caused to be destroyed and can not work.
The Granted publication of on May 29th, 2018, Authorization Notice No. CN106340433B, entitled " a kind of medium is embedding
The meandering metal entered is with high-frequency structure " dielectric support slow-wave structure in, using a dielectric support bar and a meandering metal band,
The dielectric support bar is periodically bent and is formed, and curved lower surfaces are fixed on metal shielding inner bottom surface；Institute
Meandering metal band is stated to be made of the metal layer for being nested in dielectric support rod bending upper surface.By by the medium of micro-strip high-frequency structure
Substrate replacement is the dielectric support bar for having the identical change period with meandering metal band, while the insertion of dielectric support bar part is tortuous
Metal tape, to form a kind of meandering metal band high-frequency structure of embedding medium.After medium substrate is replaced with dielectric support bar,
Medium is greatly decreased, so that medium substantially reduces towards the exposed area that electronics is infused, and dielectric support bar part is embedded into complications
In metal tape, the exposed area of medium is further reduced, to reduce electron bombardment to the probability of medium substrate, avoids electricity
The generation of lotus cumulative effect.However, being hindered when meandering metal band high-frequency structure is used for slow-wave structure with the coupling of electronics note interaction
It is anti-not get a promotion, meanwhile, high-frequency loss is larger, can not work in high-frequency element.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, propose a kind of slow-wave structure of dielectric support, with
The coupled impedance with electronics note interaction is improved, and reduces high-frequency loss, high-frequency element can be worked in.
To realize above-mentioned purpose of utility model, the slow-wave structure of the utility model dielectric support, comprising:
Dielectric support bar；
It is characterized by further comprising:
Two groups of blades, two groups of blades are in one plane relatively interlaced side by side, between two groups of blades and are not attached to, respectively
From being connected, one group of connection input structure, another group of connection export structure；
The blade is made of sheet metal, and blade shape can be triangle, trapezoidal or rectangle；
Electromagnetic wave is input to one group of blade being attached thereto by input structure, is made by the electromagnetic field couples between interlaced leaves
With by electromagnetic transmission to another group of blade, export structure is then output to by another group of blade；
The dielectric support bar is located at the lower section of two groups of blades, plays a part of to support and radiate, electronics is infused staggered two
It is run above or below group blade and interlaced leaves interaction, generation electromagnetic wave amplifies.
What the purpose of this utility model was realized in.
The slow-wave structure of the utility model dielectric support is put down by the way that existing meandering metal band is replaced with two groups at one
Blade relatively interlaced side by side on face, to constitute the slow-wave structure of dielectric support blade stagger.Between two groups of blades simultaneously
It is not attached to, such interlaced leaves structure, transmits electromagnetic wave, operating mode TE by the electromagnetic field couples between interlaced leaves
With the mixed mode of TM, electromagnetic field is larger between interlaced leaves, high with the coupled impedance of electronics note interaction in this way, amplifies electromagnetic wave
Efficiency be higher than class helix structure.Meanwhile the mixed mode of TE and TM damages the high frequency of the slow-wave structure of this dielectric support
Consumption is less than class helix structure, therefore is operable with high-frequency element.
Detailed description of the invention
Fig. 1 is a kind of structure chart of specific embodiment of slow-wave structure of the utility model dielectric support；
Fig. 2 is the structure chart of the slow-wave structure another kind specific embodiment of the utility model dielectric support.
Specific embodiment
Specific embodiment of the present utility model is described with reference to the accompanying drawing, more so as to those skilled in the art
Understand the utility model well.It is detailed when known function and design requiring particular attention is that in the following description
Perhaps, when description can desalinate the main contents of the utility model, these descriptions will be ignored herein.
Fig. 1 is a kind of structure chart of specific embodiment of slow-wave structure of the utility model dielectric support.
In the present embodiment, as shown in Figure 1, the slow-wave structure of the utility model dielectric support include dielectric support bar 2 with
And two groups of blades 3,4.Two groups of blades 3,4 are in one plane relatively interlaced side by side, 3,4 not phases between two groups of blades
Even, it is respectively connected, one group of blade 3 connects input structure 1, and another group of blade 4 connects export structure 5.
Two groups of blades 3,4 are made of sheet metal, in the present embodiment, as shown in Figure 1, blade 3,4 shapes are rectangle.
Electromagnetic wave is input to be attached thereto one group of blade 3 by input structure 1, passes through the electromagnetic field couples between interlaced leaves
Then electromagnetic transmission to another group of blade 4 is output to export structure 5 by another group of blade 4 by effect.
The dielectric support bar 2 is located at the lower section of two groups of blades 3,4, plays a part of to support and radiate, and electronics note (is not drawn
Place) it is run above or below staggered two groups of blades 3,4 and interlaced leaves interaction, generate electromagnetic wave amplification.
In the present embodiment, the dielectric support bar 2 supports rectangle to interlock leaf using the trapezoidal diamond supports bar of double joint
Chip architecture (interlaced by two groups of blades 3,4 and constitute), diamond thickness 0.2mm, wide 1.2mm, length are respectively 8mm-12mm.
Two groups of blades 3,4 are made for copper foil, and it is highly 3.4mm that the rectangle width of blade, which is 0.6mm,.On each dielectric support bar 2
There are 15 blades, blade is indenting, and the blade on each group (side) all links together i.e. from being connected, then by arc
Input structure 1, export structure 5 carry out input and output.
Fig. 2 is the structure chart of the slow-wave structure another kind specific embodiment of the utility model dielectric support.
In the present embodiment, as shown in Fig. 2, its structure is identical as structure shown in FIG. 1, only blade 3,4 shapes are three
It is angular, triangle base width 0.6, height 3mm.
The triangle that the dielectric support bar 2 is supported using double boron nitride rectangular support bars interlaced leaves structure (by
Two groups of blades 3,4 are interlaced and constitute).The dielectric support bar 2 is the rectangle of 7mm*1mm*0.15mm, and blade is triangle
Shape.
For planar travelling wave tube, the utility model proposes a kind of dielectric support interlaced leaves slow-wave structures, i.e., using Jie
Matter they sup-port interlaced leaves constitute slow-wave structure, and interlaced leaves are that sheet metal is constituted, blade in one plane phase side by side
To interlaced, it is divided into two groups, two groups are respectively connected, and between two groups and are not attached to, respectively connect input/output structure.This
Sample electromagnetic wave is by wherein one group of input, by the coupling of interlaced leaves by electromagnetic transmission to another group, then another group
Output.The blade shape can be triangle, trapezoidal or rectangle.Dielectric support bar is located at the lower section of interlaced leaves, rise support and
The effect of heat dissipation, electronics note is run above or below interlaced leaves and interlaced leaves interaction, generates electromagnetic wave amplification.
Compared with currently used helical line slow-wave structure, have many unique advantages: 1) plane slow-wave structure is more
The processing method fine suitable for photoetching, laser etc., machining accuracy is high, and helical line slow-wave structure is formed by filament coiling,
The fineness of silk and the precision of coiling all can not be with plane machining structure phase analogies.Such as, helix winding precision about 0.1mm, and swash
Light machining accuracy about 5um, lithography process precision are up to tens nanometer；2) due to be between support rod and interlaced leaves welding and
At so strong compared to the crimping heat-sinking capability of helix；3) blade construction is also able to bear more electronics than filamentary structure
Bombardment；4) the interlaced leaves slow-wave structure of plane can be infused using cylindric electronics or infuse work using ribbon-like electron,
When using ribbon-like electron note work, with electric current is big, power is high, the advantage of high gain.And helical line slow-wave structure can only be adopted
Work is infused with cylindric electronics.
Compared with current plane slow-wave structure: 1) common plane slow-wave structure planarizes and shape similar to helix mostly
At such as U-shaped microstrip line, V-type microstrip line, angle log spiral etc., the electromagnetic wave of class helix structure is class TEM wave.Staggeredly
Blade construction uses electromagnetic field couples between blade to transmit electromagnetic wave, and operating mode is the mixed mode of TE and TM, electricity between blade
Magnetic field is larger, and when being used for slow-wave structure and the coupled impedance of electronics note interaction is high, and the efficiency for amplifying electromagnetic wave is higher than class spiral shell
Spiral line structure.2) class helix structure is not resistant to electron bombardment as helix, and due to the electricity of class helix structure
Magnetic wave is class TEM wave, and high-frequency loss is much larger than the mixed mode of TE and TM, so high-frequency element can not be worked in.
Although the illustrative specific embodiment of the utility model is described above, in order to the art
Technical staff understands the utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to this technology
For the those of ordinary skill in field, as long as various change is in the essence of the utility model that the attached claims limit and determine
In mind and range, these variations are it will be apparent that all utilize the innovation and creation of the utility model design in the column of protection.
Claims (4)
1. a kind of slow-wave structure of dielectric support, comprising:
Dielectric support bar；
It is characterized by further comprising:
Two groups of blades, two groups of blades are in one plane relatively interlaced side by side, between two groups of blades and are not attached to, respectively connect
Integrally, one group of connection input structure, another group of connection export structure；
The blade is made of sheet metal, and blade shape is triangle, trapezoidal or rectangle；
Electromagnetic wave is input to one group of blade being attached thereto by input structure, and being acted on by the electromagnetic field couples between interlaced leaves will
Then electromagnetic transmission is output to export structure by another group of blade to another group of blade；
The dielectric support bar is located at the lower section of two groups of blades, plays a part of to support and radiate, electronics is infused in staggered two groups of leaves
It is run above or below piece and interlaced leaves interaction, generation electromagnetic wave amplifies.
2. slow-wave structure according to claim 1, which is characterized in that the dielectric support bar is the trapezoidal diamond branch of double joint
Strut.
3. slow-wave structure according to claim 1, which is characterized in that the dielectric support bar is double boron nitride rectangular supports
Bar.
4. slow-wave structure according to claim 1, which is characterized in that the input structure, export structure are arcuate structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821627220.7U CN208722836U (en) | 2018-10-08 | 2018-10-08 | A kind of slow-wave structure of dielectric support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821627220.7U CN208722836U (en) | 2018-10-08 | 2018-10-08 | A kind of slow-wave structure of dielectric support |
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| CN208722836U true CN208722836U (en) | 2019-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300753A (en) * | 2018-10-08 | 2019-02-01 | 电子科技大学 | A kind of slow-wave structure of dielectric support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300753A (en) * | 2018-10-08 | 2019-02-01 | 电子科技大学 | A kind of slow-wave structure of dielectric support |
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Granted publication date: 20190409 Termination date: 20201008 |