CN206505886U - A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes - Google Patents
A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes Download PDFInfo
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- CN206505886U CN206505886U CN201720242532.5U CN201720242532U CN206505886U CN 206505886 U CN206505886 U CN 206505886U CN 201720242532 U CN201720242532 U CN 201720242532U CN 206505886 U CN206505886 U CN 206505886U
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- travelling
- microstrip line
- wave tubes
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Abstract
The utility model discloses a kind of travelling-wave tubes right angle delivery of energy structure based on microstrip line, the right angle delivery of energy structure includes：Coaxial window including inner wire, dielectric disk in window and outer conductor and the microstrip line including medium substrate and the conductor formed in medium substrate；The conductor of the microstrip line is located at one end outside travelling-wave tubes perpendicular to the inner wire and inner wire and electrically connected；One end that the inner wire is located in travelling-wave tubes is electrically connected with helix, the utility model also discloses a kind of travelling-wave tubes with the right angle delivery of energy structure, the utility model realizes the energy on surface input or throwout spiral close to travelling-wave tubes by using the right angle delivery of energy structure based on microstrip line, reduce the height of travelling-wave tubes delivery of energy structure, so as to reduce the radial dimension of travelling-wave tubes, it is easy to travelling-wave tubes to be applied in phased array antenna system.
Description
Technical field
The utility model is related to vacuum electron device field.More particularly, to a kind of right angle delivery of energy based on microstrip line
Structure, travelling-wave tubes.
Background technology
Militarily, as the demand that higher precision detection is realized to more distant object is highlighted further, for being used as thunder
Reach, communicate, the front power of the AESA system of electronic information equipment such as electronic countermeasure, efficiency suffer from it is higher will
Ask, the vacuum device using travelling-wave tubes as representative has then just catered to this requirement, vacuum device is applied to AESA body
In system, systematic entirety energy will be greatly enhanced, is the preferable core devices of array antenna system.
Active phased array system has strict requirements to the spacing of unit in system namely to each device in unit
The cross-sectional area of part has very high requirement, and vacuum device is big due to its volume, the characteristics of not easy of integration, usually by array antenna
System is ignored.Travelling-wave tubes is to applied in AESA system, it is inadequate to carry out volume Miniaturization Design to travelling-wave tubes
, in addition it is also necessary to the delivery of energy structure to travelling-wave tubes is redesigned, and makes delivery of energy direction parallel with body, reduces whole travelling-wave tubes
Cross-sectional area.
As shown in figure 1, most of helix TWTs are mainly using helix-coaxial window-coaxial line turning delivery of energy at present
Structure 1, including coaxial window 11 and the coaxial line 12 coaxially connected with coaxial window 11, wherein, coaxial window 11 include inner wire 111,
Dielectric disk in window 112 and outer conductor 113, for make coaxial line change direction so as to along travelling-wave tubes axial direction extend, need pair with it is coaxial
The coaxially connected coaxial line 12 of window 11 carries out pressure bending, and this structure is higher to the intensity requirement of coaxial cable and needs necessarily
Bending radius, simultaneously because coaxial line 12 needs screw thread with coaxial window 11 or snapped connection, adds the height of delivery of energy structure,
The lateral dimension of travelling-wave tubes homogeneous tube is further increased, this structure is unfavorable for the Miniaturization Design of travelling-wave tubes.
Accordingly, it is desirable to provide a kind of delivery of energy structure of the Miniaturizable of compact dimensions, is easy to travelling-wave tubes in phased array antenna
Applied in system.
Utility model content
A purpose of the present utility model is to provide a kind of travelling-wave tubes right angle delivery of energy structure based on microstrip line, this practicality
Another new purpose is to provide a kind of travelling-wave tubes with microstrip transmission line, formation helix TWT right angle delivery of energy knot
Structure, surface input or the energy of output travelling-wave tubes inner vortex close to travelling-wave tubes, reduces the lateral dimension of helix TWT,
Meet the topology requirement for helix TWT of active phase array antenna system.
In order to solve the above technical problems, the utility model uses following technical proposals：
The utility model discloses a kind of travelling-wave tubes right angle delivery of energy structure based on microstrip line, the right angle delivery of energy structure bag
Include：
Coaxial window including inner wire, dielectric disk in window and outer conductor；And
Microstrip line including medium substrate and the conductor formed in medium substrate；
The conductor of the microstrip line is located at one end outside travelling-wave tubes perpendicular to the inner wire and inner wire and electrically connected；
One end that the inner wire is located in travelling-wave tubes is electrically connected with helix.
Preferably, the microstrip line extends perpendicular to coaxial windowsill traveling wave pipe surface.
Preferably, the conductor of the microstrip line is the linear conductor overlayed on medium substrate surface.
Preferably, the conductor of the microstrip line is electrically connected with inner wire welding.
Preferably, the outer conductor includes the branch for being used to provide microstrip line support extended perpendicular to coaxial window inner wire
Support part.
Preferably, the coaxial window is ox-eye or rectangular window.
Preferably, the coaxial window inner wire is connected with the helix using laser welding.
The utility model also discloses a kind of travelling-wave tubes with right angle delivery of energy structure, and the travelling-wave tubes includes：
Coaxial window including inner wire, dielectric disk in window and outer conductor；And
Microstrip line including medium substrate and the conductor formed in medium substrate；
The conductor of the microstrip line is located at one end outside travelling-wave tubes perpendicular to the inner wire and inner wire and electrically connected；
One end that the inner wire is located in travelling-wave tubes is electrically connected with helix.
The beneficial effects of the utility model are as follows：
The utility model by using microstrip line as coaxial window delivery of energy means, by the conductor of microstrip line perpendicular to coaxial window
Inner wire and inner wire weld and microstrip line are attached to the surface of coaxial window dielectric disk in window, using the input of coaxial window inner wire or
Export the energy on travelling-wave tubes inner vortex.According to the coaxial window delivery of energy structure of microstrip line of the present utility model, microstrip line is realized
The extension of coaxial window is directly perpendicular to, conventional coaxial line transmission medium is reduced and realizes space required for right angle corner.Meanwhile, will
Microstrip line is attached at the surface of coaxial window, extended along travelling-wave tubes axial direction, can further reduce the height of travelling-wave tubes delivery of energy structure
Degree, effectively reduces the radial dimension of travelling-wave tubes, is easy to travelling-wave tubes being applied in phased array antenna system.
Brief description of the drawings
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the schematic diagram of existing helix-coaxial window-coaxial line turning delivery of energy structure.
Fig. 2 shows the top view and section view of a kind of travelling-wave tubes right angle delivery of energy structure based on microstrip line of the present utility model
Figure.
Fig. 3 shows a kind of travelling-wave tubes right angle delivery of energy structure ox-eye and rectangular window based on microstrip line of the present utility model
Schematic diagram.
Fig. 4 show a kind of travelling-wave tubes right angle delivery of energy structure microstrip line based on microstrip line of the present utility model top view and
Sectional view.
Fig. 5 shows a kind of signal of travelling-wave tubes right angle delivery of energy structure simulation result based on microstrip line of the present utility model
Figure.
Fig. 6 shows a kind of signal of travelling-wave tubes right angle delivery of energy structural experiment result based on microstrip line of the present utility model
Figure.
Reference：
1st, helix-coaxial window-coaxial line turning delivery of energy structure, 11, coaxial window, 111, inner wire, 112, dielectric disk in window,
113rd, outer conductor 12, coaxial line；
2nd, the helix TWT right angle delivery of energy structure based on microstrip line, 21, coaxial window；22nd, microstrip line, 211, interior lead
Body, 212, dielectric disk in window, 213, outer conductor, 221, medium substrate, 222, conductor.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and protection domain of the present utility model should not be limited with this.
Fig. 2 shows the travelling-wave tubes right angle delivery of energy structure according to the utility model one embodiment.As shown in Fig. 2 this practicality
New to disclose a kind of travelling-wave tubes right angle delivery of energy structure 2 based on microstrip line, the right angle delivery of energy structure 2 includes：Led including interior
Body 211, the coaxial window 21 of dielectric disk in window 212 and outer conductor 213 and including medium substrate 221 and formed in medium substrate 221
On conductor 222 the microstrip line 22 that can extend perpendicular to the coaxial window 21.Inner wire 211 be located at travelling-wave tubes in one end with
Helix in travelling-wave tubes is welded for example with Laser Welding, and inner wire 211 is located at one end and the microstrip line 22 outside travelling-wave tubes
Conductor it is vertical 222 electrical connection, for example, can by the surface of dielectric disk in window 212 formed localized metallic realize inner wire 211 with
The upper conductor of microstrip line 22 is welded.The welding structure of coaxial window 21 and microstrip line 22 needs to ensure the right angle delivery of energy structure 2 after welding
The sealing set with travelling-wave tubes, to maintain the vacuum environment in travelling-wave tubes.In the embodiment, outer conductor 213 can be cross section
The hollow housing matched with the shape of dielectric disk in window 212, can be grounded setting.Coaxial window 21 can be using circular or rectangle etc.
Shape, the shape of dielectric disk in window 212 is as shown in Figure 3.Coaxial window 21 maintains the vacuum environment in helix TWT, while
Dielectric support can be provided for the microstrip line 22.For example, as shown in Fig. 2 window 212 and outer conductor 213 are end seal structure, leading outside
Body 213 preferably includes the supporting part extended perpendicular to the coaxial inner wire 211 of window 21, for providing support to microstrip line 22.Can be with
Understand, coaxial window 21 can realize identical performance requirement using other sealing structures.
The microstrip line 22 is set perpendicular to the travelling-wave tubes inner wire 211, can be extended along travelling-wave tubes axially direction, excellent
Selection of land is attached at the surface of the dielectric disk in window 212, can further reduce the height and microstrip line of travelling-wave tubes right angle delivery of energy structure 2
The space that 22 transmission mediums are occupied.As shown in figure 4, the conductor 222 of microstrip line 22 is preferably to overlay on the surface of medium substrate 221
Linear conductor, may be disposed at side of the microstrip line 22 away from travelling-wave tubes.The conductor of microstrip line 22 can cover metal medium using etching
The mode of plate obtains microstrip line 22, and the line style of the microstrip line 22 need to meet the performance requirement of the signal of right angle delivery of energy structure 2 transmission,
The microstrip line of gradual change figure can be used.One end of the conductor 222 of microstrip line 22 can be welded with the coaxial inner wire 211 of window 21 to be connected
Connect.
As the presently preferred embodiments, the utility model further relates to a kind of travelling-wave tubes with microstrip transmission line, the travelling-wave tubes bag
Include the travelling-wave tubes right angle delivery of energy structure 2 as described above based on microstrip line.For simplicity, the structure of travelling-wave tubes is no longer gone to live in the household of one's in-laws on getting married herein
State.
The travelling-wave tubes right angle delivery of energy construction design method based on microstrip line according to the parameter of travelling-wave tubes for example including wanting
Ask, select the shape of coaxial window 21 and the material of dielectric disk in window 212, select the material of the medium substrate 221 of microstrip line 22；It is determined that being situated between
The thickness and appearance and size of matter window 212；Determine the thickness of conductor 222, width and shape；Determine the thickness of medium substrate 221.
The effective dielectric constant for obtaining microstrip line 22 first is
Wherein, εrFor the dielectric constant of medium substrate, w is conductor width, and h is medium substrate thickness.
WhenWhen, above-mentioned formula can be reduced to
When medium is air, the coupled impedance of microstrip line 22 is
And then can obtain the coupled impedance of microstrip line 22 in the present embodiment and be
W '=w+ Δs w '
Wherein, t is conductor thickness.
In order to optimize travelling-wave tubes right angle delivery of energy structure, primarily determine that conductor 222 is thick according to design method of the present utility model
The thickness of degree, width and shape and medium substrate 221, based on the coupled impedance of microstrip line 22, utilizes electromagnetic simulation software example
Such as CST is emulated to travelling-wave tubes return loss characteristic (S11 parameters) and standing-wave ratio (VSWR), according to required travelling-wave tubes S11
Parameter and VSWR, to the thickness and profile of the thickness of conductor 222, width and the shape primarily determined that and medium substrate 221
Size is optimized.
The utility model is further described below by an instantiation.Built first in simulation analysis environment
The threedimensional model of vertical right angle delivery of energy structure：The rectangle that is shaped as of coaxial window 21 is selected, the material of dielectric disk in window 212 is made pottery for aluminum oxide
Porcelain and the material of the medium substrate 221 of microstrip line 22 are aluminium oxide ceramics, select the thickness and appearance and size of dielectric disk in window 212,
Set up coaxial window 21.The thickness of conductor 222, width and shape are determined, the thickness of medium substrate 221 is determined, microstrip line 22 is set up.Meter
Calculate and obtain the coupled impedance of microstrip line 22 for 50 Ω, the S11 parameters and VSWR of Ku wave bands are verified in simulated environment, and to right angle
The coaxial window 21 of delivery of energy structure 2 and the parameters of microstrip line 22 are optimized, and are obtained the coaxial size of 21 dielectric disk in window of window 212 and are
2 millimeters * 2 millimeters, the thickness of 22 conductor of microstrip line 222 is 0.1 millimeter, and the width of medium substrate 221 is 2 millimeters, S11 parameters now
>=-10dB, VSWR≤2, as shown in Figure 5.
In laboratory environments according to each ginseng of the above-mentioned coaxial window 21 and microstrip line 22 after optimizing in simulated environment
Count and set up travelling-wave tubes right angle delivery of energy structure 2, helix and the coaxial laser welding of 21 inner wire of window 211 to window metallization, are incited somebody to action
Inner wire 211 and microstrip line 22 realize electrical connection by welding, and wherein inner wire 211 is at right angles set with microstrip line 22, is obtained
According to right angle delivery of energy structure 2 of the present utility model.One end connection standard extended in microstrip line 22 along travelling-wave tubes axial direction is same
Axle is exported, and using vector network analyzer, resulting right angle delivery of energy structure 2 is tested.Pass through experimental verification Ku wave bands
S11 parameters and VSWR, obtain S11 parameters >=-10dB, VSWR≤2 are consistent with simulation result, as shown in Figure 6.Therefore, this reality
The high-quality input or output of travelling tube helical line energy can be realized with miniaturization structure with new.
Right angle delivery of energy structure 2 of the present utility model is using coaxial window 21 and perpendicular to the coaxial window 21, along travelling-wave tubes table
The microstrip line 22 of face extension inputs or exported the signal in travelling-wave tubes on helix.It is defeated according to travelling-wave tubes right angle of the present utility model
Can structure 2 need not using be threadedly coupled with coaxial window 21 or clamping coaxial line, it is to avoid due to forcing bending coaxial line to be formed
The problem of turning delivery of energy structure and the travelling-wave tubes lateral dimension that causes increase.Microstrip line 22 is tabular and can in the utility model
Be attached at the surface of the coaxial window 21, it is not necessary to which external protector is set, can be directly exposed in air, relative to existing
Coaxial line turning delivery of energy, structure and technique are simple, the height of travelling-wave tubes delivery of energy structure can be greatly lowered, so as to reduce traveling wave
The size of pipe, make travelling-wave tubes is designed to further miniaturization, is easy to be applied in AESA system.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model extends out still in of the present utility model
The row of protection domain.
Claims (8)
1. a kind of travelling-wave tubes right angle delivery of energy structure based on microstrip line, it is characterised in that the right angle delivery of energy structure includes：
Coaxial window including inner wire, dielectric disk in window and outer conductor；And
Microstrip line including medium substrate and the conductor formed in medium substrate；
The conductor of the microstrip line is located at one end outside travelling-wave tubes perpendicular to the inner wire and inner wire and electrically connected；
One end that the inner wire is located in travelling-wave tubes is electrically connected with helix.
2. delivery of energy structure in right angle according to claim 1, it is characterised in that the microstrip line is perpendicular to coaxial windowsill traveling wave
Pipe surface extends.
3. delivery of energy structure in right angle according to claim 1, it is characterised in that the conductor of the microstrip line is to overlay on medium base
Linear conductor on basal surface.
4. delivery of energy structure in right angle according to claim 1, it is characterised in that the conductor of the microstrip line is welded with inner wire
Electrical connection.
5. delivery of energy structure in right angle according to claim 1, it is characterised in that the outer conductor is included in coaxial window
The supporting part for being used to provide microstrip line support of conductor extension.
6. delivery of energy structure in right angle according to claim 1, it is characterised in that the coaxial window is ox-eye or rectangular window.
7. delivery of energy structure in right angle according to claim 1, it is characterised in that the coaxial window inner wire and the helix
Connected using laser welding.
8. a kind of travelling-wave tubes with right angle delivery of energy structure, the travelling-wave tubes includes：
Coaxial window including inner wire, dielectric disk in window and outer conductor；And
Microstrip line including medium substrate and the conductor formed in medium substrate；
The conductor of the microstrip line is located at one end outside travelling-wave tubes perpendicular to the inner wire and inner wire and electrically connected；
One end that the inner wire is located in travelling-wave tubes is electrically connected with helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720242532.5U CN206505886U (en) | 2017-03-14 | 2017-03-14 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720242532.5U CN206505886U (en) | 2017-03-14 | 2017-03-14 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783478A (en) * | 2017-03-14 | 2017-05-31 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes and its method for designing |
-
2017
- 2017-03-14 CN CN201720242532.5U patent/CN206505886U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783478A (en) * | 2017-03-14 | 2017-05-31 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes and its method for designing |
| CN106783478B (en) * | 2017-03-14 | 2018-09-28 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure, travelling-wave tubes and its design method based on microstrip line |
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