CN105914116B - A kind of ultra-wideband microwave pipe energy coupling structure - Google Patents
A kind of ultra-wideband microwave pipe energy coupling structure Download PDFInfo
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- CN105914116B CN105914116B CN201610309466.9A CN201610309466A CN105914116B CN 105914116 B CN105914116 B CN 105914116B CN 201610309466 A CN201610309466 A CN 201610309466A CN 105914116 B CN105914116 B CN 105914116B
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- outer conductor
- media ceramic
- ceramic window
- inner wire
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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
- H01J23/26—Helical slow-wave structures; Adjustment therefor
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Abstract
The invention discloses a kind of ultra-wideband microwave pipe energy coupling structure, solves the problem of design and the manufacture of delivery of energy window in the prior art are difficult, and the processing of part and welding deviation will cause the obvious reflection of signal.The ultra-wideband microwave pipe energy coupling structure, including：Media ceramic window, outer conductor and inner wire；The media ceramic window and the inner wire may be contained within the inside of the outer conductor；The media ceramic window is fixedly connected with the outer conductor, is provided with circular hole；The inner wire is fixedly connected through the circular hole and with the media ceramic window；The outer conductor and inner wire are coaxial.The present invention is simple in construction, easy to make, in ultra-wideband microwave pipe working band（0~28GHz）Interior voltage standing wave ratio reaches less than 1.2, and vacuum-tightness is good.
Description
Technical field
The present invention relates to a kind of working frequency range in microwave electron tube technical field, especially microwave electron tube
Ultra-wideband microwave pipe energy coupling structure from direct current to Ka wave bands.
Background technology
Microwave tube delivery of energy window is for inputting the part with exporting energy for microwave tube, to be kept in structure in microwave tube
Vacuum state；In electric property, allow microwave signal as far as possible without loss outside pipe transmission line be sent in pipe slow wave line or
Person's cavity（Or the transmission line outside pipe is transported to from slow wave line, cavity）.
Whether good microwave tube delivery of energy window designed, and the working band for directly influencing pipe and gain and gain are put down
Smooth degree.In addition, in the input of microwave tube, excessive reflection power can reduce modulation of the input signal to electron beam so that
Interaction efficiency reduces；In the output end of microwave tube, excessive reflection power is contracted by device absorption, easily burns reducer heating
It is bad, therefore in microwave tube, it is desirable to input, output block matches well with microwave tube, its frequency response characteristic should be greater than pipe
Bandwidth of operation.However, the microwave tube in millimeter wave frequency band range is operated in, and as working frequency raises, the chi of device in itself
Very little to diminish, the design of delivery of energy window and manufacture are more difficult, and the processing of part and welding deviation will cause the obvious reflection of signal.
The content of the invention
It is an object of the invention to overcome drawbacks described above, there is provided and it is a kind of simple in construction, easy to make, it may be used on ultra wide band
Ultra-wideband microwave pipe energy coupling structure in microwave tube.
To achieve these goals, the present invention uses following technical scheme：
A kind of ultra-wideband microwave pipe energy coupling structure, including：Media ceramic window, outer conductor and inner wire；Given an account of
Matter ceramics window and the inner wire may be contained within the inside of the outer conductor；The media ceramic window is consolidated with the outer conductor
Fixed connection, is provided with circular hole；The inner wire is fixedly connected through the circular hole and with the media ceramic window；It is described
Outer conductor and inner wire are coaxial.By above-mentioned setting, signal reflex can be effectively reduced, reduces signal reflex power.
Further, it is provided with the outer conductor positioned at the junction of itself and the media ceramic window outwards recessed
Rank becomes changeover portion.Become the setting of changeover portion by rank, impedance matching condition can be met, reduce reflection loss.
Further, the both ends of the outer conductor and the inner wire use gradual transition structure, thus form gradual change
Changeover portion, the diameter of gradual transition section taper into towards the direction close to end.Outer conductor and inner wire both ends use gradual change
The effect of transition structure is：Easily it is connected with sub-miniature A connector, is easy to test to use.
Further, the outer conductor includes rank change changeover portion, and the outer conductor both sides become the axle of changeover portion with the rank
Line is symmetrical arranged for symmetry axis；The outer conductor side includes the first flat segments, the first gradual transition section and the being sequentially connected
Two flat segments, the bottom that first flat segments become changeover portion with the rank are connected.
Further, the inner wire includes the 3rd flat segments and is symmetricly set in the second of the 3rd flat segments both sides
Gradual transition section.
Further, the media ceramic window is fixed with the outer conductor by being welded and fixed components welding.
Further, the component that is welded and fixed is located at the outside that the rank becomes changeover portion.
Further, the media ceramic window is wafer architecture, and the circular hole is disposed therein portion.
Further, the media ceramic window is the disc-shaped signle crystal alumina that dielectric constant is 9.4.
Further, the inner wire is perpendicular to the media ceramic window.
Compared with prior art, the invention has the advantages that：
The present invention is simple in construction, easy to make, in ultra-wideband microwave pipe working band（0~28GHz）Interior voltage standing wave ratio
Reach less than 1.2, vacuum-tightness is good, may be used in ultra-wideband microwave pipe, especially as the defeated of ultra-wideband microwave pipe
Can window.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the standing-wave ratio curve of the present invention.
Title in accompanying drawing corresponding to reference is as follows：1- media ceramic windows, 2- outer conductors, 3- inner wires, 4- welderings
Connect fixation kit；The flat segments of 21- first, 22- the first gradual transition sections, the flat segments of 23- second, 24- ranks become changeover portion, 31- the
Three flat segments, 32- the second gradual transition sections.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include but is not limited to
The following example.
Embodiment 1
As shown in figure 1, present embodiments providing a kind of ultra-wideband microwave pipe energy coupling structure, the structure mainly includes
Have：Outer conductor, inner wire and media ceramic window three parts；Wherein, outer conductor is the structure with cavity, inner wire and medium
Ceramic window may be contained within the cavity inside outer conductor, and inner wire is slim-lined construction.Outer conductor, inner wire and media ceramic window
The connected mode of piece is as follows：Media ceramic window is welded and fixed by being welded and fixed component with outer conductor, specifically, medium pottery
The end of porcelain window passes outer conductor and extended to outside outer conductor, is welded and fixed the portion that component overwrite media ceramics window passes
Position；Circular hole is offered in the middle part of media ceramic window, inner wire vertically penetrates circular hole and is welded and fixed with media ceramic window.
The position relationship of outer conductor, inner wire and media ceramic window is as follows：Outer conductor and inner wire are coaxial, and media ceramic window is set
At the middle part of outer conductor, on the basis of Fig. 1 views, outer conductor is coaxial in the horizontal with inner wire, and media ceramic window with leading outside
Body is coaxial in the axial direction.This kind of coupled structure can realize working frequency range from direct current to Ka wave bands.
In view of reflection loss, the present embodiment is set in the junction of itself and the media ceramic window outer conductor is upper
There is outwards recessed rank to become changeover portion.Become the setting of changeover portion by rank, impedance matching condition can be met, reduce reflection loss.
The shape that rank becomes changeover portion is in inverted concave, and media ceramic window end is located at the inside of spill.
The both ends of conductor and the inner wire use gradual transition structure, thus form gradual transition section, gradual transition
The diameter of section tapers into towards the direction close to end；Wherein, term " diameter " refers to coaxial port interior diameter, as shown in Figure 1
Schematic cross-section center to both sides distance.Outer conductor and inner wire both ends are existed using the effect of gradual transition structure
In：Easily it is connected with sub-miniature A connector, is easy to test to use.
The concrete structure of outer conductor is as follows：Outer conductor includes rank and becomes changeover portion, and the outer conductor both sides were become with the rank
The axis for crossing section is symmetrical arranged for symmetry axis；The outer conductor side includes the first flat segments, the first gradual change being sequentially connected
Section and the second flat segments are crossed, the bottom that first flat segments become changeover portion with the rank is connected.On the basis of Fig. 1, first gradually
Become one end that changeover portion is connected with the first flat segments and be higher than one end that the first gradual transition section is connected with the second flat segments, this area
Technical staff can adjust the gradient of the first gradual transition section according to being actually needed.It is it should be noted that first flat in Fig. 1
Length ratio shown in straight section, the first gradual transition section and the second flat segments is a kind of citing, those skilled in the art according to
Need to be adjusted, ratio shown in Fig. 1 should not limit the protection domain of the application.
The concrete structure of inner wire is as follows：Inner wire includes the 3rd flat segments and is symmetricly set in the 3rd flat segments two
Second gradual transition section of side.It should be noted that the length ratio of the 3rd flat segments and the second gradual transition section, angle are closed
System, those skilled in the art can be adjusted as needed, the 3rd flat segments and the second gradual transition section shown in Fig. 1
Length ratio, angular relationship should not limit the protection domain of the application.
As a kind of preferred embodiment, in the present embodiment, media ceramic window is the disc-shaped monocrystalline oxygen that dielectric constant is 9.4
Change aluminium.
This kind of ultra-wideband microwave pipe energy coupling structure modeling and simulating in electromagnetic simulation software can be obtained into voltage to stay
Bob curve, as shown in Fig. 2 can meet that voltage standing wave ratio is less than 1.2 in 0~28GHz working band.
Embodiment 2
A kind of ultra-wideband microwave pipe energy coupling structure is present embodiments provided, the structure mainly includes：It is outer conductor, interior
Conductor and media ceramic window three parts；Wherein, outer conductor is the structure with cavity, and inner wire and media ceramic window are all provided with
It is placed in the cavity inside outer conductor, inner wire is slim-lined construction.The connected mode of outer conductor, inner wire and media ceramic window
It is as follows：Media ceramic window is welded and fixed by being welded and fixed component with outer conductor, specifically, the end of media ceramic window
Pass outer conductor to extend to outside outer conductor, be welded and fixed the position that component overwrite media ceramics window passes；In media ceramic
Circular hole is offered in the middle part of window, as different from Example 1, in the present embodiment, inner wire is at an angle（Out of plumb）Wear
Enter circular hole and be welded and fixed with media ceramic window, remaining structure, shape and the position relationship of coupled structure, annexation with
Embodiment 1 is identical, and therefore not to repeat here.Wherein, the angled relationships between inner wire and media ceramic window, people in the art
Member can be selected according to being actually needed.
Embodiment 3
A kind of ultra-wideband microwave pipe energy coupling structure is present embodiments provided, the structure mainly includes：It is outer conductor, interior
Conductor and media ceramic window three parts；Wherein, outer conductor is the structure with cavity, and inner wire and media ceramic window are all provided with
It is placed in the cavity inside outer conductor, inner wire is slim-lined construction.The connected mode of outer conductor, inner wire and media ceramic window
It is as follows：Media ceramic window is welded and fixed by being welded and fixed component with outer conductor, specifically, the end of media ceramic window
Pass outer conductor to extend to outside outer conductor, be welded and fixed the position that component overwrite media ceramics window passes；In media ceramic
Circular hole is offered in the middle part of window, inner wire vertically penetrates circular hole and is welded and fixed with media ceramic window.Outer conductor, inner wire
It is as follows with the position relationship of media ceramic window：Outer conductor and inner wire are coaxial, and media ceramic window is arranged in outer conductor
Portion, outer conductor is coaxial in the horizontal with inner wire, and media ceramic window is coaxial in the axial direction with outer conductor.This kind of coupled structure can
Realize working frequency range from direct current to Ka wave bands.
In view of reflection loss, the present embodiment is set in the junction of itself and the media ceramic window outer conductor is upper
There is outwards recessed rank to become changeover portion.Become the setting of changeover portion by rank, impedance matching condition can be met, reduce reflection loss.
It is not both that in the present embodiment, rank becomes the shape of changeover portion in two angles to inverted " recessed " shape that has fillet with embodiment 1.
Remaining structure, shape and the position relationship of coupled structure, annexation are same as Example 1, and therefore not to repeat here.
Embodiment 4
A kind of ultra-wideband microwave pipe energy coupling structure is present embodiments provided, the structure mainly includes：It is outer conductor, interior
Conductor and media ceramic window three parts；Wherein, outer conductor is the structure with cavity, and inner wire and media ceramic window are all provided with
It is placed in the cavity inside outer conductor, inner wire is slim-lined construction.The connected mode of outer conductor, inner wire and media ceramic window
It is as follows：Media ceramic window is welded and fixed by being welded and fixed component with outer conductor, as different from Example 1, the present embodiment
In, the both ends of media ceramic window do not pass outer conductor, and its corresponding both ends are embedded in the wall of outer conductor.Coupled structure its
Remaining structure, shape and position relationship, annexation are same as Example 1, and therefore not to repeat here.
According to above-described embodiment, the present invention can be realized well.What deserves to be explained is before based on above-mentioned design principle
Put, to solve same technical problem, some made on architecture basics disclosed in this invention are without substantial
Change or polishing, the essence of used technical scheme is still as the present invention, therefore it should also be as the protection model in the present invention
In enclosing.
Claims (7)
- A kind of 1. ultra-wideband microwave pipe energy coupling structure, it is characterised in that including：Media ceramic window (1), outer conductor (2) With inner wire (3)；The media ceramic window (1) and the inner wire (3) may be contained within the inside of the outer conductor (2)；Institute Give an account of matter ceramics window (1) to be fixedly connected with the outer conductor (2), be provided with circular hole；The inner wire (3) is described in Circular hole is simultaneously fixedly connected with the media ceramic window (1)；The outer conductor (2) and inner wire (3) are coaxial；The junction of itself and the media ceramic window (1) outwards recessed rank is provided with the outer conductor (2) to become Section (24) is crossed, the end of the media ceramic window (1) is located at the inside of spill, and the end of the media ceramic window (1) Portion passes the outer conductor (2) and extends to the outer conductor (2) outside；The position that the media ceramic window (1) is passed by covering the media ceramic window (1) is welded and fixed component (4) It is welded and fixed with the outer conductor (2).
- 2. ultra-wideband microwave pipe energy coupling structure according to claim 1, it is characterised in that the outer conductor (2) and The both ends of the inner wire (3) use gradual transition structure, thus form gradual transition section, the diameter court of gradual transition section leans on The direction of close end tapers into.
- 3. ultra-wideband microwave pipe energy coupling structure according to claim 2, it is characterised in that outer conductor (2) bag Include rank and become changeover portion (24), the axis that outer conductor (2) both sides become changeover portion (24) using the rank is symmetrical arranged into symmetry axis； Outer conductor (2) side includes the first flat segments (21), the first gradual transition section (22) and the second flat segments being sequentially connected (23), first flat segments (21) are connected with the bottom of rank change changeover portion (24).
- 4. ultra-wideband microwave pipe energy coupling structure according to claim 2, it is characterised in that inner wire (3) bag Include the 3rd flat segments (31) and be symmetricly set in the second gradual transition section (32) of the 3rd flat segments (31) both sides.
- 5. ultra-wideband microwave pipe energy coupling structure according to claim 1, it is characterised in that the media ceramic window (1) it is wafer architecture, the circular hole is disposed therein portion.
- 6. ultra-wideband microwave pipe energy coupling structure according to claim 5, it is characterised in that the media ceramic window (1) it is disc-shaped signle crystal alumina that dielectric constant is 9.4.
- 7. ultra-wideband microwave pipe energy coupling structure according to claim 5, it is characterised in that the inner wire (3) is hung down Directly in the media ceramic window (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309466.9A CN105914116B (en) | 2016-05-10 | 2016-05-10 | A kind of ultra-wideband microwave pipe energy coupling structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309466.9A CN105914116B (en) | 2016-05-10 | 2016-05-10 | A kind of ultra-wideband microwave pipe energy coupling structure |
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| CN105914116A CN105914116A (en) | 2016-08-31 |
| CN105914116B true CN105914116B (en) | 2018-01-23 |
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| CN201610309466.9A Expired - Fee Related CN105914116B (en) | 2016-05-10 | 2016-05-10 | A kind of ultra-wideband microwave pipe energy coupling structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727835B (en) * | 2018-12-29 | 2021-06-29 | 中国电子科技集团公司第十二研究所 | Inner conductor for coaxial energy transmission window, coaxial energy transmission window and traveling wave tube |
| CN109742005B (en) * | 2019-02-27 | 2020-06-12 | 电子科技大学 | Coaxial energy transmission window suitable for broadband high power |
| CN111349559B (en) * | 2020-03-13 | 2022-10-14 | 中国人民解放军军事科学院军事医学研究院 | Small broadband microwave biological effect irradiation device |
| CN115103504A (en) * | 2022-08-24 | 2022-09-23 | 合肥中科离子医学技术装备有限公司 | Ceramic window, coupler and accelerator |
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| CN101266908A (en) * | 2008-04-28 | 2008-09-17 | 电子科技大学 | Multiple frequency range and high-power spiral line row wave tube with direct ridge waveguide output |
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| JP2809155B2 (en) * | 1995-10-04 | 1998-10-08 | 日本電気株式会社 | Helix type traveling wave tube |
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|---|---|---|---|---|
| CN101266908A (en) * | 2008-04-28 | 2008-09-17 | 电子科技大学 | Multiple frequency range and high-power spiral line row wave tube with direct ridge waveguide output |
| CN105304439A (en) * | 2015-09-25 | 2016-02-03 | 电子科技大学 | Design method for broadband coaxial window |
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