CN206301756U - A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide - Google Patents
A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide Download PDFInfo
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- CN206301756U CN206301756U CN201620965843.XU CN201620965843U CN206301756U CN 206301756 U CN206301756 U CN 206301756U CN 201620965843 U CN201620965843 U CN 201620965843U CN 206301756 U CN206301756 U CN 206301756U
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- waveguide
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Abstract
The utility model discloses a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, including periodic structure and input and output waveguide are led along at least 2 most shortwaves that Z-direction is sequentially communicated.Twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide is made up of some U-bend waveguides, twisted waveguide section and straight wave guide.When applying in travelling-wave tubes isoline electromagnetic wave vacuum device, compared with traditional folded waveguide, the utility model exist when overcoming electron beam by traditional slow-wave structure due to U-bend waveguide belt come 180 degree difference, can advantageously in the bandwidth of operation of broadening electromagnetic wave source.This directrix plane structure allows us that all of electromagnetic wave structure is all arranged on base, is once completed using Numerical-control Milling Machines, to ensure machining accuracy and reduce processing cost.The twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide can realize the compact delay line of various waveguides, single ridged waveguides or double ridged waveguide, particularly slow-wave structure of compact travelling-wave tube amplifier etc..
Description
Technical field
The utility model is related to a kind of electromagnetic transmission line.Specifically, it is to be related to one kind for signal delay or electromagnetism
The compact twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide of the slow-wave structure of wave source.
Background technology
First important application of folded transmission lines is, as signal delay line, to prolong for signal in the systems such as radar
Late.Second important application of folded transmission lines is used as slow-wave structure in travelling-wave tube amplifier.At this moment, electron beam edge
Certain straight line electron passage is propagated, and electromagnetic wave is then propagated along the transmission line of bending.Although being propagated in bending transmission line
The phase velocity of electromagnetic wave quickly, can be close to the light velocity, the even greater than light velocity, but in the straight line electron passage, electron beam
The phase velocity of the electromagnetic wave experienced can be well below the light velocity.The beam energy of the travelling-wave tubes constituted using quasi- folded waveguide can
To substantially reduce, be conducive to the miniaturization of device.
Traditional folded transmission lines are typically formed using transmission line continuous bend.Such as waveguide delay line is by waveguide bend
Stack.Because too small bending curvature radius will cause the reflection of signal, the volume of this delay line is generally all than larger.Fold
Common slow-wave structure in waveguide travelling-wave tube amplifier is replaced and connects and composes respectively using rectangular waveguide section with U-shaped waveguide end,
Equally there is bulky problem.Another problem that common folded waveguide travelling-wave tubes is present is bandwidth problem.This travelling-wave tubes
The folded waveguide of middle use is generally two-dimensional structure, and waveguide is in a plane for crossing Z axis, such as continuous bend in XZ planes.
In this folded waveguide, along Z axis propagate electronics in the folded waveguide by a cycle, have two it is mutual with electromagnetic wave
The region of effect.In the two interaction regions, the phase difference of the electromagnetic wave that the electron beam of transmission is experienced removes electromagnetic wave edge
The bending approach of the folded waveguide is transmitted outside determined phase difference, also including the 180 degree bending ripple due to transmission line caused by
So-called " Shape-phase is poor " of the 180 degree that electromagnetism field direction is reversely determined.The presence of this Shape-phase difference so that along Z axis
Direction propagate electron beam with along folded waveguide propagate electromagnetic wave under the conditions of the speed sync along Z-direction, in same period
In two interaction regions in, suffered by electron beam along Z-direction active force can switching direction, cause electromagnetic wave from electricity
The energy that beamlet is obtained is cancelled out each other.In order to solve this problem, electron beam is along the speed of Z-direction with electromagnetic wave along Z-direction
Average phase velocity must mismatch.Thus the serious limitation to the relative bandwidth of folded waveguide travelling-wave tubes is brought.
Utility model content
The purpose of this utility model is to provide a kind of twisted waveguide combination type directrix plane rectangular waveguide S without Shape-phase difference
Shape folded waveguide.This scheme has simple structure, easy to process, working frequency wide, the features such as compact conformation.
To achieve these goals, our scheme is that a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folds ripple
Lead.The twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide includes being sequentially communicated and repeating at least along Z-direction
2 most shortwaves lead periodic structure, and twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide two ends are provided with input and output
Waveguide.
The friendship of periodic structure is led with described any one most shortwave in the presence of straight line an AB, the straight line AB parallel with Z axis
It is the two continuous line segment CD and line segment EF not being joined directly together mutually to collect.
In the presence of at least one straight line electron beam passage parallel to Z axis；The straight line electron beam passage and the straight line AB
Overlap；The line segment CD leads the maximum amplitude point of the electric-field intensity of electromagnetic wave in periodic structure by the most shortwave.
The both ends of the surface that any most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads periodic structure
Both ends of the surface be shaped as rectangular waveguide, single ridge rectangular waveguide or double ridge rectangular waveguides；Any most shortwave leads periodic structure
Both ends of the surface broadside it is all parallel with Y direction.
When electromagnetic wave frequency close to the mode of operation of the folded waveguide cut-off frequency when, Z axis are any one with described
The direction that individual most shortwave leads the electric field of the electromagnetic wave at two common factors of periodic structure is identical.
Most shortwave of the present utility model leads periodic structure 2 kinds of structures, and the first structure is：Adjacent 2 most shortwaves lead week
Phase structure is directly connected to, and each most shortwave leads periodic structure at least includes 2 respectively positioned at the U-bend waveguide of Y-axis both sides, U
Towards Y-axis, 2 U-bend waveguides that same most shortwave is led in periodic structure are connected the recess of shape waveguide bend using waveguide segment structure,
Connected using waveguide segment structure between one one end and one end of another U-bend waveguide of U-bend waveguide, each described ripple
Segment structure is led including a waveguide segment being located in Y-axis and 2 respectively positioned at the twisted waveguide section of waveguide segment both sides, twisted waveguide section
Gap location between the end of U-bend waveguide and the end face of waveguide segment.
Second structure be：Adjacent 2 most shortwaves are led periodic structure and are directly connected to；Each most shortwave leads periodic structure extremely
Include 2 less respectively positioned at the U-bend waveguide of Y-axis both sides, towards Y-axis, same most shortwave leads cycle knot to the recess of U-bend waveguide
2 U-bend waveguides in structure are connected using waveguide segment structure, one end for U-bend waveguide and the one of another U-bend waveguide
Connected using waveguide segment structure between end, each described waveguide segment structure includes a waveguide segment being located in Y-axis and 1 position
In the twisted waveguide section of waveguide segment one end；Same most shortwave is led in periodic structure, and the one end of the U-bend waveguide of Y-axis side is direct
It is connected with waveguide segment, the one end of the U-bend waveguide of Y-axis opposite side is directly connected with twisted waveguide section, and whole twisted waveguide merges
In formula directrix plane rectangular waveguide S-shaped folded waveguide, adjacent 2 twisted waveguides section is located at Y-axis both sides respectively；Twisted waveguide section by
2 L-shaped waveguide segments overlap the composition that links together, and a L-shaped waveguide segment is in flip horizontal shape compared to another L-shaped waveguide segment
State.
At least one form parameter of at least one cross section is with the twisted waveguide combination type in all U-bend waveguides
The relative change of the center line of directrix plane rectangular waveguide S-shaped folded waveguide is more than 10%；In all waveguide segments at least one it is transversal
At least one form parameter in face with the center line of the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide relative change
Change and be more than 10%.
In most shortwave leads periodic structure described in each, adjacent two twisted waveguides section is not joined directly together mutually；The U
Shape waveguide bend is the U-bend waveguide of H faces.
The waveguide segment is rectangular waveguide.
The twisted waveguide section is L-shaped waveguide segment.
Straight line electron beam passage runs through all waveguide segments.
The U-bend waveguide is the U-bend waveguide of E faces.
The both ends of the surface that any most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads periodic structure
Both ends of the surface be shaped as rectangle；The broadside of the both ends of the surface that any most shortwave leads periodic structure is all parallel with Y direction；Institute
State the upper surface flush of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide；Here the twisted waveguide combination type is accurate
Planar rectangular waveguide S-shaped folded waveguide, including all U-bend waveguides, all waveguide segments, and all twisted waveguides section.
For the ease of processing, the upper surface flush of the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide；This
In the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, including all U-bend waveguides, all waveguide segments,
With all twisted waveguides section.This directrix plane structure allows us that all of electromagnetic wave structure is all arranged on base, uses
Numerical-control Milling Machines are once completed, to ensure machining accuracy and reduce processing cost.
The utility model proposes using the various of rectangular waveguide, single ridged waveguides, double ridged waveguide or other shapes of waveguide
Periodicity twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide.In traditional torsion of existing folded waveguide travelling-wave tubes
On the basis of waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, the electronics that Shape-phase difference band comes is solved well
Broadband stationary problem between beam and electromagnetic wave.This directrix plane structure allows us all to pacify all of electromagnetic wave structure
Come on base, once completed using Numerical-control Milling Machines, to ensure machining accuracy and reduce processing cost.The utility model
Can serve as compact signal delay line.Using the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide as traveling wave
The interaction waveguide of pipe, it is expected to which beam energy needed for substantially reducing high-frequency microwave, millimeter wave, or even THz devices is simultaneously opened up
Its bandwidth of operation wide.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1；
Fig. 2 is the elevational schematic view of the utility model embodiment 1；
Fig. 3 leads periodic structure schematic diagram for the most shortwave of the utility model embodiment 1；
Fig. 4 is the twisted waveguide schematic diagram of the utility model embodiment 1；
Fig. 5 leads periodic structure schematic diagram for the most shortwave of the utility model embodiment 2；
Label correspondence title in accompanying drawing：1- input and output waveguides, 2- waveguide segments, 4-U shape waveguide bends, 5- twisted waveguides section, 7-
Straight line electron beam passage.
Embodiment 1
As Figure 1-4.
A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, including be sequentially communicated and repeat along Z-direction
At least 5 most shortwaves lead periodic structure and input and output waveguide 1.Adjacent 2 most shortwaves are led periodic structure and are directly connected to, each
Individual most shortwave leads periodic structure at least includes 2 respectively positioned at the U-bend waveguides 4 of Y-axis both sides, and the recess of U-bend waveguide is towards Y
Axle, 2 U-bend waveguides 4 that same most shortwave is led in periodic structure are connected using waveguide segment structure, one the one of U-bend waveguide 4
Connected using waveguide segment structure between end and one end of another U-bend waveguide 4, each described waveguide segment structure includes one
Waveguide segment 2 and 2 twisted waveguide sections 5 for being located at the both sides of waveguide segment 2 respectively in Y-axis, twisted waveguide section 5 are located at U-bend waveguide 4
End and the end face of waveguide segment 2 between gap location.
The friendship of periodic structure is led with described any one most shortwave in the presence of straight line an AB, the straight line AB parallel with Z axis
It is the two continuous line segment CD and line segment EF not being joined directly together mutually to collect.
In the presence of a straight line electron beam passage 7 parallel to Z axis；The straight line electron beam passage 7 and straight line AB weights
Close；The line segment CD leads the maximum amplitude point of the electric-field intensity of electromagnetic wave in periodic structure by the most shortwave.
The both ends of the surface that any most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads periodic structure
Both ends of the surface be shaped as rectangular waveguide；The broadside that any most shortwave leads the both ends of the surface of periodic structure is all flat with Y direction
OK.
When electromagnetic wave frequency close to the mode of operation of the folded waveguide cut-off frequency when, the straight line AB with it is described
Any two levels off to zero along the phase difference that the adjacent most shortwave of Z-direction leads the electromagnetic wave at the common factor of periodic structure.
Each most shortwave leads periodic structure includes 2 U-bend waveguides 4 and 2 waveguide segments 2.Each most shortwave leads week
Phase structure also includes 4 twisted waveguide sections 5.
The height of 2 U-bend waveguides 4 and 2 width of the waveguide segment 2 twisted waveguide combination type of U-bend waveguide 4 standards are flat
The relative change of the center line of face rectangular waveguide S-shaped folded waveguide is more than 10%（Not shown in figure）.
When electromagnetic wave frequency close to the mode of operation of the folded waveguide cut-off frequency when, Z axis are any one with described
The direction that individual most shortwave leads the electric field of the electromagnetic wave at two common factors of periodic structure is identical.
In most shortwave leads periodic structure described in each, two adjacent twisted waveguides are not joined directly together mutually；The U-shaped
Waveguide bend 4 is H faces U-bends waveguide 4.
The upper surface flush of the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide；Here the torsional wave
Lead combination type directrix plane rectangular waveguide S-shaped folded waveguide, including all U-bend waveguides 4, all waveguide segments 2, and all torsional waves
Lead section 5.
Embodiment 2
As shown in Figure 5.
Compared with embodiment 1, the difference is that only：
Here all U-bend waveguides 4 are E faces U-bends waveguide 4.During at each, most shortwave leads periodic structure, each two
Twisted waveguide is connected directly to each other one group of composition.It is not joined directly together mutually between two groups of twisted waveguides, specifically, adjacent 2 most shortwaves are led
Periodic structure is directly connected to；Each most shortwave leads periodic structure at least includes 2 respectively positioned at the U-bend waveguide of Y-axis both sides
4, towards Y-axis, 2 U-bend waveguides 4 that same most shortwave is led in periodic structure use waveguide segment structure to the recess of U-bend waveguide
Connection, is connected between the one end and one end of another U-bend waveguide 4 of U-bend waveguide 4 using waveguide segment structure, each
The individual waveguide segment structure includes the twisted waveguide section 5 that a waveguide segment 2 being located in Y-axis and 1 are located at the one end of waveguide segment 2；Together
One most shortwave is led in periodic structure, and the one end of the U-bend waveguide 4 of Y-axis side is directly connected with waveguide segment 2, Y-axis opposite side
The one end of U-bend waveguide 4 is directly connected with twisted waveguide section 5, and whole twisted waveguide combination type directrix plane rectangular waveguide S-shaped is folded
In waveguide, adjacent 2 twisted waveguides section 5 is located at Y-axis both sides respectively；The twisted waveguide section 5 is by 2 L-shaped waveguide segment overlapping connections
Constitute together, a L-shaped waveguide segment is in flip horizontal state compared to another L-shaped waveguide segment.
More than we illustrate several embodiments of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide.
In these examples, in order to draw the convenience of schematic diagram, the periodicity of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide
It is 3-6.In fact, in electromagnetic wave source, particularly in travelling-wave tubes, twisted waveguide combination type directrix plane rectangular waveguide S-shaped is folded
The periodicity of waveguide can up to tens.Meanwhile, it is accurate in order to process these twisted waveguide combination types in the embodiment more than
Planar rectangular waveguide S-shaped folded waveguide is, it is necessary to take the processing methods such as wire cutting, number numerical-control turn-milling, many interior angles need chamfering
Treatment.These chamferings can produce influence to the performance of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, be counted in modeling
Must be taken in during calculation.
Claims (8)
1. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, it is characterised in that X-axis, Y-axis and Z axis structure are set
Coordinate system at a right angle simultaneously meets the right-hand rule；O points are coordinate origin；The twisted waveguide combination type directrix plane rectangular waveguide S-shaped
Folded waveguide includes that at least 2 most shortwaves for being sequentially communicated and repeating along Z-direction lead periodic structure, and the most shortwave cycle of leading refers to
The Z-direction length most short waveguide cycle；Adjacent 2 most shortwaves are led periodic structure and are directly connected to；Each most shortwave leads cycle knot
Structure at least includes 2 respectively positioned at the U-bend waveguide of Y-axis both sides（4）；The recess of U-bend waveguide is towards Y-axis；Same most shortwave
Lead 2 U-bend waveguides in periodic structure（4）Connected using waveguide segment structure；One U-bend waveguide（4）One end with it is another
Individual U-bend waveguide（4）One end between using waveguide segment structure connect；Each described waveguide segment structure includes that is located at a Y
Waveguide segment on axle（2）Waveguide segment is located at 1（2）The twisted waveguide section of side（5）；Same most shortwave is led in periodic structure, Y-axis
The U-bend waveguide of side（4）One end directly and waveguide segment（2）Connection；The U-bend waveguide of Y-axis opposite side（4）One end
Directly with twisted waveguide section（5）Connection；And in whole twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, adjacent 2
Twisted waveguide section（5）Y-axis both sides are located at respectively；The twisted waveguide section（5）Linked together by 2 L-shaped waveguide segment overlappings and constituted, one
Individual L-shaped waveguide segment is in flip horizontal state compared to another L-shaped waveguide segment；Any most shortwave leads the both ends of the surface of periodic structure
It is all parallel with YZ planes；What the most shortwave led the both ends of the surface of periodic structure is shaped as rectangle；Any most shortwave leads the cycle
The broadside of the both ends of the surface of structure is all parallel with Y direction；The twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide
Upper surface flush；Here the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide, including all U-bend waveguides
（4）, all waveguide segments（2）, and all twisted waveguides section（5）.
2. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 1, its feature exists
In there is the common factor that straight line an AB, the straight line AB parallel with Z axis lead periodic structure with described any one most shortwave is
The two continuous line segment CD and line segment EF not being joined directly together mutually.
3. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 2, its feature exists
In there is at least one straight line electron beam passage parallel to Z axis（7）；The straight line electron beam passage（7）With the straight line AB
Overlap；The line segment CD and EF leads the maximum amplitude point of the electric-field intensity of electromagnetic wave in periodic structure by the most shortwave.
4. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 2, when electromagnetic wave
Frequency close to the mode of operation of the folded waveguide cut-off frequency when, the straight line AB is with any two along Z-direction phase
The phase difference that adjacent most shortwave leads the electromagnetic wave at the common factor of periodic structure levels off to zero.
5. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 1, its feature exists
In all U-bend waveguides（4）In at least one cross section at least one form parameter it is accurate with the twisted waveguide combination type
The relative change of the center line of planar rectangular waveguide S-shaped folded waveguide is more than 10%；All waveguide segments（2）In at least one horizontal stroke
At least one form parameter in section is relative with the center line of the twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide
Change is more than 10%.
6. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 1, its feature exists
In the waveguide segment is rectangular waveguide.
7. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 3, its feature exists
In straight line electron beam passage（7）Through all waveguide segments（2）.
8. a kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide according to claim 1, its feature exists
In the U-bend waveguide（4）It is the U-bend waveguide of E faces（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620965843.XU CN206301756U (en) | 2016-08-29 | 2016-08-29 | A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620965843.XU CN206301756U (en) | 2016-08-29 | 2016-08-29 | A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide |
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| CN201620965843.XU Withdrawn - After Issue CN206301756U (en) | 2016-08-29 | 2016-08-29 | A kind of twisted waveguide combination type directrix plane rectangular waveguide S-shaped folded waveguide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128912A (en) * | 2016-08-29 | 2016-11-16 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane rectangular waveguide folded waveguide |
| CN109128316A (en) * | 2018-10-30 | 2019-01-04 | 哈尔滨工业大学 | A kind of tool track planing method applied to folded waveguide slow-wave structure |
| CN114243250A (en) * | 2021-12-23 | 2022-03-25 | 中国电子科技集团公司第三十八研究所 | Broadband delay line, design method and antenna |
-
2016
- 2016-08-29 CN CN201620965843.XU patent/CN206301756U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128912A (en) * | 2016-08-29 | 2016-11-16 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane rectangular waveguide folded waveguide |
| CN109128316A (en) * | 2018-10-30 | 2019-01-04 | 哈尔滨工业大学 | A kind of tool track planing method applied to folded waveguide slow-wave structure |
| CN109128316B (en) * | 2018-10-30 | 2019-07-30 | 哈尔滨工业大学 | A kind of tool track planing method applied to folded waveguide slow-wave structure |
| CN114243250A (en) * | 2021-12-23 | 2022-03-25 | 中国电子科技集团公司第三十八研究所 | Broadband delay line, design method and antenna |
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Granted publication date: 20170704 Effective date of abandoning: 20171110 |