CN206301927U - A kind of double ridge torsional folded waveguides of twisted waveguide combination type - Google Patents
A kind of double ridge torsional folded waveguides of twisted waveguide combination type Download PDFInfo
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- CN206301927U CN206301927U CN201620965791.6U CN201620965791U CN206301927U CN 206301927 U CN206301927 U CN 206301927U CN 201620965791 U CN201620965791 U CN 201620965791U CN 206301927 U CN206301927 U CN 206301927U
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Abstract
The utility model discloses a kind of double ridge torsional folded waveguides of twisted waveguide combination type, including periodic structure and input and output waveguide are led along at least 2 most shortwaves that Z-direction is sequentially communicated（1）.The double ridge torsional folded waveguides of twisted waveguide combination type are 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.Meanwhile, the utility model can make the number of straight line electron beam passage increase to 2 at most roots, can significantly improve beam ripple interaction efficiency.The double ridge torsional folded waveguides of the twisted waveguide combination type 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 double ridge torsional folded waveguides of the compact twisted waveguide combination type 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 folded transmission lines
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 folded transmission lines 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 double ridge torsional foldings of twisted waveguide combination type without Shape-phase difference
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 tiltedly to turn round the double ridge torsionals of coupling twisted waveguide combination type to fold ripple
Lead, including at least 2 most shortwaves for being sequentially communicated along Z-direction and being repeated lead periodic structure, also including 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 rectangle；The broadside of the both ends of the surface that any most shortwave leads periodic structure is all parallel with Y direction.
Or, the both ends of the surface that the most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads periodic structure
Both ends of the surface be single ridge rectangular waveguide；Any most shortwave leads the broadside and Y of any end face in the both ends of the surface of periodic structure
Direction of principal axis is parallel, and the ridge of single ridge rectangular waveguide is located on a broadside of the waveguide.
Or, the both ends of the surface that the most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads periodic structure
Both ends of the surface be double ridge rectangular waveguides；Any most shortwave leads the broadside and Y of any end face in the both ends of the surface of periodic structure
Direction of principal axis is parallel, and described pair of double ridges of ridge rectangular waveguide are located on two broadsides of the waveguide respectively.
From unlike the double ridge torsional folded waveguides of traditional twisted waveguide combination type, when the frequency of electromagnetic wave is close to institute
During the cut-off frequency of the mode of operation for stating folded waveguide, the straight line AB leads the two of periodic structure with described any one most shortwave
The direction of the electric field of the electromagnetic wave at individual common factor is identical.By contrast, the folded waveguide in traditional folded waveguide travelling-wave tubes
In, due to so-called Shape-phase difference presence, the electric field of corresponding electromagnetic wave it is in opposite direction.
Most shortwave leads cycle preferred scheme one：Adjacent 2 most shortwaves are led periodic structure and are directly connected to, each most shortwave
Lead periodic structure at least include 2 respectively positioned at Y-axis both sides U-bend waveguides, the recess of U-bend waveguide towards Y-axis, it is same most
Shortwave is led 2 U-bend waveguides in periodic structure and is connected using waveguide segment structure, an one end for U-bend waveguide and another U
Connected using waveguide segment structure between one end of shape waveguide bend, each described waveguide segment structure includes that one is located in Y-axis
Waveguide segment and 2 twisted waveguide sections for being located at waveguide segment both sides respectively, twisted waveguide section are located at the end and waveguide segment end of U-bend waveguide
Gap location between face.
Most shortwave leads cycle preferred scheme two：Adjacent 2 most shortwaves are led periodic structure and are directly connected to；Each most shortwave
Leading periodic structure at least includes 2 respectively positioned at the U-bend waveguide of Y-axis both sides；The recess of U-bend waveguide is towards Y-axis；It is same most
2 U-bend waveguides that shortwave is led in periodic structure are connected using waveguide segment structure；One one end of U-bend waveguide and another U
Connected using waveguide segment structure between one end of shape waveguide bend；Each described waveguide segment structure includes that one is located in Y-axis
Waveguide segment and 2 twisted waveguide sections for being located at waveguide segment one end simultaneously；This 2 axles of the twisted waveguide section for being located at waveguide segment one end simultaneously
Line overlaps；This 2 simultaneously be located at waveguide segment one end twisted waveguide section in a twisted waveguides section rotate about the axis thereof after with it is another
Individual twisted waveguide section is arranged in a crossed manner in X shapes and is abutted against together；This 2 twisted waveguide section composition torsional waves for being located at waveguide segment one end simultaneously
Lead a section group；Same most shortwave is led in periodic structure, and the one end of the U-bend waveguide of Y-axis side is directly connected with waveguide segment；Y-axis
The one end of the U-bend waveguide of opposite side is directly connected with twisted waveguide section；And the whole double ridge torsional foldings of twisted waveguide combination type
In folded waveguide, adjacent 2 twisted waveguides section group is located at Y-axis both sides respectively；Twisted waveguide section is stacked together and is connected by least 3
Through hole composition.Specifically, the tangent plane that the twisted waveguide section crosses plane A is plane of mirror symmetry；Plane A is one and YZ planes
Parallel and tangent with a certain twisted waveguide section face；There are 2 mirror axis, this 2 mirror images in the tangent plane that twisted waveguide section crosses plane A
Symmetry axis all with Y-axis in angle of 45 degrees；Twisted waveguide section is crossed plane A and is made up of at least 3 through holes for being stacked together and connecting.
2 U-bend waveguides that described each most shortwave leads in periodic structure are the U-bend waveguide of H faces.
2 U-bend waveguides that described each most shortwave leads in periodic structure are the U-bend waveguide of E faces.
The both ends of the surface of the twisted waveguide section are parallel to each other；The distance between both ends of the surface of the twisted waveguide section are less than the torsional wave
Lead the wavelength in the corresponding free space of center operating frequency of the double ridge torsional folded waveguides of combination type 0.2 times.
For the ease of Modeling Calculation, the shape of cross section of the through hole is rectangle.
Each rectangular through-hole is connected by its adjacent edge.
In order to improve double matchings of the ridge torsional folded waveguide in wide-band of the twisted waveguide combination type, 2 U-shapeds
Waveguide bend and/or 2 at least one form parameters of the cross section of waveguide segment are rolled over the double ridge torsionals of the twisted waveguide combination type
The relative change of the center line of folded waveguide is more than 10%.Otherwise, periodic structure is led by the most shortwave and repeats connection structure along Z-direction
Into the double ridge torsional folded waveguides of twisted waveguide combination type some Frequency points may because the superposition reflected cause electromagnetic wave without
Method is smoothly propagated.The center line of the double ridge torsional folded waveguides of the twisted waveguide combination type here is by by electromagnetic wave signal
Maximum field intensity amplitude point in the double ridge torsional folded waveguides of the twisted waveguide combination type.
Tiltedly turn round the double ridge torsional folded waveguides of coupling twisted waveguide combination type overcomes tradition to fold ripple by using twisted waveguide
The Shape-phase led is poor, and method is to allow waveguide while 180 degree bending is done, and the E field polarization direction of electromagnetic wave also completes 180
The rotation of degree.
A kind of situation, 2 U-bend waveguides that described each most shortwave leads in periodic structure are the U-bend waveguide of H faces；It is described
It is interconnected by U-bend waveguide or waveguide segment between 4 twisted waveguide sections.
Another situation, each two twisted waveguide is connected directly to each other one group of composition.Described two twisted waveguides being joined directly together
The spaced winding one of section is angled parallel to the straight line of X-axis, is optimal with 60 degree.Pass through a U-bend between two groups of twisted waveguides
Waveguide is connected with an E faces U-bend waveguide.
The utility model proposes using the various of rectangular waveguide, single ridged waveguides, double ridged waveguide or other shapes of waveguide
The double ridge torsional folded waveguides of periodicity twisted waveguide combination type.On the basis of existing traditional folded waveguide, well
Solve the broadband stationary problem between the next electron beam of Shape-phase difference band and electromagnetic wave.The utility model is also used as
Compact signal delay line.Using the double ridge torsional folded waveguides of the twisted waveguide combination type as travelling-wave tubes interaction ripple
Lead, it is expected to beam energy needed for substantially reducing high-frequency microwave, millimeter wave, or even THz devices and broadening its work band
It is wide.It is expected to be operated in ultra wide band frequency especially with the travelling-wave tubes for tiltedly turning round coupling folding ridge waveguide.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1；
Fig. 2 leads periodic structure schematic diagram for the most shortwave of the utility model embodiment 1；
Fig. 3 is the twisted waveguide schematic diagram of the utility model embodiment 1；
Fig. 4 is the H faces U-shaped ridge waveguide schematic diagram of the utility model embodiment 1；
Fig. 5 is the schematic diagram of the utility model embodiment 2；
Fig. 6 leads periodic structure schematic diagram for a most shortwave of the utility model embodiment 2；
Fig. 7 is the schematic diagram of the utility model embodiment 3；
Fig. 8 leads periodic structure schematic diagram for the most shortwave of the utility model embodiment 3；
Fig. 9 is two twisted waveguide schematic diagrames for interconnecting of the utility model embodiment 3；
Label correspondence title in accompanying drawing：1- input and output waveguides, 2- waveguide segments, 4-U shape waveguide bends, 5- twisted waveguides section,
51- through holes, 7- straight line electron beam passages.
Embodiment 1
As Figure 1-4.
A kind of double ridge torsional folded waveguides of twisted waveguide combination type, including 4 for being sequentially communicated along Z-direction and being repeated
Individual most shortwave leads periodic structure and input and output waveguide 1.Adjacent 2 most shortwaves are led periodic structure and are directly connected to, and each is most short
Waveguide periodic structure at least includes 2 respectively positioned at the U-bend waveguides 4 of Y-axis both sides, the recess of U-bend waveguide towards Y-axis, together
One most shortwave leads 2 U-bend waveguides 4 in periodic structure using the connection of waveguide segment structure, an one end for U-bend waveguide 4 with
Connected using waveguide segment structure between one end of another U-bend waveguide 4, each described waveguide segment structure is located at including 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 the end of U-bend waveguide 4
Gap location between portion and the end face of waveguide segment 2.
The tangent plane that the twisted waveguide section 5 crosses plane A is plane of mirror symmetry, and plane A is the face parallel with YZ planes, torsional wave
There are 2 symmetry axis in the tangent plane for leading section 5, all with Y-axis in angle of 45 degrees, tangent plane is stacked together this 2 symmetry axis by least 3
And the through hole 51 for connecting is constituted.
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 is parallel with Z axis；It is described
Straight line electron beam passage 7 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 the most shortwave leads periodic structure are all parallel with YZ planes；The most shortwave leads the two ends of periodic structure
Face is double ridge rectangular waveguides；Any most shortwave leads the broadside and Y direction of any end face in the both ends of the surface of periodic structure
Parallel, described pair of double ridges of ridge rectangular waveguide are located on two broadsides of the waveguide respectively.
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.
Each most shortwave leads periodic structure includes 2 U-bend waveguides 4 and 2 waveguide segments 2.
Each most shortwave leads periodic structure also includes at least 4 twisted waveguide sections 5.
The cross section of the twisted waveguide section 5 is specular, and the normal direction of its plane of symmetry is parallel with YZ planes, and with
Y-axis is in angle of 45 degrees.
There are two mutually perpendicular mirror symmetry planes the cross section of the twisted waveguide section 5；Wherein at least one specular
The normal direction in face and Y-axis into 45 degree of angles.
It is H faces U-bends waveguide 4 that described each most shortwave leads 2 U-bend waveguides 4 in periodic structure；4 torsional waves
Lead and be interconnected by U-bend waveguide 4 or waveguide segment 2 between section 5.
The both ends of the surface of the twisted waveguide section 5 are parallel to each other；The distance between both ends of the surface of the twisted waveguide section 5 are less than the torsion
0.2 times of wavelength in the corresponding free space of center operating frequency of the double ridge torsional folded waveguides of waveguide combination type.
Twisted waveguide section 5 is made up of at least 3 through holes 51 for being stacked together and connecting.Specifically, 5 mistakes of the twisted waveguide section
The tangent plane of plane A is plane of mirror symmetry；Plane A be one it is parallel with YZ planes and with a certain twisted waveguide section 5 tangent faces；Turn round
There are 2 mirror axis in the tangent plane that waveguide segment 5 crosses plane A, this 2 mirror axis all with Y-axis in angle of 45 degrees；Twisted waveguide
Section 5 is crossed plane A and is made up of at least 3 through holes 51 for being stacked together and connecting.
The shape of cross section of the through hole 51 is rectangle.
Each rectangular through-hole 51 is connected by its adjacent edge.
2 U-bend waveguides 4 and 2 height of the metal ridge of waveguide segment are turned round with the double ridge rectangles of the twisted waveguide combination type
The relative change for turning the center line of folded waveguide is more than 10%（Not shown in figure）.
The common factor that the straight line AB leads periodic structure with described any one most shortwave is two companies not being joined directly together mutually
Continuous line segment CD and line segment EF.That is, straight line electron beam passage 7 leads periodic structure with arbitrarily most shortwave two intersections
Domain.
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
The direction that any one most shortwave leads the electric field of the electromagnetic wave at two common factors of periodic structure is identical.
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 cross section of the twisted waveguide section 5 is specular, and the normal direction of its mirror symmetry planes is parallel with YZ planes, and
And with Y-axis in angle of 45 degrees.
There are two mutually perpendicular mirror symmetry planes the cross section of the twisted waveguide section 5；Wherein 2 methods of mirror symmetry planes
Line direction and Y-axis into 45 degree of angles.Preferably design, two normal directions of mutually perpendicular mirror symmetry planes respectively with Y-axis into
45 degree of angles and -45 degree angles.
The twisted waveguide section is for cross section for one section of shortwave of definite shape is led：The cross section of the twisted waveguide section 5 is by extremely
Few 3 through holes 51 for connecting in a certain direction are constituted.
The distance between both ends of the surface of the twisted waveguide section 5 are less than the double ridge torsional folded waveguides of the twisted waveguide combination type
The corresponding free space of center operating frequency in 0.2 times of wavelength.
The shape of cross section for constituting the through hole 51 of twisted waveguide section 5 is rectangle.
Each rectangular through-hole 51 is connected by its adjacent edge.
It is H faces U-bends waveguide 4 that described each most shortwave leads 2 U-bend waveguides 4 in periodic structure；4 torsional waves
Lead and be interconnected by U-bend waveguide 4 or waveguide segment 2 between section 5.
Input and output waveguide is double ridged waveguide.
Embodiment 2
As illustrated in Figures 5 and 6.
Compared with embodiment 1, the difference is that only：
Here, each most shortwave leads periodic structure includes 2 H faces rectangular waveguide U-bends waveguides 4 and 2 rectangular waveguides
Section 2.
Input and output waveguide is rectangular waveguide.
Embodiment 3
As Figure 7-9.
Compared with embodiment 1, the difference is that only：
During at each, most shortwave leads periodic structure, each two twisted waveguide is connected directly to each other one group of composition.Two groups of torsional waves
It is not joined directly together mutually between leading.The double ridge waveguide bends 4 of U-shaped are E faces double ridge U-bends waveguide 4.Specifically, adjacent 2 most shortwaves lead week
Phase structure is directly connected to；Each most shortwave leads periodic structure at least includes 2 respectively positioned at the U-bend waveguide 4 of Y-axis both sides；U
The recess of shape waveguide bend is towards Y-axis；2 U-bend waveguides 4 that same most shortwave is led in periodic structure are connected using waveguide segment structure
Connect；Connected using waveguide segment structure between one one end and one end of another U-bend waveguide 4 of U-bend waveguide 4；Each
The waveguide segment structure includes a waveguide segment 2 being located in Y-axis and 2 twisted waveguide sections 5 for being located at the one end of waveguide segment 2 simultaneously；
The axis of this 2 twisted waveguide sections 5 for being located at the one end of waveguide segment 2 simultaneously overlaps；This 2 torsional waves for being located at the one end of waveguide segment 2 simultaneously
It is in X shapes arranged in a crossed manner and abut against to lead after the section of a twisted waveguide in section 55 is rotated about the axis thereof with another twisted waveguide section 5
Rise；This 2 twisted waveguide sections 5 for being located at the one end of waveguide segment 2 simultaneously constitute twisted waveguide section group；Same most shortwave is led in periodic structure, Y
The one end of the U-bend waveguide 4 of axle side is directly connected with waveguide segment 2；The one end of the U-bend waveguide 4 of Y-axis opposite side is direct
It is connected with twisted waveguide section 5；And in the whole double ridge torsional folded waveguides of twisted waveguide combination type, adjacent 2 twisted waveguides section group
Y-axis both sides are located at respectively.More than we illustrate several embodiments of the double ridge torsional folded waveguides of twisted waveguide combination type.
In these examples, in order to draw the convenience of schematic diagram, the periodicity of the double ridge torsional folded waveguides of twisted waveguide combination type is
3-6.In fact, in electromagnetic wave source, particularly in travelling-wave tubes, the week of the double ridge torsional folded waveguides of twisted waveguide combination type
Issue can up to tens.Meanwhile, in the embodiment more than, turned round to process the double ridge rectangles of these twisted waveguide combination types
Turn folded waveguide, it is necessary to take the processing methods such as wire cutting, number numerical-control turn-milling, many interior angles need chamfered.These chamferings
Influence can be produced on the performance of the double ridge torsional folded waveguides of twisted waveguide combination type, must be taken in Modeling Calculation.
Claims (10)
1. double ridge torsional folded waveguides of a kind of twisted waveguide combination type, it is characterised in that including being sequentially communicated simultaneously along Z-direction
At least 2 most shortwaves for repeating lead periodic structure and input and output waveguide（1）;The most shortwave is led periodic structure and is referred in Z-direction
The length most short waveguide cycle；X-axis, Y-axis and Z axis form right angle coordinate system simultaneously meet the right-hand rule；O points are coordinate origin；
Adjacent 2 most shortwaves are led periodic structure and are directly connected to；Each most shortwave leads periodic structure at least includes 2 respectively positioned at Y-axis
The U-bend waveguide of both sides（4）；The recess of U-bend waveguide is towards Y-axis；Same most shortwave leads 2 U-bend ripples in periodic structure
Lead（4）Connected using waveguide segment structure；One U-bend waveguide（4）One end and another U-bend waveguide（4）One end between
Connected using waveguide segment structure；Each described waveguide segment structure includes a waveguide segment being located in Y-axis（2）With 2 simultaneously
Positioned at waveguide segment（2）The twisted waveguide section of one end（5）；This 2 are located at waveguide segment simultaneously（2）The twisted waveguide section of one end（5）Axis
Overlap；This 2 are located at waveguide segment simultaneously（2）The twisted waveguide section of one end（5）In a twisted waveguide section（5）After rotating about the axis thereof
With another twisted waveguide section（5）It is arranged in a crossed manner in X shapes and be abutted against together；This 2 are located at waveguide segment simultaneously（2）The torsional wave of one end
Lead section（5）Composition twisted waveguide section group；Same most shortwave is led in periodic structure, the U-bend waveguide of Y-axis side（4）One end it is straight
Connect 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 it is whole
In the double ridge torsional folded waveguides of twisted waveguide combination type, adjacent 2 twisted waveguides section group is located at Y-axis both sides respectively；It is described most
The both ends of the surface that shortwave leads periodic structure are all parallel with YZ planes；The both ends of the surface that the most shortwave leads periodic structure are double ridge square waves
Lead；The broadside that any most shortwave leads any end face in the both ends of the surface of periodic structure is parallel with Y direction, described pair of ridge square
Double ridges of shape waveguide are respectively on two broadsides of the waveguide；Twisted waveguide section（5）It is stacked together and is connected by least 3
Through hole（51）Composition.
2. double ridge torsional folded waveguides of a kind of twisted waveguide combination type according to claim 1, it is characterised in that exist
The one straight line AB, the straight line AB parallel with Z axis and described any one most shortwave do not lead the common factor of periodic structure for two mutually not
The continuous line segment CD and line segment EF being joined directly together.
3. double ridge torsional folded waveguides of a kind of twisted waveguide combination type according to claim 2, it is characterised in that deposit
In at least one straight line electron beam passage parallel to Z axis（7）；The straight line electron beam passage（7）Overlapped with the straight line AB；
The line segment CD leads the maximum amplitude point of the electric-field intensity of electromagnetic wave in periodic structure by the most shortwave.
4. double ridge torsional folded waveguides of a kind of twisted waveguide combination type according to claim 2, it is characterised in that when
The frequency of electromagnetic wave close to the mode of operation of the folded waveguide cut-off frequency when, the straight line AB with it is described any one most
The direction that shortwave leads the electric field of the electromagnetic wave at two common factors of periodic structure is identical.
5. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 1, it is characterised in that institute
State twisted waveguide section（5）The tangent plane for crossing plane A is plane of mirror symmetry；Plane A be one it is parallel with YZ planes and with a certain torsional wave
Lead section（5）Tangent face；Twisted waveguide section（5）Cross plane A tangent plane exist 2 mirror axis, this 2 mirror axis all with
Y-axis is in angle of 45 degrees；Twisted waveguide section（5）Plane A is crossed by least 3 through holes for being stacked together and connecting（51）Composition.
6. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 5, it is characterised in that institute
State 2 U-bend waveguides that each most shortwave is led in periodic structure（4）It is the U-bend waveguide of H faces.
7. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 5, it is characterised in that institute
State 2 U-bend waveguides that each most shortwave is led in periodic structure（4）It is the U-bend waveguide of E faces.
8. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 5, it is characterised in that institute
State twisted waveguide section（5）Both ends of the surface it is parallel to each other；The twisted waveguide section（5）The distance between both ends of the surface closed less than the twisted waveguide
And 0.2 times of the wavelength in the corresponding free space of center operating frequency of the double ridge torsional folded waveguides of formula.
9. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 5, it is characterised in that institute
State through hole（51）Shape of cross section be rectangle.
10. a kind of double ridge torsional folded waveguides of twisted waveguide combination type according to claim 9, it is characterised in that institute
State each rectangular through-hole（51）Connected by its adjacent edge.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159403A (en) * | 2016-08-29 | 2016-11-23 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type tiltedly turns round the double ridge rectangle folded waveguide of coupling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159403A (en) * | 2016-08-29 | 2016-11-23 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type tiltedly turns round the double ridge rectangle folded waveguide of coupling |
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