CN106252809A - A kind of twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide - Google Patents
A kind of twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide Download PDFInfo
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- CN106252809A CN106252809A CN201610745739.4A CN201610745739A CN106252809A CN 106252809 A CN106252809 A CN 106252809A CN 201610745739 A CN201610745739 A CN 201610745739A CN 106252809 A CN106252809 A CN 106252809A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/10—Wire waveguides, i.e. with a single solid longitudinal conductor
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P9/00—Delay lines of the waveguide type
- H01P9/006—Meander lines
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Abstract
The invention discloses a kind of twisted waveguide separate type and tiltedly turn round coupling rectangular folded waveguide, lead periodic structure and input and output waveguide (1) including at least 2 be sequentially communicated along Z-direction shortwave.Twisted waveguide separate type is tiltedly turned round coupling rectangular folded waveguide and is consisted of some U-bend waveguides, twisted waveguide section and straight wave guide.When applying in travelling-wave tube isoline electromagnetic wave vacuum device, compared with traditional folded waveguide, the 180 degree of differences brought due to U-bend waveguide existed when instant invention overcomes electron beam by traditional slow-wave structure, can be advantageously in the bandwidth of operation of broadening electromagnetic wave source.Meanwhile, the present invention can make the number of straight line electron beam passage increase to 2 at most roots, can significantly improve bundle ripple interaction efficiency.This twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide can realize the compact delay line of various waveguide, single ridged waveguides or double ridged waveguide, the particularly slow-wave structure etc. of compact travelling-wave tube amplifier.
Description
Technical field
The present invention relates to a kind of electromagnetic transmission line.Specifically, one is related to for signal delay or electromagnetic wave source
The compact twisted waveguide separate type of slow-wave structure tiltedly turn round coupling rectangular folded waveguide.
Background technology
First important application of folded transmission lines is as signal delay line, prolongs for signal in the systems such as radar
Late.Second important application of folded transmission lines is to use 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 propagating 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 this straight line electron passage, electron beam
The phase velocity of the electromagnetic wave experienced can be well below the light velocity.The beam energy using the travelling-wave tube of folded transmission lines composition can
To be substantially reduced, the beneficially miniaturization of device.
Traditional folded transmission lines typically uses transmission line continuous bend to form.Such as waveguide delay line is by waveguide bend
Stack.Owing to too small bending curvature radius will cause the reflection of signal, the volume of this delay line is the biggest.Fold
Common slow-wave structure in waveguide travelling-wave tube amplifier uses rectangular waveguide section the most alternately to connect and compose with U-shaped waveguide end,
There is bulky problem equally.Another problem that common folded waveguide travelling-wave tube exists is bandwidth problem.This travelling-wave tube
The folded waveguide of middle employing is generally two-dimensional structure, and waveguide is in a plane crossing Z axis, continuous bend in such as XZ plane.?
In this folded waveguide, the electronics propagated along Z axis when by the folded waveguide in a cycle, have two mutual with electromagnetic wave
The region of effect.In the two interaction region, the phase contrast of the electromagnetic wave that the electron beam of transmission is experienced removes electromagnetic wave edge
Outside the phase contrast that the bending approach transmission of this folded waveguide is determined, also include 180 degree of bending waveguides causes due to transmission line
The what is called " Shape-phase is poor " of reversely determined 180 degree of electromagnetic field direction.The existence of this Shape-phase difference so that along Z axis
The electron beam that direction is propagated and the electromagnetic wave propagated along folded waveguide are under the conditions of the speed sync of Z-direction, at 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 son bundle obtains is cancelled out each other.In order to solve this problem, electron beam is along speed and the electromagnetic wave of Z-direction along Z-direction
Average phase velocity must mismatch.Thus bring the serious of the relative bandwidth to folded waveguide travelling-wave tube to limit.
Summary of the invention
It is an object of the invention to provide a kind of twisted waveguide separate type not having Shape-phase difference and tiltedly turn round coupling rectangular folding ripple
Lead.The features such as this scheme has simple in construction, easy to process, operating frequency width, compact conformation.
To achieve these goals, our scheme is, tiltedly turns round coupling twisted waveguide separate type and tiltedly turns round coupling rectangular folding ripple
Lead, lead periodic structure including at least 2 shortwaves being sequentially communicated along Z-direction and repeat, also include input and output waveguide.
There is a straight line AB parallel with Z axis, described straight line AB and any one shortwave described leads the friendship of periodic structure
Collection is two continuous line segment CD not being joined directly together mutually and line segment EF.
There is at least straight line electron beam passage being parallel to Z axis；Described straight line electron beam passage and described straight line AB
Overlap；Described line segment CD leads the maximum amplitude point of the electric field intensity of electromagnetic wave in periodic structure by described shortwave.
The both ends of the surface that described shortwave leads periodic structure are all parallel with YZ plane；Described shortwave leads periodic structure
Both ends of the surface be shaped as rectangle, the broadside of the both ends of the surface that described arbitrary shortwave leads periodic structure is all parallel with Y direction.
Or, the both ends of the surface that described shortwave leads periodic structure are all parallel with YZ plane；Described shortwave leads periodic structure
Both ends of the surface be single ridge rectangular waveguide；The broadside of described arbitrary any end face during shortwave leads the both ends of the surface of periodic structure and Y
Direction of principal axis is parallel, and the ridge of described single ridge rectangular waveguide is positioned on a broadside of this waveguide.
Or, the both ends of the surface that described shortwave leads periodic structure are all parallel with YZ plane；Described shortwave leads periodic structure
Both ends of the surface be double ridge rectangular waveguides；The broadside of described arbitrary any end face during shortwave leads the both ends of the surface of periodic structure and Y
Direction of principal axis is parallel, and double ridges of described pair of ridge rectangular waveguide lay respectively on two broadsides of this waveguide.
Tiltedly turn round unlike coupling rectangular folded waveguide from traditional twisted waveguide separate type, when the frequency of electromagnetic wave is close to institute
During the cut-off frequency of the mode of operation stating folded waveguide, described straight line AB and any one shortwave described lead the two of periodic structure
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 tube
In, due to the existence of so-called Shape-phase difference, the electric field of corresponding electromagnetic wave in opposite direction.
Shortwave leads cycle preferred scheme one: adjacent 2 shortwaves are led periodic structure and are directly connected to, each shortwave
Lead periodic structure and at least include 2 U-bend waveguides laying respectively at Y-axis both sides, the recess of U-bend waveguide towards Y-axis, same
Shortwave is led 2 U-bend waveguides in periodic structure and is used waveguide segment structure to connect, one end of a U-bend waveguide and another U
Using waveguide segment structure to connect between one end of shape waveguide bend, each described waveguide segment structure includes that one is positioned in Y-axis
Waveguide segment and 2 twisted waveguide sections laying respectively at waveguide segment both sides, twisted waveguide section is positioned at end and the waveguide segment end of U-bend waveguide
Gap location between face.
Shortwave leads cycle preferred scheme two: adjacent 2 shortwaves are led periodic structure and are directly connected to；Each shortwave
Lead periodic structure and at least include 2 U-bend waveguides laying respectively at Y-axis both sides, the recess of U-bend waveguide towards Y-axis, same
Shortwave is led 2 U-bend waveguides in periodic structure and is used waveguide segment structure to connect, one end of a U-bend waveguide and another U
Using waveguide segment structure to connect between one end of shape waveguide bend, each described waveguide segment structure includes that one is positioned in Y-axis
Waveguide segment and 2 twisted waveguide sections being simultaneously positioned at waveguide segment one end, the axle of these 2 the twisted waveguide sections being simultaneously positioned at waveguide segment one end
Line is that X shape is arranged in a crossed manner and abut against together, these 2 the twisted waveguide sections composition twisted waveguide section groups being simultaneously positioned at waveguide segment one end；
Same 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 opposite side
The one end of U-bend waveguide is directly connected with twisted waveguide section, and whole twisted waveguide separate type is tiltedly turned round in coupling rectangular folded waveguide,
2 adjacent twisted waveguide section groups lay respectively at Y-axis both sides.
Twisted waveguide section is stacked together by least 3 and the through hole that connects forms.Concrete, described twisted waveguide section crosses plane
The tangent plane of A is plane of mirror symmetry；Plane A is parallel with YZ plane and tangent with an a certain twisted waveguide section face；Twisted waveguide
Section is crossed the tangent plane of plane A and be there are 2 mirror axis, and these 2 mirror axis are all with Y-axis in angle of 45 degrees；Twisted waveguide section mistake
Plane A is stacked together by least 3 and the through hole that connects forms.
It is the U-bend waveguide of H face that described each shortwave leads 2 U-bend waveguides in periodic structure.
It is the U-bend waveguide of E face that described each shortwave leads 2 U-bend waveguides in periodic structure.
The both ends of the surface of described twisted waveguide section are parallel to each other；Distance between the both ends of the surface of described twisted waveguide section is less than this torsional wave
Lead separate type and tiltedly turn round 0.2 times of the wavelength in the free space that the center operating frequency of coupling rectangular folded waveguide is corresponding.
For the ease of Modeling Calculation, the shape of cross section of described through hole is rectangle.
Described each rectangular through-hole is connected by its adjacent edge.
Coupling rectangular folded waveguide coupling in wide-band, described 2 U-shapeds are tiltedly turned round in order to improve this twisted waveguide separate type
At least one form parameter of the cross section of waveguide bend and/or 2 waveguide segments tiltedly turns round coupling rectangular folding with this twisted waveguide separate type
The change relatively of the centrage of folded waveguide is more than 10%.Otherwise, described shortwave lead periodic structure to repeat to connect structure along Z-direction
Become twisted waveguide separate type tiltedly turn round coupling rectangular folded waveguide some Frequency point may because of reflection superposition cause electromagnetic wave without
Method is propagated smoothly.Here described twisted waveguide separate type tiltedly turns round the centrage of coupling rectangular folded waveguide by by electromagnetic wave signal
The maximum field intensity amplitude point in coupling rectangular folded waveguide is tiltedly turned round in this twisted waveguide separate type.
Tiltedly turn round coupling twisted waveguide separate type and tiltedly turn round coupling rectangular folded waveguide by using twisted waveguide to overcome tradition to fold ripple
The Shape-phase led is poor, and method is to allow waveguide while doing 180 degree of bendings, and the E field polarization direction of electromagnetic wave also completes 180
The rotation of degree.
A kind of situation, it is the U-bend waveguide of H face that described each shortwave leads 2 U-bend waveguides in periodic structure；Described
It is interconnected by U-bend waveguide or waveguide segment between 4 twisted waveguide sections.
Another kind of situation, each two twisted waveguide is connected directly to each other composition one group.The twisted waveguide that said two is joined directly together
The straight line that the spaced winding one of section is parallel to X-axis is angled, is optimal with 60 degree.By a U-bend between two groups of twisted waveguides
Waveguide is connected with an E face U-bend waveguide.
The present invention proposes employing rectangular waveguide, single ridged waveguides, double ridged waveguide or the various cycles of other shapes of waveguide
Property twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide.On the basis of existing traditional folded waveguide, solve well
Broadband stationary problem between electron beam and electromagnetic wave that Shape-phase difference band comes.This invention is also used as compact letter
Number delay line.This twisted waveguide separate type is used tiltedly to turn round the interaction waveguide as travelling-wave tube of the coupling rectangular folded waveguide, it is expected to big
Reduce greatly the beam energy needed for high-frequency microwave, millimeter wave, even THz devices its bandwidth of operation of broadening.Particularly adopt
It is expected to be operated in ultra wide band frequency with the travelling-wave tube tiltedly turning round coupling folded ridge waveguide.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 1 of the present invention；
Fig. 2 is that the shortwave of embodiment 1 of the present invention leads periodic structure schematic diagram；
Fig. 3 is the twisted waveguide schematic diagram of embodiment 1 of the present invention；
Fig. 4 is the H face U-shaped ridge waveguide schematic diagram of embodiment 1 of the present invention；
Fig. 5 is the schematic diagram of embodiment 2 of the present invention；
Fig. 6 is that a shortwave of embodiment 2 of the present invention leads periodic structure schematic diagram；
Fig. 7 is the schematic diagram of embodiment 3 of the present invention；
Fig. 8 is that the shortwave of embodiment 3 of the present invention leads periodic structure schematic diagram；
Fig. 9 is two twisted waveguide schematic diagrams interconnected of embodiment 3 of the present invention；
Label correspondence title in accompanying drawing: 1-input and output waveguide, 2-waveguide segment, 4-U shape waveguide bend, 5-twisted waveguide section, 51-leads to
Hole, 7-straight line electron beam passage.
Embodiment 1
As Figure 1-4.
A kind of twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide, including be sequentially communicated along Z-direction and repeat 4
Individual shortwave leads periodic structure and input and output waveguide 1.Adjacent 2 shortwaves are led periodic structure and are directly connected to, and each is the shortest
Waveguide periodic structure at least includes 2 U-bend waveguides 4 laying respectively at Y-axis both sides, and the recess of U-bend waveguide is towards Y-axis, same
One 2 U-bend waveguides 4 that shortwave is led in periodic structure use waveguide segment structure to connect, one end of a U-bend waveguide 4 with
Using waveguide segment structure to connect between one end of another U-bend waveguide 4, each described waveguide segment structure includes that one is positioned at
Waveguide segment 2 in Y-axis and 2 twisted waveguide sections 5 laying respectively at waveguide segment 2 both sides, twisted waveguide section 5 is positioned at the end of U-bend waveguide 4
Gap location between portion and waveguide segment 2 end face.
It is plane of mirror symmetry that described twisted waveguide section 5 crosses the tangent plane of plane A, and plane A is the face parallel with YZ plane, torsional wave
There are 2 axis of symmetry in the tangent plane of the section of leading 5, all with Y-axis in angle of 45 degrees, tangent plane is stacked together these 2 axis of symmetry by least 3
And the through hole 51 connected forms.
There is a straight line AB parallel with Z axis, described straight line AB and any one shortwave described leads the friendship of periodic structure
Collection is two continuous line segment CD not being joined directly together mutually and line segment EF.
There is a straight line electron beam passage 7 being parallel to Z axis；Described straight line electron beam passage 7 is parallel with Z axis；Described
Straight line electron beam passage 7 leads the maximum amplitude point of the electric field intensity of electromagnetic wave in periodic structure by described shortwave.
The both ends of the surface that described shortwave leads periodic structure are all parallel with YZ plane；Described shortwave leads the two ends of periodic structure
Face is double ridge rectangular waveguides；The broadside of described arbitrary any end face during shortwave leads the both ends of the surface of periodic structure and Y direction
Parallel, double ridges of described pair of ridge rectangular waveguide lay respectively on two broadsides of this waveguide.
When the frequency of electromagnetic wave is close to the cut-off frequency of the mode of operation of described folded waveguide, Z axis is any one with described
The direction of the electric field that individual shortwave leads the electromagnetic wave at two common factors of periodic structure is identical.
Each shortwave is led periodic structure and is included 2 U-bend waveguides 4 and 2 waveguide segments 2.
Each shortwave is led periodic structure and is also included at least 4 twisted waveguide sections 5.
The cross section of described twisted waveguide section 5 is specular, and the normal direction of its plane of symmetry is parallel with YZ plane, and with
Y-axis is in angle of 45 degrees.
The cross section of described twisted waveguide section 5 has two mutually perpendicular mirror symmetry planes；At least one of which specular
The normal direction in face becomes 45 degree of angles with Y-axis.
It is H face U-bend waveguide 4 that described each shortwave leads 2 the U-bend waveguides 4 in periodic structure；Described 4 torsional waves
It is interconnected by U-bend waveguide 4 or waveguide segment 2 between the section of leading 5.
The cross section of described twisted waveguide section 5 is made up of at least 3 through holes connected in a certain direction 51.
The both ends of the surface of described twisted waveguide section 5 are parallel to each other；Distance between the both ends of the surface of described twisted waveguide section 5 is less than this torsion
Waveguide separate type tiltedly turns round 0.2 times of the wavelength in the free space that the center operating frequency of coupling rectangular folded waveguide is corresponding.
The shape of cross section of described through hole 51 is rectangle.
Described each rectangular through-hole 51 is connected by its adjacent edge.
The height of the metal ridge of described 2 U-bend waveguides 4 and 2 waveguide segments tiltedly turns round coupling moment with this twisted waveguide separate type
The change relatively of the centrage of shape folded waveguide is more than not shown in 10%(figure).
Described straight line AB with described any one shortwave leads the common factor of periodic structure is two companies not being joined directly together mutually
Continuous line segment CD and line segment EF.It is to say, straight line electron beam passage 7 leads periodic structure with shortwave two intersections
Territory.
When the frequency of electromagnetic wave is close to the cut-off frequency of the mode of operation of described folded waveguide, described straight line AB is with described
The direction of any one electric field that shortwave leads electromagnetic wave at two common factors of periodic structure is identical.
Each shortwave is led periodic structure and is included 2 U-bend waveguides 4 and 2 waveguide segments 2.Each shortwave leads week
Phase structure also includes 4 twisted waveguide sections 5.
The cross section of described twisted waveguide section 5 is specular, and the normal direction of its mirror symmetry planes is parallel with YZ plane, and
And with Y-axis in angle of 45 degrees.
The cross section of described twisted waveguide section 5 has two mutually perpendicular mirror symmetry planes；The wherein method of 2 mirror symmetry planes
Line direction becomes 45 degree of angles with Y-axis.Preferably designing, the normal direction of two mutually perpendicular mirror symmetry planes becomes with Y-axis respectively
45 degree of angles and-45 degree angles.
Described twisted waveguide section be cross section be that one section of shortwave of definite shape is led: the twisted waveguide section 5 of described twisted waveguide section 5 by
At least 3 through holes being stacked together and connecting 51 form.Concrete, it is mirror image pair that described twisted waveguide section 5 crosses the tangent plane of plane A
Claim plane；Plane A is parallel with YZ plane and tangent with a certain twisted waveguide section 5 face；Twisted waveguide section 5 crosses cutting of plane A
There are 2 mirror axis in face, these 2 mirror axis are all with Y-axis in angle of 45 degrees；Twisted waveguide section 5 crosses plane A by least 3
The individual through hole 51 being stacked together and connect forms.
Distance between the both ends of the surface of described twisted waveguide section 5 tiltedly turns round coupling rectangular folded waveguide less than this twisted waveguide separate type
Free space corresponding to center operating frequency in 0.2 times of wavelength.
The shape of cross section of the described through hole 51 constituting twisted waveguide section 5 is rectangle.
Described each rectangular through-hole 51 is connected by its adjacent edge.
It is H face U-bend waveguide 4 that described each shortwave leads 2 the U-bend waveguides 4 in periodic structure；Described 4 torsional waves
It is interconnected by U-bend waveguide 4 or waveguide segment 2 between the section of leading 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 shortwave is led periodic structure and is included 2 H face rectangular waveguide U-bend waveguides 4 and 2 rectangular waveguide sections 2.
Input and output waveguide is rectangular waveguide.
Embodiment 3
As Figure 7-9.
Compared with embodiment 1, the difference is that only:
Leading in periodic structure at each shortwave, each two twisted waveguide is connected directly to each other composition one group.Two groups of twisted waveguides it
Between be not joined directly together mutually.The double ridge waveguide bend 4 of U-shaped is the double ridge U-bend waveguide 4 in E face.Concrete, adjacent 2 shortwaves lead cycle knot
Structure is directly connected to；Each shortwave is led periodic structure and is at least included 2 U-bend waveguides 4 laying respectively at Y-axis both sides, U-bend
The recess of waveguide is towards Y-axis, and 2 U-bend waveguides 4 that same shortwave is led in periodic structure use waveguide segment structure to connect, and one
Waveguide segment structure is used to be connected between one end and one end of another U-bend waveguide 4 of individual U-bend waveguide 4, each described ripple
Leading segment structure and include a waveguide segment being positioned in Y-axis 2 and 2 twisted waveguide sections 5 being simultaneously positioned at waveguide segment 2 one end, these 2 same
Time be positioned at waveguide segment 2 one end the axis of twisted waveguide section 5 be that X shape is arranged in a crossed manner and abut against together, these 2 are positioned at waveguide simultaneously
The twisted waveguide section 5 of section 2 one end forms twisted waveguide section group；Same shortwave is led in periodic structure, the U-bend waveguide 4 of Y-axis side
One end is directly connected with waveguide segment 2, and the one end of the U-bend waveguide 4 of Y-axis opposite side is directly connected with twisted waveguide section 5, and whole
Individual twisted waveguide separate type is tiltedly turned round in coupling rectangular folded waveguide, and 2 adjacent twisted waveguide section groups lay respectively at Y-axis both sides.
More than we illustrate twisted waveguide separate type and tiltedly turn round several embodiments of coupling rectangular folded waveguide.Real at these
In example, in order to draw the convenience of schematic diagram, it is 3-6 that twisted waveguide separate type tiltedly turns round the periodicity of coupling rectangular folded waveguide.Real
On border, at electromagnetic wave source, particularly in travelling-wave tube, the periodicity that twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide is permissible
Up to tens.Meanwhile, in above embodiment, tiltedly turn round coupling rectangular folding ripple to process these twisted waveguide separate types
Leading, need to take the processing method such as line cutting, number numerical-control turn-milling, many interior angles need chamfered.These chamferings can be to torsional wave
Lead separate type and tiltedly turn round the performance generation impact of coupling rectangular folded waveguide, must take in when Modeling Calculation.
Claims (10)
1. a twisted waveguide separate type tiltedly turns round coupling rectangular folded waveguide, it is characterised in that include being sequentially communicated also along Z-direction
At least 2 shortwaves repeated lead periodic structure and input and output waveguide (1);Described shortwave is led periodic structure and is referred in Z-direction
The waveguide cycle that length is the shortest；X-axis, Y-axis and Z axis form right angle coordinate system also meet the right-hand rule；O point is coordinate origin；
Adjacent 2 shortwaves are led periodic structure and are directly connected to, and each shortwave is led periodic structure and at least included that 2 lay respectively at Y-axis
The U-bend waveguide (4) of both sides；The recess of U-bend waveguide is towards Y-axis；Same shortwave leads 2 U-bend ripples in periodic structure
Leading (4) uses waveguide segment structure to connect；Between one end and one end of another U-bend waveguide (4) of one U-bend waveguide (4)
Waveguide segment structure is used to connect；Each described waveguide segment structure includes a waveguide segment being positioned in Y-axis (2) and 2 difference
It is positioned at the twisted waveguide section (5) of waveguide segment (2) both sides；Twisted waveguide section (5) is positioned at the end of U-bend waveguide (4) and holds with waveguide segment (2)
Gap location between face；The both ends of the surface that described shortwave leads periodic structure are all parallel with YZ plane；Described shortwave leads week
The both ends of the surface of phase structure be shaped as rectangle；Described arbitrary shortwave lead the broadside of the both ends of the surface of periodic structure all with Y direction
Parallel；；Twisted waveguide section (5) is stacked together by least 3 and the through hole (51) that connects forms.
A kind of twisted waveguide separate type the most according to claim 1 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that exist
The one straight line AB parallel with Z axis, described straight line AB with described any one shortwave lead the common factor of periodic structure be two the most not
The continuous line segment CD being joined directly together and line segment EF.
A kind of twisted waveguide separate type the most according to claim 2 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that deposit
At at least straight line electron beam passage (7) being parallel to Z axis；Described straight line electron beam passage (7) overlaps with described straight line AB；
Described line segment CD leads the maximum amplitude point of the electric field intensity of electromagnetic wave in periodic structure by described shortwave.
A kind of twisted waveguide separate type the most according to claim 2 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that when
When the frequency of electromagnetic wave is close to the cut-off frequency of the mode of operation of described folded waveguide, described straight line AB with described any one
The direction of the electric field that shortwave leads the electromagnetic wave at two common factors of periodic structure is identical.
A kind of twisted waveguide separate type the most according to claim 1 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that institute
The tangent plane stating twisted waveguide section (5) plane A excessively is plane of mirror symmetry；Plane A be one parallel with YZ plane and with a certain torsional wave
The face that the section of leading (5) is tangent；Twisted waveguide section (5) cross plane A tangent plane exist 2 mirror axis, these 2 mirror axis all with
Y-axis is in angle of 45 degrees；Twisted waveguide section (5) is crossed plane A and is stacked together by least 3 and the through hole (51) that connects forms.
A kind of twisted waveguide separate type the most according to claim 5 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that institute
Stating 2 U-bend waveguides (4) that each shortwave leads in periodic structure is the U-bend waveguide of H face.
A kind of twisted waveguide separate type the most according to claim 5 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that described
2 U-bend waveguides (4) that each shortwave is led in periodic structure are the U-bend waveguide of E face.
A kind of twisted waveguide separate type the most according to claim 5 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that described
The both ends of the surface of twisted waveguide section (5) are parallel to each other；Distance between the both ends of the surface of described twisted waveguide section (5) separates less than this twisted waveguide
Formula tiltedly turns round 0.2 times of the wavelength in the free space that the center operating frequency of coupling rectangular folded waveguide is corresponding.
A kind of twisted waveguide separate type the most according to claim 5 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that institute
The shape of cross section stating through hole (51) is rectangle.
A kind of twisted waveguide separate type the most according to claim 9 tiltedly turns round coupling rectangular folded waveguide, it is characterised in that institute
State each rectangular through-hole (51) to be connected by its adjacent edge.
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- 2016-08-29 CN CN201610745739.4A patent/CN106252809A/en not_active Withdrawn
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Application publication date: 20161221 |