CN208939147U - A polarization converter that deflects the polarization of electromagnetic waves in any direction by 90 degrees - Google Patents
A polarization converter that deflects the polarization of electromagnetic waves in any direction by 90 degrees Download PDFInfo
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- CN208939147U CN208939147U CN201822011828.3U CN201822011828U CN208939147U CN 208939147 U CN208939147 U CN 208939147U CN 201822011828 U CN201822011828 U CN 201822011828U CN 208939147 U CN208939147 U CN 208939147U
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- 230000010287 polarization Effects 0.000 title claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 239000004809 Teflon Substances 0.000 claims abstract description 8
- 229920006362 Teflon® Polymers 0.000 claims abstract description 8
- 239000012212 insulator Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract 7
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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Abstract
一种使任意方向电磁波极化偏转90度的极化转化器，包括20乘20个周期性排列的谐振单元，采用立体的人工电磁结构，用于将任意入射方向电磁波的极化角度偏转90度；每个谐振单元包括4根相同结构但排列方向不同的柱体，金属地基板和填充在铜基板中的绝缘体铁氟龙；4根结构相同但排列方向不同的柱体分别为第一柱体、第二柱体、第三柱体以及第四柱体；第一柱体包括两根第一L形柱体和第二L型柱体，第二柱体的排列方向与第一柱体逆时针旋转90度后的方向一致，第三柱体的排列方向与第二柱体逆时针旋转90度后的方向一致，第四柱体的排列方向与第三柱体逆时针旋转90度后的方向一致；比传统的极化转换器，结构简单，适应任意入射角度，损耗小，效率高。
A polarization converter capable of deflecting the polarization of electromagnetic waves in any direction by 90 degrees, including 20 by 20 periodically arranged resonant units, using a three-dimensional artificial electromagnetic structure, for deflecting the polarization angle of electromagnetic waves in any direction by 90 degrees ;Each resonance unit includes 4 pillars with the same structure but different arrangement directions, a metal ground substrate and an insulator Teflon filled in the copper substrate; 4 pillars with the same structure but different arrangement directions are the first pillars respectively , the second cylinder, the third cylinder and the fourth cylinder; the first cylinder includes two first L-shaped cylinders and a second L-shaped cylinder, and the arrangement direction of the second cylinder is opposite to that of the first cylinder The direction after rotating 90 degrees clockwise is the same, the arrangement direction of the third cylinder is the same as the direction after the second cylinder is rotated 90 degrees counterclockwise, and the arrangement direction of the fourth cylinder is the same as that after the third cylinder is rotated 90 degrees counterclockwise. The direction is the same; compared with the traditional polarization converter, the structure is simple, suitable for any incident angle, the loss is small, and the efficiency is high.
Description
Technical field
The utility model belongs to electromagnetic technology field, and in particular to a kind of to turn 90 degrees any direction polarization of ele partially
Polarize converter.
Background technique
Manual electromagnetic structure is the artificial structure with special electromagnetic characteristic, is manually tied by the sub-wavelength of geometry in particular
Structure basic unit is aperiodic or periodic arrangement is constituted.At present about the physical characteristic research of manual electromagnetic structure, and its orienting
Radiate the application in the fields such as high performance antenna, electromagnetism stealth, space communication, Detection Techniques and novel terahertz wave band function element
Research starts to become the research hotspot of international physics and electromagnetism educational circles.
Polarization of ele is defined as the motion profile of electric field intensity end spaces, and the control to polarization of ele is electromagnetic wave
The important component of spatial research.Different polarization modes are applied to different occasions.Polarization of electromagnetic wave characteristic is in satellite
Communication, radar receives anti-interference, aerospace, military, fields and the side such as medical treatment and target acquisition, identification, coding, sampling
It is used widely in.
When linear polarised electromagnetic wave is propagated in free space, due to the complexity of space environment, can generate scattering, refraction and
The effects such as diffraction, to change polarization of electromagnetic wave direction.When the polarization direction of polarization of electromagnetic wave direction and receiving antenna not
When consistent, receiving efficiency can be reduced, and when the polarization direction of the two is orthogonal, antenna does not almost receive electromagnetic signal then.It will
Receive polarizations direction deflect into receiving polarization direction, can make antenna have optimum reception efficiency.Traditional polarization
Converter transfer efficiency is low, be only applicable in single electromagnetic wave incident direction, structure is complicated, thickness is thicker, is unable to satisfy present communication
The requirement of system low distortion, wide adaptability, low section reduces the validity and integrated level of communication system.Therefore, it designs suitable
For any electromagnetic energy incident direction, efficient polarization conversion device ever more important, the utility model utilizes a kind of solid
A kind of polarization converter has been made in manual electromagnetic structure, overcomes drawbacks described above well.
Utility model content
The purpose of this utility model is that being proposed a kind of by any direction electromagnetic wave pole using stereoscopic artificial electromagnetic structure
Change the polarization converter turning 90 degrees partially, compared with traditional polarization converter, structure is simple, adapts to any incident angle degree, loss
It can ignore, it is high-efficient；A kind of polarization converter turning 90 degrees any direction polarization of ele partially, including 20 multiply 20 periods
Property arrangement resonant element, using three-dimensional manual electromagnetic structure, for any incident direction polarization of electromagnetic wave angle is inclined
It turn 90 degrees；Each resonant element includes 4 identical structures but the different cylinder of orientation, metal grade slab and is filled in copper-based
Insulator Teflon in plate；4 cylinders that root knot structure is identical but orientation is different are respectively the first cylinder, the second cylinder,
Three cylinders and the 4th cylinder；First cylinder includes two the first L shape cylinders and the second L-type cylinder, the first L shape cylinder and second
L-type cylinder specification is identical, the first L shape cylinder point perpendicular section and crosspiece, and the second L-type cylinder divides leading portion and back segment, and leading portion and crosspiece connect
It connects, the plane that back segment is formed by perpendicular to perpendicular section and crosspiece and leading portion is simultaneously connect with leading portion；First cylinder, the second cylinder,
Third cylinder and the 4th cylinder are located at the lower right corner, the upper right corner, the upper left corner and the lower left corner of metal grade slab, the second cylinder
Orientation be rotated by 90 ° counterclockwise with the first cylinder after direction it is consistent, the orientation of third cylinder and the second cylinder are inverse
Direction after hour hands are rotated by 90 ° is consistent, the orientation of the 4th cylinder and third cylinder be rotated by 90 ° counterclockwise after direction one
It causes.
Preferably, first cylinder, the second cylinder, third cylinder and the 4th cylinder are copper material.
Preferably, the first cylinder, the second cylinder, third cylinder and the 4th cylinder radius are 0.5mm.
Preferably, total height, that is, direction z height of first cylinder, the second cylinder, third cylinder and the 4th cylinder
Degree is 11.2mm, and it is 11mm that the length that section is erected in each cylinder is identical as the length that crosspiece adds back segment.
Preferably, the metal grade slab is copper metal grade slab, and volume multiplies 20mm for 20mm and multiplies 2mm.
Preferably, the relative dielectric constant 2.1 of the insulator Teflon, outer radius 1mm, inside radius 0.5mm, height
2mm。
Preferably, each resonant element only takes up 20mm and multiplies the volume that 20mm multiplies 11.2mm.
Preferably, the Parameter adjustable section of the resonant element, resonance frequency and working frequency points are adjustable.
The utility model has the beneficial effects that the utility model is compared with traditional polarization converter, using novel form
Manual electromagnetic structure can be realized 90 degree of polarization rotations to any direction linear polarised electromagnetic wave, and structure is simple and easy to process,
By adjusting each parameter size of resonant element, it may be convenient to realize for resonance frequency, the adjusting of working frequency points；This is practical
Each resonant element in novel, which only takes up 20mm and multiplies 20mm, multiplies 11.2mm, occupies volume very little, and right in Modern wireless communication
It is fine in the requirement compatible degree of device miniaturization；At central task frequency point 5.8GHz, for the linear polarization of arbitrary polarisation direction
Electromagnetic wave is able to achieve the conversion of the polarization direction higher than 99%, higher than traditional polarization converter, compensates for conventional polar converter
Transfer efficiency is lower, disadvantage to each incident angle energy polarization conversion performance difference；The utility model uses Conduction coupling, is
A kind of novel polarization conversion regime；Resonant element in the utility model is able to carry out cyclic extension, flexible structure, the amount of being easy to
It produces, has a good application prospect.
Detailed description of the invention
Fig. 1 is the total resonance array structural schematic diagram of the utility model；
Fig. 2 is resonant element front schematic view under the utility model；
Fig. 3 is the utility model the first cylinder schematic diagram；
Fig. 4 is for polarization conversion mechanism description figure；
When Fig. 5 is to be in 0 degree, 30 degree, 60 degree and 90 degree of electromagnetic wave incident with X-axis, the return loss characteristic of array
S11；
When Fig. 6 is to be in 0 degree, 30 degree, 60 degree and 90 degree of electromagnetic wave incident with X-axis, the efficiency of array polarization conversion.
1, the first cylinder；11, section is erected；12, crosspiece；13, leading portion；14, back segment；2, the second cylinder；3, third cylinder；4,
Four cylinders；5, insulator Teflon；6, metal grade slab；A, resonant element.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of embodiment as shown in figures 1 to 6, and one kind keeps any direction polarization of ele inclined
The polarization converter turning 90 degrees, the resonant element A for multiplying 20 periodic arrangements including 20, using three-dimensional manual electromagnetic structure,
For by any 90 degree of incident direction polarization of electromagnetic wave angular deflection, each resonant element A, which only takes up 20mm and multiplies 20mm, to be multiplied
The volume of 11.2mm, the Parameter adjustable section of resonant element A, resonance frequency and working frequency points are adjustable；Each resonant element A packet
4 identical structures but the different cylinder of orientation, metal grade slab 6 and the insulator Teflon 5 being filled in copper base are included,
Metal grade slab 6 is copper metal grade slab, and volume multiplies 20mm for 20mm and multiplies 2mm, the relative dielectric constant of insulator Teflon 5
2.1, outer radius 1mm, inside radius 0.5mm, height 2mm；4 cylinders that root knot structure is identical but orientation is different are respectively the first column
Body 1, the second cylinder 2, third cylinder 3 and the 4th cylinder 4, the first cylinder 1, the second cylinder 2, third cylinder 3 and the 4th column
Body 4 is copper material, and radius is 0.5mm；First cylinder 1 includes two the first L shape cylinders and the second L-type cylinder, the first L
Shape cylinder and the second L-type cylinder specification are identical, and the first L shape cylinder point perpendicular section 11 and crosspiece 12, the second L-type cylinder divide leading portion 13 He
Back segment 14, leading portion 13 are connect with crosspiece 12, the plane that back segment 14 is formed by perpendicular to perpendicular section 11 and crosspiece 12 and leading portion 13
And connect with leading portion 13, the first cylinder 1, the second cylinder 2, third cylinder 3 and the 4th cylinder 4 total height, that is, direction z height
Degree is 11.2mm, and it is 11mm that the length that section is erected in each cylinder is identical as the length that crosspiece adds back segment；First cylinder 1,
Two cylinders 2, third cylinder 3 and the 4th cylinder 4 are located at the lower right corner, the upper right corner, the upper left corner and the lower-left of metal grade slab 6
Angle, the direction after the orientation of the second cylinder 2 is rotated by 90 ° counterclockwise with the first cylinder 1 is consistent, the arrangement side of third cylinder 3
Consistent to the direction after being rotated by 90 ° counterclockwise with the second cylinder 2, the orientation of the 4th cylinder 4 and third cylinder 3 are counterclockwise
Direction after being rotated by 90 ° is consistent.
Polarization conversion mechanism are as follows: when 5.8GHz, arbitrary polarisation direction linear polarization energy-incident to structure front when, generate
Resonance generates high-intensitive surface current in the L-type copper post on structure two sides, and because of special arranged evenly, the surface electricity in copper post direction
The flow direction of stream will overleaf change, this makes electromagnetic energy during being transmitted to the back side from structure front, polarization side
It is deflected to 90 degree of completion.
The polarization conversion mechanism of the utility model is now described in detail by taking Fig. 4 as an example: Fig. 4 designates each under spherical coordinate system
The direction of reference axis；E indicates the incident electromagnetic wave of 5.8GHz, and it is in any included angle with X-axis, array is humorous at this time that direction, which is-Z axis,
It shakes, high-intensitive surface current is generated in L-type structure；Ex indicates wave along the component of X-axis, by the first cylinder 1 and the in Fig. 2
Three cylinders 3 are converted to complete polarization direction, and the component Ex ' after conversion is indicated；Ey indicates wave along the component of Y-axis, by Fig. 2
Structure 2 and 4 complete polarization direction conversion, component Ey ' after conversion indicates；By Ex ' and Ey ' synthesis, it is complete that wave can be obtained
Direction E ' after polarization direction conversion；By Fig. 4, E and E can be clearly found ' in 90 degree of angles, electromagnetic wave realizes 90
The polarization rotation of degree.
It is made that in fig. 5 and fig. and any incident direction electromagnetic wave conversion performance is verified, as shown in the figure, each
Under a direction, the return loss S11 of array is identical as transfer efficiency.This demonstrate that the electromagnetic wave incident of any angle is to array
When, polarization direction can be turn 90 degrees partially, and orthogonal thereto with incident direction, efficiency is more than 99%.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822011828.3U CN208939147U (en) | 2018-12-03 | 2018-12-03 | A polarization converter that deflects the polarization of electromagnetic waves in any direction by 90 degrees |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822011828.3U CN208939147U (en) | 2018-12-03 | 2018-12-03 | A polarization converter that deflects the polarization of electromagnetic waves in any direction by 90 degrees |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208939147U true CN208939147U (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822011828.3U Expired - Fee Related CN208939147U (en) | 2018-12-03 | 2018-12-03 | A polarization converter that deflects the polarization of electromagnetic waves in any direction by 90 degrees |
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| Country | Link |
|---|---|
| CN (1) | CN208939147U (en) |
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2018
- 2018-12-03 CN CN201822011828.3U patent/CN208939147U/en not_active Expired - Fee Related
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Address after: 210044 No. 69 Olympic Street, Jianye District, Nanjing City, Jiangsu Province Patentee after: Nanjing University of Information Science and Technology Address before: 211500 Yuting Square, 59 Wangqiao Road, Liuhe District, Nanjing City, Jiangsu Province Patentee before: Nanjing University of Information Science and Technology |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20211203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |