CN210957023U - High-performance electromagnetic wave polarization controller based on super surface - Google Patents
High-performance electromagnetic wave polarization controller based on super surface Download PDFInfo
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- CN210957023U CN210957023U CN201922162574.XU CN201922162574U CN210957023U CN 210957023 U CN210957023 U CN 210957023U CN 201922162574 U CN201922162574 U CN 201922162574U CN 210957023 U CN210957023 U CN 210957023U
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- 230000010287 polarization Effects 0.000 title claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 78
- 239000002184 metal Substances 0.000 claims abstract description 78
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000002344 surface layer Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000003989 dielectric material Substances 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000005388 cross polarization Methods 0.000 abstract description 12
- 238000002310 reflectometry Methods 0.000 abstract description 12
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 7
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 229940125730 polarisation modulator Drugs 0.000 abstract 3
- 239000000463 material Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses a high performance electromagnetic wave polarization modulator based on super surface is formed according to periodic continuation by the same unit of several in the coplanar. Each unit structure comprises a three-layer structure, wherein the bottom layer is a square metal film (3), the middle layer is a square medium (2), and the surface layer is of a metal structure. The surface metal structure consists of a metal elliptic sheet with a slit, four same metal rectangles (1-1) vertically arranged and two same metal rectangles (1-2) horizontally arranged. The utility model discloses a super surface reflection formula electromagnetic wave polarization modulator through carrying out optimal design to top layer metallic structure, this electromagnetic wave polarization modulator has higher cross polarization reflectivity to the linear polarization electromagnetic wave of vertical incidence in certain frequency section. The electromagnetic wave polarization regulator has the advantages of simple design, flexibility, changeability, small size, lower cost, high regulation efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of super-surface design, and particularly relates to a high-performance electromagnetic wave polarization regulator based on a super-surface.
Background
Polarization is one of important attributes of electromagnetic waves, and the polarization regulation and control technology has important research value in the field of electromagnetism and has wide application prospect in numerous fields such as communication, radar anti-interference and the like. The super surface can realize flexible and effective regulation and control of the characteristics of electromagnetic wave amplitude, phase, polarization mode and the like, and can be regarded as two-dimensional correspondence of the metamaterial. Compared with the traditional super-surface of the regulating element, the super-surface of the regulating element has the advantages of simple structural design, flexibility, changeability, small size, lower cost, high regulating efficiency and the like. In the invention, the surface metal structure of the super-surface electromagnetic wave polarization controller is optimally designed, so that the polarization controller with higher cross polarization reflectivity in a certain frequency band is obtained.
Disclosure of Invention
The invention aims to provide a high-performance electromagnetic wave polarization regulator based on a super surface, aiming at the defects of thicker and heavier traditional elements, higher cost, poorer regulation efficiency and the like for realizing polarization regulation at the present stage. Therefore, the surface metal structure of the super-surface reflection type electromagnetic wave polarization regulator is optimally designed, so that the cross polarization reflectivity of the element is improved in a certain frequency band. Cross-polarized reflectance is defined as Ryx（ω）=|S1y,1x（ω）|2In which S is1y,1xIs the S parameter.
The invention is realized in such a way that the high-performance electromagnetic wave polarization regulator based on the super surface comprises a plurality of polarization unit structures which are periodically arranged in the same plane.
Each unit structure comprises a three-layer structure, wherein the bottom layer is a square metal film, the middle layer is a square medium, and the surface layer is a metal structure. The size of the bottom layer square metal film is the same as that of the middle layer square medium. The surface metal structure unit consists of a metal elliptic sheet with a slit, four same metal rectangles (1-1) vertically arranged and two same metal rectangles (1-2) horizontally arranged. The surface metal structures are uniformly arranged into a planar array on the square medium.
Further, the slit width range of the metal elliptic sheet in the surface layer metal structure is I =0.22mm-0.27mm, and the included angle between the slit and the horizontal direction is 35 degrees. The center of the metal elliptic sheet is an O point, the O point is the center of the surface metal structure at the same time, and e and f are respectively the semishort axis and the semilong axis of the metal elliptic sheet.
Further, the geometrical parameters of the cell structure may be varied. a is the width of the horizontally placed metal rectangle, b is the length of the horizontally placed metal rectangle, c is the length of the vertically placed metal rectangle, d is the width of the vertically placed metal rectangle, and g and h are the side lengths of the square medium. The specific parameter ranges are as follows:
0.5mm≤a≤0.7mm，3.8mm≤b≤4.2mm，2mm≤c≤2.3mm，0.8mm≤d≤1.2mm，2.8mm≤e≤3.2mm 3.8mm≤f≤4.2mm，7mm≤g=h≤10mm。
further, O1、O2、O3、O4、O5、O6The centers of four same metal rectangles (1-1) vertically placed and two same metal rectangles (1-2) horizontally placed in the surface metal structure are respectively. The position of each metal rectangle is determined by the coordinates of its center. Center O points and O of surface metal structure1、O2、O3、O4、O5、O6The coordinates of (a) are: o (0,0), O1(-3.5mm,3.1mm)，O2(0,3.8mm) O3(3.5mm,3.1mm)，O4(-3.5mm,-3.1mm)，O5(0,-3.8mm)，O6(3.5mm,-3.1mm)。
Furthermore, the bottom layer square metal film and the surface layer metal structure can be made of gold, silver, copper, aluminum and the like, and the thickness range is 0.017 mm-0.035 mm.
Further, the intermediate dielectric material can be Taconic series dielectric material and has a thickness of 1 mm. The dielectric material has a dielectric constant in the range of 2 to 2.5 and a loss tangent in the range of 0.0009 to 0.0012.
Furthermore, the number of the repeated units of the unit structure of the super-surface-based high-performance electromagnetic wave polarization regulator during the horizontal and vertical periodic extension should be the same, i.e. a square-array periodic array structure should be formed.
Further, the invention also provides a design method of the super-surface-based high-performance electromagnetic wave polarization regulator, which comprises the following steps: the surface metal structures are uniformly arranged into a planar array and are positioned on the square medium, and the medium is positioned on the square metal copper film.
Compared with the traditional polarization regulating element, the invention has the following beneficial effects:
the invention overcomes the defects of thicker and heavier traditional elements, higher cost, poorer polarization regulation and control and the like, and has the advantages of simple structural design, flexibility, changeability, small size, lower cost, high regulation and control efficiency, easy processing and integration and the like. The invention optimally designs the surface metal structure of the super-surface reflection type electromagnetic wave polarization regulator, thereby improving the cross polarization reflectivity of the element in a certain frequency band.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a unit structure of a super-surface-based high-performance electromagnetic wave polarization regulator.
Fig. 2 is a front view of a unit structure of a super-surface-based high-performance electromagnetic wave polarization regulator according to the present invention.
FIG. 3 is a cross-polarization reflectivity diagram according to a first embodiment of the present invention.
FIG. 4 is a cross-polarization reflectivity diagram according to a second embodiment of the present invention.
Fig. 5 is a front view of a three-phase corresponding unit structure according to an embodiment of the present invention.
FIG. 6 is a cross-polarized reflectance graph of a third embodiment of the present invention.
Description of reference numerals: 1-metal rectangle placed vertically; 1-2-metal rectangle horizontally placed; 2-square media; 3-Square metal film.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
The first embodiment is as follows:
as shown in FIG. 1, each unit structure package of the present inventionThe copper foil comprises a three-layer structure, wherein the bottom layer is a square metal copper film, the middle layer is a square medium, and the surface layer is of a metal structure. The size of the square metal copper film at the bottom layer is the same as that of the square medium at the middle layer. The surface metal structure is composed of a metal elliptic sheet with a slit, four same metal rectangles (1-1) vertically arranged and two same metal rectangles (1-2) horizontally arranged, and the surface metal structures are uniformly arranged into a plane array and are positioned on the square medium. We set the material of the intermediate dielectric layer to Taconic TLY-3 with a dielectric constant of 2.33, a loss tangent of 0.0012, a dielectric thickness of 1mm, a copper film as the metal film and a thickness of 0.035mm, and the geometric parameters of the polarization unit are a =0.6mm, b =4mm, c =2.2mm, d =1mm, e =3mm, O (0,0), O1(-3.5mm,3.1mm)，O2(0,3.8mm)，O3(3.5mm,3.1mm)，O4(-3.5mm,-3.1mm)，O5(0,-3.8mm)，O6(3.5mm, -3.1mm), wherein the O point is the center of the surface metal structure, O1、O2、O3、O4、O5、O6The centers of four same metal rectangles (1-1) vertically placed and two same metal rectangles (1-2) horizontally placed in the surface metal structure are respectively. Through simulation calculation, as can be seen from the cross polarization reflectivity image shown in fig. 3, the working frequency band of the invention for the vertically incident linearly polarized electromagnetic wave is between 14.5GHz and 18.2GHz, and the cross polarization reflectivity is all more than 94.5%.
The second embodiment is as follows:
in the simulation process, on the basis of the first specific embodiment, only the material of the middle dielectric layer, the material and the structural parameters of the bottom layer square metal copper film and the surface layer metal structure of the unit structure are changed to be the same as those of the first embodiment. In this example, we used Taconic TLX-0 dielectric as the middle square dielectric layer with a dielectric constant of 2.45, a loss tangent of 0.0019, and a thickness of 1 mm. As can be seen from FIG. 4, the cross polarization reflectivity of the super-surface based high-performance electromagnetic wave polarization regulator to the vertically incident linearly polarized electromagnetic wave is above 90% in the frequency band of 14.5GHz-18.5 GHz. Therefore, only changing the material of the middle dielectric layer will also affect the cross-polarization reflectivity of the electromagnetic wave polarization regulator for the incident electromagnetic wave.
The third concrete embodiment:
as shown in fig. 5, we kept the geometric parameters of the structural elements and the materials used the same as in example one during the simulation, and removed four metal rectangles placed vertically to obtain a cross-polarized reflectance image, as shown in fig. 6. Therefore, the super-surface electromagnetic wave polarization regulator with four vertically arranged metal rectangles removed still has the capability of carrying out polarization rotation on the vertically incident linearly polarized electromagnetic wave. As can be seen from the cross polarization reflectivity image shown in FIG. 6, the working frequency bands of the electromagnetic wave polarization controller for the vertically incident linearly polarized electromagnetic waves are 14.5GHz-16GHz and 17GHz-19.5GHz, and the cross polarization reflectivity of the electromagnetic wave polarization controller is above 90% in both the two frequency bands.
Claims (7)
1. A high-performance electromagnetic wave polarization controller based on a super surface is characterized in that the controller is formed by periodically extending a plurality of same unit structures in the same plane; each unit structure comprises a three-layer structure, wherein the surface layer is a metal structure, the middle layer is a square medium (2), and the bottom layer is a square metal film (3); the side lengths of the square metal film at the bottom layer and the square medium at the middle layer are the same; the surface metal structure consists of a metal elliptic sheet with a slit, four same metal rectangles (1-1) vertically arranged and two same metal rectangles (1-2) horizontally arranged, and the metal elliptic sheets are periodically arranged into a plane array to be positioned on the square medium (2).
2. The super-surface-based high-performance electromagnetic wave polarization regulator according to claim 1, wherein the slit width of the metal elliptical sheet in the surface metal structure ranges from I =0.22mm to 0.27mm, and the angle between the slit and the horizontal direction is 35 degrees.
3. The super-surface-based high-performance electromagnetic wave polarization controller according to claim 1, wherein a is the width of a horizontally placed metal rectangle, b is the length of the horizontally placed metal rectangle, c is the length of a vertically placed metal rectangle, d is the width of the vertically placed metal rectangle, e and f are the semi-short axis and the semi-long axis of an ellipse respectively, g and h are the side lengths of a square medium, and the geometric parameters of the unit structure are as follows: a is more than or equal to 0.5mm and less than or equal to 0.7mm, b is more than or equal to 3.8mm and less than or equal to 4.2mm, c is more than or equal to 2mm and less than or equal to 2.3mm, d is more than or equal to 0.8mm and less than or equal to 1.2mm, e is more than or equal to 2.8mm and less than or equal to 3.2mm, f is more than or equal to 3.8mm and less than or equal to 4.2mm, and.
4. The super-surface-based high-performance electromagnetic wave polarization regulator of claim 1, wherein the center of the metal elliptical sheet is O point, and the O point is simultaneously the center of the surface metal structure, and O is1、O2、O3、O4、O5、O6The centers of four same metal rectangles (1-1) vertically placed and two same metal rectangles (1-2) horizontally placed in the surface metal structure are respectively; center O points and O of surface metal structure1、O2、O3、O4、O5、O6The coordinates of (a) are: o (0,0), O1(-3.5mm,3.1mm)，O2(0,3.8mm)， O3(3.5mm,3.1mm)，O4(-3.5mm,-3.1mm)，O5(0,-3.8mm)，O6(3.5mm,-3.1mm)。
5. The super-surface-based high-performance electromagnetic wave polarization regulator according to claim 1, wherein the square metal films of the surface metal structure and the bottom metal structure can be made of gold, silver, copper, aluminum, and the like, and the thickness ranges from 0.017mm to 0.035 mm.
6. The super-surface-based high-performance electromagnetic wave polarization regulator of claim 1, wherein the intermediate layer dielectric material can be Taconic series dielectric material.
7. The super-surface-based high-performance electromagnetic wave polarization regulator according to claim 1, wherein the dielectric constant of the intermediate layer dielectric material is in a range of 2 to 2.5, and the loss tangent value is in a range of 0.0009 to 0.0012.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922162574.XU CN210957023U (en) | 2019-12-06 | 2019-12-06 | High-performance electromagnetic wave polarization controller based on super surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636000A (en) * | 2020-12-08 | 2021-04-09 | 中国人民解放军空军工程大学 | Ultra-composite material with infrared low emission |
| CN114142239A (en) * | 2021-11-19 | 2022-03-04 | 重庆大学 | Method for realizing source control beam regulation and control of electromagnetic waves by utilizing polarized confluence super-surface |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636000A (en) * | 2020-12-08 | 2021-04-09 | 中国人民解放军空军工程大学 | Ultra-composite material with infrared low emission |
| CN112636000B (en) * | 2020-12-08 | 2022-03-25 | 中国人民解放军空军工程大学 | Ultra-composite material with infrared low emission |
| CN114142239A (en) * | 2021-11-19 | 2022-03-04 | 重庆大学 | Method for realizing source control beam regulation and control of electromagnetic waves by utilizing polarized confluence super-surface |
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