CN207818906U - It applies on the super surface of graphene of Terahertz frequency range - Google Patents
It applies on the super surface of graphene of Terahertz frequency range Download PDFInfo
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- CN207818906U CN207818906U CN201820204580.XU CN201820204580U CN207818906U CN 207818906 U CN207818906 U CN 207818906U CN 201820204580 U CN201820204580 U CN 201820204580U CN 207818906 U CN207818906 U CN 207818906U
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Abstract
The utility model discloses a kind of apply on the super surface of graphene of Terahertz frequency range, the super surface of the graphene is rearranged by the graphene reflector element of N*N unit of quantity, each graphene reflector element forms rectangular parallelepiped structure by three-decker, each graphene reflector element includes the graphene patch, the quartz medium plate of middle layer and the metal floor of bottom of top layer.The graphene patch is arranged in the upper surface of quartz medium plate, and it is θ that the rotation angle in quartz medium plate upper surface, which is arranged, in graphene patch, and rotation angle θ is any angle within the scope of 90 °~90 °；The metal floor is arranged in the lower surface of quartz medium plate, and the center position of the graphene patch is overlapped with the center position of quartz medium plate.The utility model proposes the super surface of graphene be applied to realize that the phase of the vortex wave of generation is more acurrate, and then improves the performance of vortex wave from the regulation and control of 0~360 ° of all phase of vorticity wave in Terahertz frequency range.
Description
Technical field
The utility model is related to the technical field of microwave communication more particularly to a kind of graphenes applied in Terahertz frequency range
Super surface.
Background technology
In recent years, the technology of the spin angular momentaum (SAM) and orbital angular momentum (OAM) that control electromagnetic wave gradually causes people
Research interest, it is continuous since they can be applied in the polarity diversity of communication system and channel coding etc.
There is researcher to design super surface device independently to regulate and control them.Both momentum are the intrinsic properties of a propagation electromagnetic wave,
They are related with polarization of electromagnetic wave and phase respectively.Since super surface is flexible in terms of control polarization of ele and phase
Property, they have been widely cited in the side such as irregular reflection or refraction, reflective array antenna, vortex baud generator and polarization converter
Face.
As traffic rate is gradually increased, application band can also be applied with raising in Terahertz (THz) frequency range
Super surface become inevitable trend.Some super surfaces for applying Terahertz frequency range now, most of is to use metal unit
Design, since metal is more serious in the Kelvin effect of the higher THz frequency ranges of frequency itself, make current convergence in metal surface,
Current distribution inequality causes cell impedance increase, to keep the loss on entire super surface higher, is unfavorable for practical application.Stone
Black alkene material is suitble to alternative metals in the frequency due to having good conductivity and lower surface loss in THz frequency ranges
The application of section.Some existing super surfaces of graphene at present, the usually size or adjusting graphene by changing unit patch
What chemical potential parameter was realized, the reflected phase range that this method is capable of providing only has 300 ° or so, and cannot achieve 360 °
The regulation and control of all phase are more than 300 ° of position for needing reflected phase when surface super using their design spin vortex waves,
It can only all be replaced with 300 ° of reflector element, can thus reduce performance and precise control to a certain extent.
Utility model content
In order to solve above-mentioned technological deficiency, applied in Terahertz frequency range the main purpose of the utility model is to provide a kind of
The super surface of graphene, it is intended to solve the super surface of graphene in the prior art and apply and cannot achieve in Terahertz frequency range from vortex
The technical issues of 0~360 ° of all phase regulation and control of wave.
To achieve the above object, the utility model provide it is a kind of apply on the super surface of graphene of Terahertz frequency range, should
The super surface of graphene is rearranged by the graphene reflector element of N*N unit of quantity, each graphene reflector element is by three
Layer structure composition rectangular parallelepiped structure, each graphene reflector element include the graphene patch of top layer, middle layer quartz
The metal floor of dielectric-slab and bottom, wherein：
The graphene patch is arranged in the upper surface of quartz medium plate, and graphene patch is arranged on quartz medium plate
The rotation angle on surface is θ, and rotation angle θ is any angle within the scope of -90 °~90 °；
The metal floor is arranged in the lower surface of quartz medium plate, center position and the quartz of the graphene patch
The center position of dielectric-slab overlaps.
Preferably, the graphene patch is rectangle.
Preferably, the length of the graphene patch be 13.39um, width 3.2um.
Preferably, the quartz medium plate and metal floor are a kind of cuboid knot that upper and lower surface is square
Structure.
Preferably, the length of side of the quartz medium plate be 14um, thickness 26um.
Preferably, the length of side of the metal floor be 14um, thickness 1um.
Preferably, the super surface of the graphene is rearranged by the graphene reflector element of 21*21 unit of quantity.
Compared to the prior art, the utility model proposes the graphene reflector element of new parameter structure, this graphite is utilized
The super surface of graphene of alkene reflector element structure can realize the vortex wave for generating specified topological mode, the super surface of graphene it is every
One graphene reflector element can get the value within the scope of 0~360 ° of all phase, therefore can realize 0 from vorticity wave~
360 ° of all phase regulation and control, compared with the super surface of graphene that cannot achieve the adjusting of all phase range in the prior art, this practicality is new
The phase for the vortex wave that the super surface of graphene that type proposes generates is more acurrate, and then improves the performance of vortex wave.
Description of the drawings
Fig. 1 is that the utility model applies dimensional structure diagram on the super surface of graphene of Terahertz frequency range；
Fig. 2 is the dimensional structure diagram for the single graphene reflector element for forming the super surface of graphene；
Fig. 3 is the vertical view of all graphene reflector elements distribution in the super surface of graphene；
Fig. 4 is the reflected phase Distribution value figure on the super surface of graphene；
Fig. 5 is the phase distribution figure that vortex wave electric field Ex components are analyzed on the super surface of graphene in vertical direction；
Fig. 6 is the normalization antenna pattern applied on the super surface of graphene of Terahertz frequency range.
The utility model aim realization, functional characteristics and advantage will in conjunction with the embodiments, will be in specific embodiment part one
And it is described further with reference to attached drawing.
Specific implementation mode
Further to illustrate technological means and effect that the utility model is taken to reach above-mentioned purpose, below in conjunction with
Specific embodiment of the present utility model, structure, feature and its effect is described in detail in attached drawing and preferred embodiment.It answers
Work as understanding, specific embodiment described herein is only used to explain the utility model, is not used to limit the utility model.
The utility model proposes a kind of super surfaces of the graphene of reflection-type, it is by a certain number of graphene reflector element structures
At.By the reflected phase needed at the graphene reflector element on each position of determination, and according to this regularity of distribution structure
The super surface of graphene built out, it will be able to generate a vortex electromagnetic wave with specified spin mode in vertical direction.
Refering to what is shown in Fig. 1, Fig. 1 is the dimensional structure diagram applied on the super surface of graphene of Terahertz frequency range.This reality
It applies in example, the super surface 2 of the graphene for being produced from vortex wave is arranged by the graphene reflector element of N*N unit of quantity
Composition, the super surface 2 of the graphene are in rectangular parallelepiped structure.It is anti-that this example provides a kind of graphene by 21*21 unit of quantity
Penetrate the super surface 2 of graphene that unit 1 rearranges, the surface size on the super surface of the graphene 2 is 294um*294um, each
The mutual super surface of the seamless graphene for being arranged to make up a rectangular parallelepiped structure 2 between graphene reflector element 1；When graphene is super
2 working frequency f=1.5THz of surface, when a left-hand circular polarization wave impinges perpendicularly on the super surface of the graphene 2, the graphite
The super surface of alkene 2 can reflect the vortex electromagnetic wave of an identical polarization mode in vertical direction.
Refering to what is shown in Fig. 2, Fig. 2 is the stereochemical structure signal for the single graphene reflector element for forming the super surface of graphene
Figure.In the present embodiment, the rectangular parallelepiped structure that the graphene reflector element 1 is made of three-decker, includes the stone of top layer
The metal floor 13 of black alkene patch 11, the quartz medium plate 12 of middle layer and bottom.The graphene patch 11 is arranged in stone
The center position of 12 upper surface of English dielectric-slab, and the rotation angle in 12 upper surface of quartz medium plate is arranged in graphene patch 11
For θ (angle i.e. between the long side of graphene patch 11 and three dimensional space coordinate axis X-axis is θ), metal floor 13 is arranged in stone
The lower surface of English dielectric-slab 12.Wherein, θ is any angle within the scope of -90 °~90 °.The central point of graphene patch 11 and quartz
The central point of dielectric-slab 12 overlaps, and the rotation angle θ that graphene patch 11 is arranged in 12 upper surface of quartz medium plate is surrounded
This central point carries out rotation formation.As a preferred embodiment, the actual size parameter of the graphene reflector element 1 is such as
Under：Graphene patch 11 is rectangle, and the length a of the graphene patch 11 is 13.39um, width b is 3.2um；Quartz medium plate
12 be a kind of rectangular parallelepiped structure that upper and lower surface is square, and the length of side s of the quartz medium plate 12 is 14um, thickness h is
26um；Metal floor 13 is a kind of rectangular parallelepiped structure that upper and lower surface is square, and the length of side s of the metal floor 13 is
14um, thickness 1um, metal floor 13 are metallic copper.
As shown in figure 3, Fig. 3 is the vertical view that all graphene reflector elements 1 in the super surface of graphene 2 are distributed.At this
In embodiment, if 2 θ of each reflected phase value of super 2 position of surface of graphene, according to Pancharatnam-
Berry (PB) phase principle, it is only necessary to which the graphene patch 11 of the composition graphene reflector element 1 at this position is rotated into θ
Angle, it will be able to realize required reflected phase.Finally, the graphene patch 11 of each position different rotation angle is constituted
Graphene reflector element 1 combines, and is formed the super surface of graphene 2 that can be produced from vorticity wave.
As shown in figure 4, Fig. 4 is the reflected phase Distribution value figure on the super surface of graphene 2, indicated using greyish white intensity map each
The reflected phase value that place needs, as seen from Figure 4 value range within -180 ° (bright grey)~180 ° (light gray),
In one swing circle, the continuous phase changes of-π to π are experienced counterclockwise, with vortex wave phase changing rule one
It causes.
Refering to what is shown in Fig. 5, Fig. 5 is the phase of the analysis vortex wave electric field Ex components in vertical direction of the super surface of graphene 2
Distribution map.The vortex electromagnetic wave with specified topological mode (such as 1- topological modes) to verify Perpendicular reflection, away from
Surpass from graphene and a 1000um*1000um square viewing plane is set at 5 times of wavelength locations right over surface 2, is used for
Observe the phase distribution of the electric field component Ex of back wave.As shown in figure 5, being in one by analyzing the viewing plane to obtain phase
It is a along the vortex shape rotated counterclockwise, and the gradual change of phase -180 ° of (light gray)~180 ° (black) of one week experience and is specified
Under topological mode reflected phase distribution is consistent, it was demonstrated that the super surface of the graphene that is proposed 2 can generate specified 1- topological modes
Vortex electromagnetic wave.When the super surface 2 of graphene of a circularly polarised wave vertical drive present invention, can be reflected in vertical direction
The spin vortex electromagnetic wave of specified topological mode.
As shown in fig. 6, Fig. 6 is the normalization antenna pattern on the super surface of graphene 2.The present embodiment is in order to accurately verify
The super surface of the graphene 2 can be produced from vortex in vertical direction and revolve wave, to the progress of the super surface of this graphene 2 Electromagnetic Simulation,
One right-handed circular polarization (RHCP) wave vertical incidence is set and is used as input source, analyzes the normalization radiation side on the super surface of graphene 2
Xiang Tu.In deflectionSquare viewing plane on, within the scope of θ=- 90 °~90 ° of rotation angle, back wave
There are one big recess at the position of pitching angle theta=0 ° for RHCP components, illustrate to produce vortex wave in this direction, because
Vortex wave is that helically form is propagated, and middle position is a depression points.In addition, due to swirl component being RHCP
Component, its polarization mode is consistent with the polarization mode of input source, therefore demonstrates the correctness on the super surface of graphene 2, i.e. stone
The super surface of black alkene 2 can produce the controllable vortex wave that spins in vertical direction.
The utility model constructs a kind of graphene reflector element 1 of new parameter structure, is reflected using this graphene single
The super surface of graphene 2 of 1 structure of member can realize the vortex wave for generating specified topological mode, the super surface of the graphene of design 2
Each graphene reflector element 1 can get the value within the scope of 0~360 ° of all phase, so can realize from vorticity wave 0
~360 ° of all phase regulation and control.Therefore, the utility model and the graphene that cannot achieve the adjusting of all phase range in the prior art are super
Surface is compared, the utility model proposes the phase of vortex wave that generates of the super surface 2 of graphene it is more acurrate, and then improve vortex
The performance of wave.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
Equivalent structure made based on the specification and figures of the utility model or equivalent function transformation, are applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (7)
1. a kind of apply on the super surface of graphene of Terahertz frequency range, which is characterized in that the super surface of the graphene is by N*N quantity
The graphene reflector element of unit rearranges, each graphene reflector element forms rectangular parallelepiped structure by three-decker, often
One graphene reflector element includes the metal of the graphene patch of top layer, the quartz medium plate of middle layer and bottom
Plate, wherein：
The graphene patch is arranged in the upper surface of quartz medium plate, and graphene patch is arranged in quartz medium plate upper surface
Rotation angle be θ, rotation angle θ be -90 °~90 ° within the scope of any angle；
The metal floor is arranged in the lower surface of quartz medium plate, the center position and quartz medium of the graphene patch
The center position of plate overlaps.
2. applying as described in claim 1 on the super surface of graphene of Terahertz frequency range, which is characterized in that the graphene patch
Piece is rectangle.
3. applying as claimed in claim 2 on the super surface of graphene of Terahertz frequency range, which is characterized in that the graphene patch
The length of piece is 13.39um, width 3.2um.
4. applying as claimed in claim 2 on the super surface of graphene of Terahertz frequency range, which is characterized in that the quartz medium
Plate and metal floor are a kind of rectangular parallelepiped structure that upper and lower surface is square.
5. applying as claimed in claim 4 on the super surface of graphene of Terahertz frequency range, which is characterized in that the quartz medium
The length of side of plate is 14um, thickness 26um.
6. applying as claimed in claim 4 on the super surface of graphene of Terahertz frequency range, which is characterized in that the metal floor
The length of side be 14um, thickness 1um.
7. as claim 1 to 6 any one of them is applied on the super surface of graphene of Terahertz frequency range, which is characterized in that institute
Stating the super surface of graphene is rearranged by the graphene reflector element of 21*21 unit of quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820204580.XU CN207818906U (en) | 2018-02-06 | 2018-02-06 | It applies on the super surface of graphene of Terahertz frequency range |
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| CN201820204580.XU CN207818906U (en) | 2018-02-06 | 2018-02-06 | It applies on the super surface of graphene of Terahertz frequency range |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071630A (en) * | 2018-10-22 | 2020-04-28 | 上海海洋大学 | Microwave action element, microwave food package and processing method thereof |
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2018
- 2018-02-06 CN CN201820204580.XU patent/CN207818906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071630A (en) * | 2018-10-22 | 2020-04-28 | 上海海洋大学 | Microwave action element, microwave food package and processing method thereof |
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