CN109786975A - A kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation - Google Patents
A kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation Download PDFInfo
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Abstract
The invention proposes a kind of realization devices of OAM vortex electromagnetic wave orbit plane omnidirectional radiation, there is technical issues that for solving the OAM beam radiation direction existing in the prior art for being distributed in the radiation of orbit plane interior orientation, including lens and feed, the lens, the M round speaker shape dielectric-slab that equal and radius is sequentially increased from inside to outside by height is laminated, its bottom end is big, and top is small or closes, M > 2；The round speaker shape dielectric-slab is spliced by N number of dielectric ring that radius from top to bottom is sequentially increased, N > 3；The change of gradient being gradually reduced by bottom end to top is presented in M × N number of dielectric ring effective dielectric constant；Each dielectric ring is spliced by the inside hollow out of different number and the media units of shape approximation hexahedron structure.OAM vortex electromagnetic wave finally is realized after the conversion of lens, wave beam omnidirectional radiation on orbit plane.
Description
Technical field
The invention belongs to fields of communication technology, are related to a kind of realization dress of OAM vortex electromagnetic wave orbit plane omnidirectional radiation
It sets, can be used for wireless communication technology field.
Background technique
Orbital angular momentum OAM vortex electromagnetic wave, makes it in the field of wireless communication the advantages of increasing in terms of transmission bandwidth
The efficient utilization of band resource may be implemented.Spherical coordinate system is established by the centre of sphere of feed, the vortex electromagnetic wave beam center OAM is presented
The wave beam of the back taper of recess, this back taper is symmetrical about the centre normal on feed radiating surface, the radiation of beam main lobe
Direction is 25 ° to 45 ° of direction, is distributed in the space that the elevation angle is surrounded by 15 ° to 55 ° of two rounding conical surfaces in beam collection
Interior, beam radiation has the characteristics that directionality.By this feature, beam main lobe is collapsed by various methods in the prior art
Directivity angle makes to be distributed in beam collection in the space that the rounding conical surface of the elevation angle less than 10 ° is surrounded.It is dissipated by this reduction
The method that angle improves the intrinsic divergence characterization of OAM wave beam, solves OAM vortex electromagnetic wave in wireless transmissions, with transmission distance
From increase, energy dissipation phenomenon caused by toroidal beam radius increases improves the ability that wave beam transmits at a distance indirectly.
As wireless communication receiver equipment puts forward higher requirements OAM beam radiation angles range, to beam radiation side
To and the demand of beam radiation plane be also all diversified.The radiation direction of the intrinsic non-orbit plane of OAM wave beam makes its nothing
Method meets the needs of wireless communication receiver equipment receives OAM wave beam without dead angle, this is but also it is applied to wireless communication technique neighbour
Domain is extremely limited.
Paper " the Realization of Beam Steering Based on that Shi Lizheng, Chen Liling et al. are delivered at it
Plane Spiral Orbital Angular Momentum Wave”(IEEE Transactions on Antennas and
Propagation 10.1109/TAP.2017.2786297 1558-2221 in March, 2018) in, it discloses a kind of OAM and is vortexed
The device of electromagnetic wave beam orbit plane radiation.The device includes three kinds of round slot antenna, annular loudspeaker and feed structures.Circle
Shape slot antenna uses cross section for I-shaped and the uniform dielectric structure of filled dielectric material, at the quadrature position of bottom there are
Two feed ports.Annular loudspeaker are using ring internal diameter Ferrite metal structure identical with round gap antenna radius, loudspeaker
Opening and circular groove are respectively positioned in orbit plane and symmetrical about lateral central axes.The ring of annular loudspeaker is embedded in round gap day
Line is that the space of I-shaped constitutes resonant cavity in cross section.Feed include vector analysis instrument, power divider, phase shifter and
4 devices such as hybrid coupler, the two paths of signals that vector analysis instrument generates, after power distribution and phase shift, by hybrid coupled
90 ° of phase phase difference of two-way eigen mode signal is transmitted to two feed ports of round slot antenna by device.The device first by
Circle property slot antenna generates OAM vortex electromagnetic wave；Again through the resonant cavity between round slot antenna and annular loudspeaker to wave beam into
Horizontal deflection, so that being distributed in orbit plane in OAM beam collection；By the two-way eigen mode signal of feed output to different
The OAM vortex electromagnetic wave for levying pattern count carries out beam superposition and beam energy focuses, so that OAM wave beam is in a manner of high orientation
It is radiated.The advantages of device is to combine round slot antenna and ring the characteristics of being located at orbit plane by annular loudspeaker opening
Resonant cavity between shape loudspeaker realizes the deflection of OAM wave beam, so that being distributed in orbit plane in OAM beam collection.
But the shortcoming that the device still has is: the OAM wave beam given off through hybrid coupler, although wave beam
Can integrated distribution in orbit plane, but beam radiation direction has the characteristics that high directivity, characterizes beam radiation side
To azimuth less than 90 ° so that wave beam cannot achieve the omnidirectional radiation at 360 ° omni-directional angle.
Summary of the invention
It is an object of the invention in view of the deficiency of the prior art, provide a kind of OAM vortex electromagnetism wave trajectory
The realization device of plane omnidirectional radiation, for solving the OAM existing in the prior art for being distributed in the radiation of orbit plane interior orientation
Beam radiation direction there is technical issues that.
To achieve the above object, the technical solution that the present invention takes includes: lens 1 and feed 2, in which:
The lens 1, the M round speaker shape dielectric-slab 11 that and radius equal by height is sequentially increased from inside to outside are laminated
It forms, bottom end is big, and top is small or closes, M > 2, what the round speaker shape dielectric-slab 11 was sequentially increased by radius from top to bottom
N number of dielectric ring 111 is spliced, and the presentation of N > 3, M × N number of dielectric ring 111 effective dielectric constant is gradually subtracted by top to bottom end
Small change of gradient；The dielectric ring 111 is by SijThe media units 1111 of a internal hollow out and shape approximation hexahedron structure are spelled
It connects, the top and bottom of the media units 1111 are parallel, and the inner surface and the outer surface is arc surface and radius of curvature is identical, nij
Indicate the media units in j-th of dielectric ring of i-th of round speaker shape dielectric-slab, nij> 3, each dielectric ring 111 includes
nijQuantity SijMeetSijIndicate that i-th of round speaker shape is situated between
Media units quantity in scutum in j-th of dielectric ring, VijIndicate j-th of media units in i-th of round speaker shape dielectric-slab
For the volume of solid dielectric ring, vijIndicate the volume of j-th of solid medium unit in i-th of round speaker shape dielectric-slab；
The feed 2, for generating OAM vortex electromagnetic wave, which is fixed on 1 bottom end side of lens by bracket 3
On central axes, and the focus of its OAM vortex electromagnetic wave generated is located in the cavity of lens 1.
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the M round speaker shape medium
The central axes of plate 11 are overlapped, and the coning angle when top end opening is small or closing is α, 30o≤α≤150o.
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the media units 1111,
The radius of curvature r of surfaces externally and internallyijMeet relational expression:Wherein, rijIt is expressed as i-th of round speaker shape medium
The radius of curvature of the media units surfaces externally and internally of j-th of dielectric ring, c in plateijIs expressed as in i-th of round speaker shape dielectric-slab
The arc length of the media units of j dielectric ring, cijMeet:ψijIt is expressed as in i-th of round speaker shape dielectric-slab j-th
Angle between the two sides of dielectric ring, ψijMeet:CijIt is expressed as i-th of round speaker shape
The circumference of j-th of dielectric ring, S in dielectric-slabijIndicate the medium in i-th of round speaker shape dielectric-slab in j-th of dielectric ring
Element number, i=1,2,3 ... ..., M, j=1,2,3 ... ..., N.
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the media units 1111, with
The inclination angle that horizontal plane angle is β is placed,30o≤α≤150o, 15o≤β≤75o。
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the media units 1111,
The shape for the hollow out body that internal hollow out is formed is spherical or column.
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the shape of the hollow out body are
Quadrangular shape, the central axes of short transverse are vertical with the surfaces externally and internally of the media units 1111, and the hollow out body with it is described
The inner surface of media units 1111 or outer surface perforation, or penetrated through with the surfaces externally and internally of the media units 1111.
A kind of realization device of above-mentioned OAM vortex electromagnetic wave orbit plane omnidirectional radiation, the quadrangular shape hollow out body,
Its bottom surface side length φijMeet:0≤φij<u, wherein u indicates the side length of solid medium unit, and ε is indicated
The relative dielectric constant of j-th of used dielectric material of solid medium ring of i-th of round speaker shape dielectric-slab, εijIndicate i-th
The equivalent relative dielectric constant of dielectric ring after j-th of removal hollow out body of a round speaker shape dielectric-slab.
Compared with the prior art, the invention has the following advantages:
Lens of the present invention take top small or closing and the big round speaker shape structure in bottom end, by M round speaker
Shape dielectric-slab is laminated, and each round speaker dielectric-slab is spliced by N number of dielectric ring, the round loudspeaker of M × N number of dielectric ring
The equivalent relative dielectric constant change of gradient that shape structure combination M × N rank is gradually reduced by bottom end to top integrates the two
Part realizes the OAM wave beam given off from lens outer surface and can open up compared with prior art in orbit plane progress omnidirectional radiation
The azimuth of the wide OAM wave beam being distributed in orbit plane.
Detailed description of the invention
Fig. 1 is the overall structure diagrammatic cross-section of the embodiment of the present invention 1；
Fig. 2 is main view, side view, top view, the bottom view of Fig. 1；
Fig. 3 is the structural schematic diagram of the round speaker shape dielectric-slab of the embodiment of the present invention 1；
Fig. 4 is the structural schematic diagram of present media ring；
Fig. 5 is the structural schematic diagram of present media unit；
Fig. 6 is the transformation medium relation schematic diagram of lens Virtual Space of the present invention and physical space；
Fig. 7 is the flow chart that the present invention builds three-dimensional lens using Matlab-Api-HFSS programming；
Fig. 8 is that the present invention uses the OAM vortex electromagnetic wave phase bit distribution figure before and after lens；
Fig. 9 is that the present invention uses the near-field field strength distribution map before and after lens；
Figure 10 is that the present invention uses the far field two-dimensional radiation directional diagram before and after lens；
Figure 11 is that the present invention uses the far field three-dimensional radiation directional diagram before and after lens.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is made further to be described in detail:
Embodiment 1, the structure of lens used by the present embodiment are the big round speaker shape of the small bottom end opening of top end opening
Structure.
Referring to Fig.1, the present invention includes lens 1 and feed 2.
The lens 1,8 round speaker shape dielectric-slabs 11 that and radius equal by height is sequentially increased from inside to outside are in
The mode that axis is overlapped is laminated, and top cone angle alpha=90°；The round speaker shape dielectric-slab 11 is by from top to bottom half
17 dielectric rings 111 that diameter is sequentially increased are spliced, and the equivalent relative dielectric constant of 136 dielectric rings 111 is presented by top
The change of gradient being gradually reduced to bottom end.
The dielectric ring 111 is by SijThe splicing of media units 1111 of a internal hollow out and shape approximation hexahedron structure and
At the top and bottom of the media units 1111 are parallel, and the inner surface and the outer surface is arc surface and radius of curvature is identical, and with water
Plane holder angle beta=45°Inclination angle place.Use nijIndicate the medium in j-th of dielectric ring of i-th of round speaker shape dielectric-slab
Unit, nij> 3, the n that each dielectric ring 111 includesijQuantity SijMeetSijIndicate j-th of medium in i-th of round speaker shape dielectric-slab
Media units quantity in ring, VijIndicate that j-th of media units is solid dielectric ring in i-th of round speaker shape dielectric-slab
Volume, vijIndicate the volume of j-th of solid medium unit in i-th of round speaker shape dielectric-slab.
The media units 1111, the radius of curvature r of surfaces externally and internallyijMeet relational expression:Wherein,
rijIt is expressed as the radius of curvature of the media units surfaces externally and internally of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, cijTable
It is shown as the arc length of the media units of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, cijMeet:ψijIt indicates
For the angle between the two sides of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, ψijMeet:CijIt is expressed as the circumference of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, SijTable
Show the media units quantity in i-th of round speaker shape dielectric-slab in j-th of dielectric ring, i=1,2,3 ..., 8, j=1,2,
3,…,17。
The media units 1111, the shape for the hollow out body 11112 that internal hollow out is formed are quadrangular shape, height side
To central axes it is vertical with the surfaces externally and internally of the media units 1111, and the hollow out body and the media units 1111 is inside and outside
Surface penetrates through.Wherein, the hollow out body 11112 of the quadrangular shape, bottom surface side length φijMeet:0
≤φij<u, wherein u indicates the side length of solid medium unit 1111, and u=4mm, ε indicate i-th of round speaker shape dielectric-slab
The relative dielectric constant of j-th of used dielectric material of solid medium ring, ε=7.45, εijIndicate i-th of round speaker shape medium
The equivalent relative dielectric constant of dielectric ring 111 after j-th of removal hollow out body of plate.
The feed 2, for generating OAM vortex electromagnetic wave, which is fixed on 1 bottom end side of lens by bracket 3
On central axes, and the focus of its OAM vortex electromagnetic wave generated is located in the cavity of lens 1.
Embodiment 2, the lens that the present embodiment the uses round speaker shape structure big for top closure bottom end opening.
The closed feature of lens tip is embodied in first round speaker shape dielectric-slab at inner surface of the lens, by certainly
17 dielectric rings that upper and lower radius is sequentially increased are spliced, but form the Top dielectric ring of round speaker shape dielectric-slab
Ring internal diameter is 0mm, therefore forms the dielectric ring of Central Closed.Other structures and the feed used are same as Example 1.
From wave beam is realized in this target of orbit plane omnidirectional radiation, embodiment 2 is also able to achieve the mesh of embodiment 1
Mark, compared with Example 1, although the closure of apex structure can reduce conversion of the OAM wave beam without lens just from saturating
Vertex end is overflowed, but this closure leads to be distributed with the mixing for being mutually reflected interference on a small quantity in the narrow space of lens tip
Wave beam enters the deflection characteristic of lens influence OAM wave beam, therefore the effect of embodiment 2 does not have the effect of embodiment 1 good.
Design procedure of the invention includes the following:
1, determine that the position of 1 shape of lens, 111 quantity of dielectric ring, the quantity of round speaker shape dielectric-slab 11 and lens is sat
Mark.
Firstly, feed 2 generates OAM vortex electromagnetic wave, the inverted conical shape being recessed centered on wave beam is whole in order to be completely covered
A wave beam, therefore take the shape of round speaker shape.
Secondly, determining the quantity of dielectric ring 111 and round speaker shape dielectric-slab 11.First, determine the same round loudspeaker of composition
111 quantity of dielectric ring of shape dielectric-slab 11.The OAM vortex electromagnetic wave beam that feed 2 generates is from 1 inner surface of lens (first
The inner surface of round speaker shape dielectric-slab 11) it is incident, wave beam deflection angle is 45 °.Heretofore described round speaker shape medium
The tangential side length of the xoz rectangular cross-sectional of dielectric-slab 11 is 4mm, and half in greatest irradiation direction is taken from wavefront field intensity map
Power lobe width, in order to reduce the case where wave beam is just overflowed from top end opening without the conversion of lens 1, radial side length is taken
The half power lobe width of wave beam can be completely covered when 68mm, therefore be 17 rings.Second, determine the number of round speaker shape dielectric-slab 11
It is logical under conditions of amount, the told lens 1 of the present invention are up to 7.5, minimum 1.42 in known dielectric constant, and number of rings is 17 rings
Partial differential equation (PDE) solver for crossing physical field simulation software Comsol Multiphysics solves boundary condition and satisfaction
Equivalent relative dielectric constant gradient distribution needed for this boundary condition show that 11 quantity of round speaker shape dielectric-slab can be 7-10
It is a.The present invention by continuous simulating, verifying quantity be 8 when, be able to achieve OAM wave beam with the elevation angle be 90 ° direction deflect, make OAM
Orbit plane is distributed in beam collection.
Finally, determining the position coordinates of lens 1: three-dimensional cylindrical coordinate is established by origin of the geometric center of feed 2, in order to
Quickly and accurately calculate different medium unit 1111 position coordinates, choose the 1st round speaker shape dielectric-slab in the face xoz
The media units position coordinates of intersection are basic coordinate, derive and calculate the position coordinates of remaining media units 1111 and indicate whole
The position coordinates of a lens 1, with symbol Pl、r、Z is indicated, is denoted asWherein PlIndicate 1 lowermost end of lens most
Low spot, r indicate minimum point PlThe face xoz subpoint to origin projector distance,Indicate minimum point P1Projector distance r phase
To the deflection angle of x-axis, z indicates minimum point PlTo the vertical range in the face xoz.
2, the equivalent relative dielectric constant gradient distribution of 136 ring dielectric rings 111 is determined
Using the theoretical design for carrying out electromagnetic parameter based on Laplace's equation spatial alternation determine first lens 1 from
Transformation medium transformational relation of the Virtual Space to physical space；Then at the edge of lens 1, setting Neumann-Dirichlet is sliding
Dynamic boundary condition；Secondly, equivalent relative dielectric constant corresponding to dielectric ring 111 is calculated by PDE solver, by 136
Equivalent relative dielectric constant carry out sliding-model control, final export 136 according to the gradient that is gradually reduced by bottom end to top
The equivalent relative dielectric constant gradient distribution of dielectric ring 111.Wherein, the equivalent relative dielectric constant of each dielectric ring 111 with
The equivalent relative dielectric constant for constituting multiple media units 1111 of this layer of structure is identical, i.e. their electromagnetic materials having the same
Parameter.
3, three-dimensional lens are built in Matlab-Api-HFSS programming
Building for three-dimensional lens is to be compiled in Ansys HFSS v18.0 software and Matlab software using Api interface routine
What Cheng Jianmo was completed.By current efficient Matlab-Api-HFSS programmed method can realize the high efficiency of modeling, flexibility and
Plasticity.
The present invention builds the flow chart of three-dimensional lens using Matlab-Api-HFSS programming, and key step includes:
(1) lens model universal architecture parameter is initialized；
The coordinate of (2) 136 ring dielectric rings 111 calculates, and obtains conventional coordinates formula；
(3) the modeling loop structure of 17 ring dielectric ring 111 and 8 layer round speaker shape dielectric-slabs 11 is created；
(4) the adjustment number of plies is single numerical value and number of rings is single numerical value, completes building for specified dielectric ring 111；
(5) the adjustment number of plies is single numerical value and number of rings is 17 rings, completes building for specified round speaker shape dielectric-slab 11；
(6) the adjustment number of plies is 8 layers and number of rings is 17 rings, completes automatically building for entire lens 1.
4, the technique of device is realized
The full dielectric lens threedimensional model put up in simulation software (Ansys HFSS v18.0) is exported, according to Jie
Electromagnetic material parameter needed for matter lens chooses the printed material that dielectric constant is 7.45, and it is suitable that the required precision according to printing is chosen
3D printer, print entire lens 1 according to derived model.
Below in conjunction with emulation experiment, technical effect of the invention is further described
1, simulated conditions and content
Simulated conditions: lens 1 are placed in the central axial place right above feed, and 1 bottom surface of lens is lower than where feed 2
At the lower section 5mm of horizontal plane.Feed 2 is micro-strip linear array antenna, and working frequency 10GHz, the OAM for generating 2 mode are vortexed
Electromagnetic wave beam, simulation software are as follows: Ansys HFSS v18.0.
Emulation content:, to using device of the present invention carry out near-field field strength distribution map, far field two-dimensional radiation directional diagram,
4, far field three-dimensional radiation directional diagram, OAM vortex electromagnetic wave phase bit distribution figure etc. emulation.
2, analysis of simulation result
Simulation result is as shown in Figure 8, Figure 9, Figure 10 and Figure 11.Referring to Fig. 8, from 1 outer surface of lens (the 8th layer of horn-like list
The outer surface of layer structure) phase compensation of OAM vortex electromagnetic beam that transmits and phase distribution do not receive influence, phase
The intrinsic spiral status of OAM vortex electromagnetic wave is still presented in distribution.Referring to Fig. 9, the wave beam transmitted from the outside of lens 1 is in-orbit
Radiated electromagnetic wave around in road plane, wavefront into direction be no longer originally fixed direction；In conjunction with Figure 10, in two-dimentional far field
Find out in antenna pattern, it is 90 ° that the main lobe of the OAM wave beam radiated by lens 1, which is biased to angle, therefore realizes that wave beam is flat in track
Distribution in face；0 and Figure 11 referring to Fig.1 show that azimuth of the OAM wave beam in orbit plane is 360 °, therefore OAM vortex electromagnetism
The beam radiation direction of wave is changed into omni-directional radiation by directionality radiation, in summary simulation result, demonstrates of the invention real
OAM wave beam is showed in the omnidirectional radiation of orbit plane.
Above description is only one embodiment of the present of invention, does not constitute any limitation of the invention, it is clear that for ability
For the professional in domain, after understanding the content of present invention and principle, all may without prejudice to the principle of the invention, into
The various modifications and variations of row in form and details, but these modifications and variations based on inventive concept are still of the invention
Within scope of protection of the claims.
Claims (8)
1. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation, it is characterised in that: including lens (1) and feedback
Source (2), in which:
The lens (1), M round speaker shape dielectric-slab (11) stacking that and radius equal by height is sequentially increased from inside to outside
It forms, bottom end is big, and top is small or closing, M > 2, the round speaker shape dielectric-slab (11) are sequentially increased by radius from top to bottom
N number of dielectric ring (111) be spliced, N > 3, M × N number of dielectric ring (111) effective dielectric constant present by bottom end to top
The change of gradient being gradually reduced；The dielectric ring (111) is by SijThe medium list of a internal hollow out and shape approximation hexahedron structure
First (1111) are spliced, and the top and bottom of the media units (1111) are parallel, and the inner surface and the outer surface is arc surface and song
Rate radius is identical, nijIndicate the media units in j-th of dielectric ring of i-th of round speaker shape dielectric-slab, nij> 3, Mei Gejie
The n that matter ring (111) includesijQuantity SijMeet SijIndicate the
Media units quantity in i round speaker shape dielectric-slab in j-th of dielectric ring, VijIndicate i-th of round speaker shape dielectric-slab
In j-th media units be solid dielectric ring volume, vijIndicate j-th of solid Jie in i-th of round speaker shape dielectric-slab
The volume of matter unit；
The feed (2), for generating OAM vortex electromagnetic wave, which is fixed on lens (1) bottom end one by bracket (3)
On the central axes of side, and the focus of its OAM vortex electromagnetic wave generated is located in the cavity of lens (1).
2. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 1, feature exist
It is overlapped in the central axes (11) of, the M round speaker shape dielectric-slab, and the coning angle when top end opening is small or closing is α,
30°≤α≤150°。
3. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 1, feature exist
In, the media units (1111), the radius of curvature r of surfaces externally and internallyijMeet relational expression:Wherein, rij
It is expressed as the radius of curvature of the media units surfaces externally and internally of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, cijIt is expressed as
The arc length of the media units of j-th of dielectric ring, c in i-th of round speaker shape dielectric-slabijMeet:ψijIt is expressed as i-th
Angle in a round speaker shape dielectric-slab between the two sides of j-th of dielectric ring, ψijMeet:CijIt is expressed as the circumference of j-th of dielectric ring in i-th of round speaker shape dielectric-slab, SijTable
Show the media units quantity in i-th of round speaker shape dielectric-slab in j-th of dielectric ring, i=1,2,3 ... ..., M, j=1,2,
3,……,N。
4. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 3, feature exist
In, the media units (1111) are placed with horizontal plane angle for the inclination angle of β,
5. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 1, feature exist
In the media units (1111), the shape for the hollow out body that internal hollow out is formed is spherical or column.
6. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 5, feature exist
In the shape of the hollow out body is quadrangular shape, the interior appearance of the central axes of short transverse and the media units (1111)
Face is vertical, and the inner surface of the hollow out body and the media units (1111) or outer surface penetrate through, or with the media units
(1111) surfaces externally and internally penetrates through.
7. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 6, feature exist
In, the quadrangular shape hollow out body, bottom surface side length φijMeet: Wherein, u indicates real
The side length of heart media units, ε indicate j-th of used dielectric material of solid medium ring of i-th of round speaker shape dielectric-slab
Relative dielectric constant, εijDielectric ring after indicating j-th of i-th of round speaker shape dielectric-slab removal hollow out body it is equivalent opposite
Dielectric constant.
8. a kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation according to claim 1, feature exist
In the lens (1), the dielectric material that can be changed using dielectric constant is realized by way of 3D printing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112202476A (en) * | 2020-09-29 | 2021-01-08 | 西安电子科技大学 | Vortex electromagnetic wave near field wireless communication method based on coil circular array |
| CN112202476B (en) * | 2020-09-29 | 2021-09-10 | 西安电子科技大学 | Vortex electromagnetic wave near field wireless communication method based on coil circular array |
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