CN110165417A - For generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum - Google Patents
For generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum Download PDFInfo
- Publication number
- CN110165417A CN110165417A CN201910495811.6A CN201910495811A CN110165417A CN 110165417 A CN110165417 A CN 110165417A CN 201910495811 A CN201910495811 A CN 201910495811A CN 110165417 A CN110165417 A CN 110165417A
- Authority
- CN
- China
- Prior art keywords
- phase
- shifting unit
- gap
- metal layer
- artificial electromagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241000276498 Pollachius virens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a kind of for generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum, is formed by several first phase-shifting units and several second phase-shifting unit array arrangements.First phase-shifting unit, the second phase-shifting unit include three-layer metal and two layers of medium substrate, and wherein upper layer and lower layer metal is the square of two pieces of same sizes, and metallic intermediate layer is one piece of square-shaped metal for having certain gap shape.The metallic intermediate layer of first phase-shifting unit digs out two vertical " I " fonts gaps by square-shaped metal piece, and the metallic intermediate layer of the second phase-shifting unit is a box.Artificial electromagnetic surface disclosed in the invention can generate the Bezier electromagnetic beam for carrying orbital angular momentum, will be expected to improve message capacity applied to the communications field, and the invention has many advantages, such as that light weight, thickness are thin, manufacturing process is mature.
Description
Technical field
The present invention relates to field of communication technology more particularly to orbital angular momentum electromagnetic generation technology fields, and in particular to
It is a kind of for generate carry orbital angular momentum Bezier wave beam artificial electromagnetic surface.
Background technique
With the rapid development of the communication technology, limited frequency spectrum resource becomes more and more crowded, and frequency spectrum resource be can not
Regenerated resources are used many methods, such as Code Division Multiple Access, time division multiple acess to further increase message capacity
Technology, multichannel technology etc..In recent years, orbital angular momentum wave embodies new freedom degree because carrying orbital angular momentum, reason
By it is upper at any frequency all have infinite a variety of non-interfering orthogonal modes, the communications field be expected to promoted spectrum efficiency with
Message capacity also embodies in radar imagery field and proposes high-resolution potentiality, is increasingly becoming research hotspot.However track angular motion
Amount wave also has its inborn weakness, because its special phase distribution causes beam diversity to be difficult to concentrate.Bezier wave beam is because of its nothing
The characteristic of diffraction receives the concern of Many researchers, although the Bezier wave beam of absolutely salt free ligands cannot achieve, approximate shellfish
The distance that Sai Er wave beam appoints the propagation for so capableing of salt free ligands quite remote.Make track angular motion using the non-diffraction beam of Bezier wave beam
Measuring the scattered wave beam convergence of wavelength-division has very big researching value potential.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of for producing for defect involved in background technique
The artificial electromagnetic surface of the raw Bezier wave beam for carrying orbital angular momentum.
The present invention uses following technical scheme to solve above-mentioned technical problem:
It include several first phase-shifting units for generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum
With several second phase-shifting units；
First phase-shifting unit, the second phase-shifting unit from top to bottom comprising the first metal layer, first medium substrate layer,
Second metal layer, second medium substrate layer, third metal layer；The first metal layer, third metal layer are square, side length
For a；The first medium substrate layer, second medium substrate layer are square, side length b, and b is more than or equal to a；
The second metal layer of first phase-shifting unit is square, side length b, which is provided with the first to the 6th gap,
First gap, the second gap are mutually perpendicular to, and the center that formed is located at the cross gap at second metal layer center；The third
The both ends of gap, the 5th gap respectively at the middle point with first gap are vertically connected, the 4th gap, the 6th gap
The both ends at the middle point with second gap are vertically connected respectively, and third, the 4th, the 5th, the 6th gap are respectively with
The four edges of two metal layers correspond parallel；Center of the figure that described first to the 6th gap is formed about second metal layer
Symmetrically；
The second metal layer of second phase-shifting unit is box, and the side length of outline border is b；
The phase compensation amount range of first phase-shifting unit be [0,180 °), the phase compensation of second phase-shifting unit
Measure range be [180 °, 360 °)；
Several first phase-shifting units and several second phase-shifting unit array arrangements form artificial electromagnetic surface, make us work
The center of resistance electromagnetic surface is origin, is z-axis by origin and perpendicular to the straight line on artificial electromagnetic surface, in any phase-shifting unit
The heart is (x, y), the phase compensation amount of the phase-shifting unit with respect to the coordinate that origin arrivesFormula
In, λ is the wavelength under working frequency, and β is the angle that Bezier wave beam projects direction and z-axis.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
The property that there are natural materials to be not present on artificial electromagnetic surface.Present invention utilizes the phases on artificial electromagnetic surface
Position functional mutant is converted into the directrix plane electromagnetic wave on the artificial electromagnetic surface designed through the invention and carries track angular motion
The Bezier electromagnetic wave of amount.The artificial electromagnetic surface that the present invention designs can be placed on electromagnetic horn mouth face or be closed when use
It can be achieved with converting common quasi-plane wave in the Bezier wave beam for carrying orbital angular momentum on the array antenna mouth face of suitable size.
A kind of people's magnetic surface of Bezier wave beam generating carrying orbital angular momentum of the present invention, surpasses surface with other
Or orbital angular momentum wave generates antenna and compares, and has and polarizes that adaptable, efficiency of transmission is high, light weight, section are low, easily fabricated
The advantages that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first phase-shifting unit in the present invention；
Fig. 2 is the Bezier beam phase compensation cloud atlas for carrying orbital angular momentum；
Fig. 3 (a), Fig. 3 (b) are respectively the cell parameters mark of the first phase-shifting unit in the present invention, the second phase-shifting unit
Figure；
Fig. 4 is the phase-shift phase of the unit of 12 kinds of different parameters at different frequencies；
Fig. 5 is the present invention for generating the artificial electromagnetic entire surface signal for carrying the Bezier wave beam of orbital angular momentum
Figure；
Fig. 6 is that the phase of interception at z=200mm is general；
Fig. 7 is electric field amplitude cloud charts.
In figure: 1- the first metal layer, 2- first medium substrate layer, 3- second metal layer, 4- second medium substrate layer, 5-
Three metal layers, the second gap 6-.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary,
It is thorough and complete to these embodiments are provided so that the disclosure, and model of the invention will be given full expression to those skilled in the art
It encloses.In the accompanying drawings, for the sake of clarity it is exaggerated component.
The invention discloses a kind of for generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum, includes
Several first phase-shifting units and several second phase-shifting units；
As shown in Figure 1, first phase-shifting unit, the second phase-shifting unit from top to bottom include the first metal layer, first
Medium substrate layer, second metal layer, second medium substrate layer, third metal layer；The first metal layer, third metal layer are
Square, side length a；The first medium substrate layer, second medium substrate layer are square, side length b, and b be greater than etc.
In a；
The second metal layer of first phase-shifting unit is square, side length b, which is provided with the first to the 6th gap,
First gap, the second gap are mutually perpendicular to, and the center that formed is located at the cross gap at second metal layer center；The third
The both ends of gap, the 5th gap respectively at the middle point with first gap are vertically connected, the 4th gap, the 6th gap
The both ends at the middle point with second gap are vertically connected respectively, and third, the 4th, the 5th, the 6th gap are respectively with
The four edges of two metal layers correspond parallel；Center of the figure that described first to the 6th gap is formed about second metal layer
Symmetrically；
The second metal layer of second phase-shifting unit is box, and the side length of outline border is b；
The phase compensation amount range of first phase-shifting unit is the phase of second phase-shifting unit between 0 to 180 °
Compensation rate range is between 180 ° to 360 °；
Several first phase-shifting units and several second phase-shifting unit array arrangements form artificial electromagnetic surface, make us work
The center of resistance electromagnetic surface is origin, is z-axis by origin and perpendicular to the straight line on artificial electromagnetic surface, in any phase-shifting unit
The heart is (x, y), the phase compensation amount of the phase-shifting unit with respect to the coordinate that origin arrivesFormula
In, λ is the wavelength under working frequency, and β is the angle that Bezier wave beam projects direction and z-axis.
Compensation formulaIt is orbital angular momentum wave phase Compensation Rule and Bezier
The superposition of wave phase Compensation Rule, wherein orbital angular momentum wave phase Compensation Rule isIn formula, φ1It indicates
Centre coordinate is the phase compensation amount of the phase-shifting unit of (x, y)；Bezier wave phase Compensation Rule isIn formula, φ2Indicate that centre coordinate is the phase compensation amount of the phase-shifting unit of (x, y).
In the present invention, the side length b of the first metal layer, third metal layer in the first phase-shifting unit, or adjustment first are adjusted
The width in the first to the 6th gap in phase-shifting unit second metal layer, enable to the first phase-shifting unit phase compensation amount [0,
180 °) variation；Adjust the side length b of the first metal layer, third metal layer in the second phase-shifting unit, or the second phase-shifting unit of adjustment
The side length of middle second metal layer inside casing, enable to the first phase-shifting unit phase compensation amount [180 °, 360 °) variation.
When specifically forming artificial electromagnetic surface, the length of a is first determined according to working frequency, then according to phase compensation amount
FormulaThe phase compensation amount of each phase-shifting unit on artificial electromagnetic surface is calculated,
According to the phase compensation amount section [0,180 °) or section [180 °, 360 °) come determine using the first phase-shifting unit still
Second phase-shifting unit.
It gets out the side length b of the first phase-shifting unit under working frequency, the first to the 6th gap width, phase compensation amount in advance
The table of comparisons and the side length b of the second phase-shifting unit, the side length of second metal layer inside casing, phase compensation amount the table of comparisons, then root
It can then determine the parameter of each first phase-shifting unit, the second phase-shifting unit easily according to the phase compensation amount of each phase-shifting unit.
The plane in 60mm × 70mm is obtained according to the Bezier beam phase compensation formula for carrying orbital angular momentum first
Phase compensation value required for each pixel in range, the size of each pixel are 2.4mm × 2.4mm.Use calculating work
It is as shown in Figure 2 to have the phase compensation cloud atlas obtained.
Then need to design the SPA sudden phase anomalies unit that phase shift ability meets the phase compensation requirement that Fig. 2 is proposed, phase
The specific design parameter for being mutated unit is as follows:
As shown in Fig. 3 (a), wherein H=0.5mm, D=2.4mm does not adjust in phase compensation from 0~360 °, in phase
Using the structure on the left side when between 0~180 ° of position compensation, between 0.12mm~0.2mm, La variation range exists W variation range
Between 1.5mm~1.7mm, Lp variation range is between 2.04mm~2.24mm, Lc=2.28mm；Phase compensation 180 °~
The structure of Fig. 3 (b) is used when between 360 °, between 2.0mm~2.28mm, D=2.4mm is remained unchanged Lc1 variation range.
Phase compensation amount as needed, the unit for devising 12 kinds of different parameters are individually placed on corresponding pixel,
This 12 units are as shown in Figure 4 in the phase-shift phase of different frequency.
The super entire surface view designed by above step described in specific embodiment is as shown in Figure 5.
As shown in fig. 6, be by specific embodiment design artificial electromagnetic surface at work, frequency be 34GHz, z
The phase intercepted at=200mm is general, it can be seen that the phase is general at single wall helical form, reaches the expected effect of orbital angular momentum wave
Fruit.
As shown in fig. 7, be by specific embodiment design artificial electromagnetic surface at work, frequency be 34GHz, y
The electric field amplitude cloud charts intercepted at=0 plane, it can be seen that electric field is concentrated along the energy comparison that Z axis is propagated, and reaches Bei Sai
The desired effect of your wave beam.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (1)
1. for generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum, which is characterized in that include several the
One phase-shifting unit and several second phase-shifting units；
First phase-shifting unit, the second phase-shifting unit from top to bottom include the first metal layer, first medium substrate layer, second
Metal layer, second medium substrate layer, third metal layer；The first metal layer, third metal layer are square, side length a；
The first medium substrate layer, second medium substrate layer are square, side length b, and b is more than or equal to a；
The second metal layer of first phase-shifting unit is square, side length b, which is provided with the first to the 6th gap, described
First gap, the second gap are mutually perpendicular to, and the center that formed is located at the cross gap at second metal layer center；The third seam
The both ends of gap, the 5th gap respectively at the middle point with first gap are vertically connected, the 4th gap, the 6th gap point
Both ends not at the middle point with second gap are vertically connected, and third, the four, the five, the 6th gaps are respectively with second
The four edges of metal layer correspond parallel；Center pair of the figure that described first to the 6th gap is formed about second metal layer
Claim；
The second metal layer of second phase-shifting unit is box, and the side length of outline border is b；
The phase compensation amount range of first phase-shifting unit is the phase compensation of second phase-shifting unit between 0 to 180 °
Measuring range is between 180 ° to 360 °；
Several first phase-shifting units and several second phase-shifting unit array arrangements form artificial electromagnetic surface, enable artificial electromagnetic
The center on surface is origin, is z-axis, the center phase of any phase-shifting unit by origin and perpendicular to the straight line on artificial electromagnetic surface
It is (x, y), the phase compensation amount of the phase-shifting unit to the coordinate that origin arrivesIn formula, λ
It is the wavelength under working frequency, β is the angle that Bezier wave beam projects direction and z-axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495811.6A CN110165417B (en) | 2019-06-10 | 2019-06-10 | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495811.6A CN110165417B (en) | 2019-06-10 | 2019-06-10 | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110165417A true CN110165417A (en) | 2019-08-23 |
| CN110165417B CN110165417B (en) | 2024-04-12 |
Family
ID=67627963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910495811.6A Active CN110165417B (en) | 2019-06-10 | 2019-06-10 | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110165417B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552556A (en) * | 2015-12-28 | 2016-05-04 | 西安电子科技大学 | Orbital angular momentum vortex wave beam generation apparatus and method |
| CN105846106A (en) * | 2016-05-26 | 2016-08-10 | 哈尔滨工业大学 | Lens and method for generating Bessel beam carrying orbital angular momentum based on super surface |
| CN107134659A (en) * | 2017-05-02 | 2017-09-05 | 西安电子科技大学 | High-gain orbital angular momentum array antenna based on multilayer acoustical panel |
| US20190036214A1 (en) * | 2017-07-28 | 2019-01-31 | University Of Electronic Science And Technology Of China | Antenna for generating arbitrarily directed Bessel beam |
| CN210111045U (en) * | 2019-06-10 | 2020-02-21 | 南京航空航天大学 | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum |
-
2019
- 2019-06-10 CN CN201910495811.6A patent/CN110165417B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552556A (en) * | 2015-12-28 | 2016-05-04 | 西安电子科技大学 | Orbital angular momentum vortex wave beam generation apparatus and method |
| CN105846106A (en) * | 2016-05-26 | 2016-08-10 | 哈尔滨工业大学 | Lens and method for generating Bessel beam carrying orbital angular momentum based on super surface |
| CN107134659A (en) * | 2017-05-02 | 2017-09-05 | 西安电子科技大学 | High-gain orbital angular momentum array antenna based on multilayer acoustical panel |
| US20190036214A1 (en) * | 2017-07-28 | 2019-01-31 | University Of Electronic Science And Technology Of China | Antenna for generating arbitrarily directed Bessel beam |
| CN210111045U (en) * | 2019-06-10 | 2020-02-21 | 南京航空航天大学 | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum |
Non-Patent Citations (1)
| Title |
|---|
| XIANHANG YANG等: "A wideband and low-profile transmitarray antenna using different types of unit-cells", 《WILEY》, vol. 61, no. 6, 22 February 2019 (2019-02-22) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110165417B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wu et al. | A four-band and polarization-independent BDS-based tunable absorber with high refractive index sensitivity | |
| CN104347915B (en) | Space angle filter and antenna | |
| Ni et al. | Topological edge states in acoustic Kagome lattices | |
| Boseggia et al. | Locking of iridium magnetic moments to the correlated rotation of oxygen octahedra in Sr2IrO4 revealed by x-ray resonant scattering | |
| Jia et al. | Acoustic topological insulator by honeycomb sonic crystals with direct and indirect band gaps | |
| Jaggard et al. | Fractal surface scattering: a generalized Rayleigh solution | |
| Yan et al. | Acoustic square-root topological states | |
| CN206180122U (en) | Do you be applied to terahertz bands's 3 super material structure of bit transmission -type electromagnetic coding | |
| CN102299421B (en) | Amplitude-phase weighed narrow waveguide slot array antenna | |
| Süsstrunk et al. | Switchable topological phonon channels | |
| Wang et al. | Symmetry analysis and CTE solvability for the (2+ 1)-dimensional Boiti–Leon–Pempinelli equation | |
| CN105826692A (en) | Lens and method for generating vortex beam with convergence effect based on super surface | |
| CN210111045U (en) | Artificial electromagnetic surface for generating Bessel beams carrying orbital angular momentum | |
| CN106058490A (en) | Method for generating vortex electromagnetic wave | |
| CN110165417A (en) | For generating the artificial electromagnetic surface for carrying the Bezier wave beam of orbital angular momentum | |
| CN104319434A (en) | Design method of ultralow-reflectivity rotary phase plate capable of generating orbital angular momentum wave beams | |
| Shareef et al. | Design of multi-band millimeter wave antenna for 5G smartphones | |
| CN108987939B (en) | Vortex electromagnetic wave gathering device and wireless communication system | |
| CN108598710A (en) | A kind of spatial domain phase-shifting unit and the vortex wave phase plate being made from it | |
| Zhang et al. | A multi-band closed-cell metamaterial absorber based on a low-permittivity all-dielectric structure | |
| Liao et al. | Engineering negative coupling and corner modes in a three-dimensional acoustic topological network | |
| Smirnova et al. | Water-wave vortices and skyrmions | |
| Zhang et al. | Acoustic impurity shielding induced by a pair of metasurfaces respecting pt symmetry | |
| Liu et al. | Thermoacoustic focusing lens by symmetric Airy beams with phase manipulations | |
| Frycz et al. | Self-focusing of nonlinear ion-acoustic waves and solitons in magnetized plasmas. Part 3. Arbitrary-angle perturbations, period doubling of waves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |