CN108461922A - A kind of paster antenna generating multi-modal vortex wave - Google Patents
A kind of paster antenna generating multi-modal vortex wave Download PDFInfo
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- CN108461922A CN108461922A CN201810093941.2A CN201810093941A CN108461922A CN 108461922 A CN108461922 A CN 108461922A CN 201810093941 A CN201810093941 A CN 201810093941A CN 108461922 A CN108461922 A CN 108461922A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The present invention discloses a kind of paster antenna generating multi-modal vortex wave, including medium substrate, earth plate and circularly-polarized patch.The medium substrate is rounded, there are five circularly-polarized patch for the upper surface connection of the medium substrate, the lower surface of the medium substrate is connected with earth plate, the center of each circularly-polarized patch is overlapped with the center of circle of the medium substrate, and there are two feed ports for setting on each circularly-polarized patch.By the above-mentioned means, the present invention provides a kind of paster antenna generating multi-modal vortex wave, can generate mode number be 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities, but the at most vortex wave of five kinds of different modalities of generation simultaneously.The multiplexing for realizing same frequency lower railway angular momentum, solves the problems, such as that frequency spectrum resource is in short supply to a certain extent, while further so that the size of antenna is reduced using short circuit nail loading technique.
Description
Technical field
The present invention relates to antenna technical field more particularly to a kind of paster antennas generating multi-modal vortex wave.
Background technology
Known by maxwell theory, electromagnetic field radiation has momentum.Momentum is divided into linear momentum and angular momentum, angular momentum
It is main comprising with polarize relevant spin angular momentaum and with the relevant orbital angular momentum of spatial distribution.Orbital angular momentum can be made
It can be multiplexed orbital angular momentum in the case where not increasing frequency spectrum resource for an additional dimension, increase message capacity, because
This application prospect is extensive.However, how to design vortex antenna, the vortex wave for carrying orbital angular momentum can be generated, one
It is directly a urgent problem to be solved.Recently, Zongtang Zhang etc. produce mode number using circularly polarization microstrip patch antenna
For 0, ± 1, ± 2 vortex wave, and it is made to be operated in 2.45GHz.On this basis, devising one kind can generate the present invention
The paster antenna of multi-modal vortex wave, generate mode number be 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities,
But the vortex wave of five kinds of different modalities is at most generated simultaneously and it is made to be operated in 2.4GHz.
Invention content
The invention mainly solves the technical problem of providing a kind of paster antennas generating multi-modal vortex wave, can be most
More vortex waves for generating five kinds of different modalities simultaneously solve to a certain extent to realize the multiplexing of same frequency lower railway angular momentum
Certainly frequency spectrum resource problem in short supply, while further so that the size of antenna is reduced using short circuit nail loading technique.
In order to solve the above technical problems, one aspect of the present invention is：A kind of multi-modal vortex of generation is provided
The paster antenna of wave, including medium substrate, earth plate and circularly-polarized patch, the medium substrate is rounded, the medium base
There are five circularly-polarized patch, the lower surface of the medium substrate is connected with earth plate for the upper surface connection of plate, each entelechy
The center for changing patch is overlapped with the center of circle of the medium substrate, and there are two feed ports for setting on each circularly-polarized patch.
In a preferred embodiment of the present invention, the circularly-polarized patch totally five, each circularly-polarized patch is equidistantly same
The heart arranges that the circularly-polarized patch for being located at medium substrate circle centre position is circular patch, remaining four are the annular patch of short circuit.
In a preferred embodiment of the present invention, the same unilateral edge of the annular patch of the short circuit is provided with a large amount of equal
The short circuit nail of even arrangement.
In a preferred embodiment of the present invention, the coaxial cable includes inner wire, outer conductor and filled media,
The circularly-polarized patch of the inner wire and corresponding position is electrically connected, and the outer conductor is connect with the earth plate, the filling
Medium is connect with the medium substrate.
In a preferred embodiment of the present invention, the feed port on each circularly-polarized patch is fed respectively
Excitation amplitude is equal, phase differs 90 °, make to be able to generate mode number be 0, ± 1, ± 2, ± 3, ± 4 etc. nine kind of difference mould
The vortex wave of state, but the vortex wave of five kinds of different modalities is at most generated simultaneously.
In a preferred embodiment of the present invention, the working frequency range of the circularly-polarized patch of multi-modal vortex wave is generated
For 2.4GHz.
It is an object of the invention to by designing a kind of paster antenna of multi-modal vortex wave, can generate mode number is
0, ± 1, ± 2, ± 3, the vortex wave of ± 4 etc. nine kind of different modalities, but the vortex of five kinds of different modalities is at most generated simultaneously
Wave.The multiplexing of same frequency lower railway angular momentum may be implemented in multi-modal vortex wave, and it is in short supply to solve frequency spectrum resource to a certain extent
The problem of.
To reach such purpose, the present invention uses following design scheme：
A kind of multi-modal concentric circularly-polarized patch antenna, including medium substrate, earth plate, five circularly-polarized patch-mono-
A circular patch and the annular patch of four short circuits.The medium substrate is circle, connects five paster antennas, another side on one side
Connect earth plate.The center of medium substrate, earth plate and five patches overlaps.Respectively there are two feed port on each patch,
Each feed port is connected with coaxial cable.
Particularly, the medium substrate uses Arlon AD410 materials.
Particularly, the paster antenna for generating multi-modal vortex wave includes five paster antennas, respectively circular patch
With four annular patches of short circuit, wherein the short circuit nail on short circuit annular patch is uniformly distributed with different quantity and radius respectively
In described four annular patch edges.
The feed port of the antenna, is used for connecting coaxial cable, and coaxial cable includes inner wire, outer conductor and fills out
The circularly-polarized patch of filling medium, the inner wire and corresponding position is electrically connected, and the outer conductor is connect with the earth plate,
The filled media is connect with the medium substrate.
Particularly, the feed port on each paster antenna is fed that amplitude is equal respectively, and phase differs 90 °
Excitation, be able to generate mode number be 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities, but at most together
When generate five kinds of different modalities vortex wave.
Particularly, the paster antenna of the multi-modal vortex wave of generation is operated in 2.4GHz.
It has an advantageous effect in that compared with the background technology, the present invention：
The present invention is for radio wave band frequency spectrum resource problem in short supply, it is proposed that a kind of patch of multi-modal vortex wave
Antenna, the invention can be used for electromagnetism vortex systems, which is integrated with existing communication systems technology, greatly improves communication system
The capacity of system.Two loop short patches have been increased newly with the multi-modal concentric circularly-polarized patch antenna applied in background technology,
Two spaces position is appropriately set on two newly-increased patches respectively at a distance of 157.5 °, 162 ° of feed port, and simultaneously
It is identical to give two feed port amplitudes, the excitation of 90 ° of phase differences excites circular polarisation TM respectively41, TM51The wave of pattern, from
And realize the generation for the vortex wave that higher order mode number is 3,4.In addition, making the original working frequency 2.45GHz adjustment of antenna
For suitable for wirelessly building and the 2.4GHz of the indoor scenarios such as wireless broadband router.Microstrip antenna has light-weight, volume
Small, price is relatively low, the easier advantage of mass production, and the present invention selects microstrip antenna and using short circuit nail loading technique, makes day
The size of line further decreases.
The beneficial effects of the invention are as follows：A kind of paster antenna generating multi-modal vortex wave provided by the invention, can produce
Raw mode number is 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities, but at most generate five kinds of difference moulds simultaneously
The vortex wave of state.The multiplexing for realizing same frequency lower railway angular momentum, solves the problems, such as that frequency spectrum resource is in short supply to a certain extent,
Further the size of antenna is set to reduce using short circuit nail loading technique simultaneously.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, required in being described below to embodiment
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings, wherein：
Fig. 1 is a kind of antenna face figure of a preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention；
Fig. 2 is a kind of antenna section figure of a preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention；
Fig. 3 is a kind of bottom surface of antenna figure of a preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention；
Fig. 4 is an a kind of preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention simultaneously to feed end
The excitation of 90 ° of phase differences of amplitudes such as mouth F11, F12 application, the electric field phase figure that gained vortex wave mode number is 0；
Fig. 5 is an a kind of preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention simultaneously to feed end
The excitation of 90 ° of phase differences of amplitudes such as mouth F21, F22 application, the electric field phase figure that gained vortex wave mode number is 1；
Fig. 6 is an a kind of preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention simultaneously to feed end
The excitation of 90 ° of phase differences of amplitudes such as mouth F31, F32 application, the electric field phase figure that gained vortex wave mode is 2；
Fig. 7 is an a kind of preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention simultaneously to feed end
The excitation of 90 ° of phase differences of amplitudes such as mouth F41, F42 application, the electric field phase figure that gained vortex wave mode number is 3；
Fig. 8 is an a kind of preferred embodiment of the paster antenna for generating multi-modal vortex wave of the present invention simultaneously to feed end
The excitation of 90 ° of phase differences of amplitudes such as mouth F51, F52 application, the electric field phase figure that gained vortex wave mode number is 4.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described reality
It is a part of the embodiment of the present invention to apply example only, instead of all the embodiments.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
As Figure 1-Figure 8, the embodiment of the present invention includes：
A kind of paster antenna generating multi-modal vortex wave, including medium substrate 1, earth plate 2 and circularly-polarized patch 3,
The medium substrate 1 is rounded, and there are five circularly-polarized patch 3, the medium substrates 1 for the upper surface connection of the medium substrate 1
Lower surface be connected with earth plate 2, the center of each circularly-polarized patch 3 is overlapped with the center of circle of the medium substrate 1, often
There are two feed ports 4 for setting on a circularly-polarized patch 3.
Wherein, the circularly-polarized patch 3 totally five, 3 equidistant arranged concentric of each circularly-polarized patch are located at medium base
The circularly-polarized patch 3 of 1 circle centre position of plate is circular patch 31, remaining four are short circuit annular patch 32.
Further, the same unilateral edge of the short circuit annular patch 32 is provided with a large amount of evenly arranged short circuit nails
5。
Further, the coaxial cable include inner wire, outer conductor and filled media, the inner wire with it is corresponding
The feed port 4 of the circularly-polarized patch 3 of position is electrically connected, and the outer conductor is connect with the earth plate 2, and the filling is situated between
Matter is connect with the medium substrate 1.
Further, the feed port 4 on each circularly-polarized patch 3 is fed respectively excitation amplitude is equal, phase
90 ° of position difference, make to be able to generate mode number be 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities, still
The vortex wave of five kinds of different modalities is at most generated simultaneously.
Further, the working frequency range for generating the circularly-polarized patch 3 of multi-modal vortex wave is 2.4GHz.
As shown in Figure 1, 2, 3, the paster antenna proposed by the present invention for generating multi-modal vortex wave, among paster antenna
Medium substrate 1 is using relative dielectric constant ε=4.1, the Arlon AD410 materials that loss angle tangent is 0.003.Medium substrate 1
One side be that paster antenna-is made of the short-circuit annular concentric patches of a circular patch 31 and four.Medium substrate 1 it is another
Face is ground.Short circuit nail 5 is a series of PEC conductor columns, and connects annular patch and ground by the hole on dielectric-slab.
On the edge of annular patch 1, short circuit 5 number N=24 of nail, short circuit 5 radiuses of nail are 0.5mm；On the edge of annular patch 2,
Short circuit 5 number N=36 of nail, short circuit 5 radiuses of nail are 0.5mm；On the edge of annular patch 3,5 number N=50 are followed closely in short circuit, short
5 radius of traffic stud is 0.65mm.On the edge of annular patch 4, short circuit 5 number N=66 of nail, short circuit 5 radiuses of nail are 0.72mm.
2 radius R of earth plate is 110mm, and 1 height h of medium substrate is 3.175mm, and circular patch radius a1 is 16.78mm, annular patch
1 internal diameter a2 is 21mm, and the internal diameter a3 of annular patch 2 is 41mm, and the internal diameter a4 of annular patch 3 is 61mm, annular patch 4
Internal diameter a5 is 81mm, and the outer diameter b2 of annular patch 1 is 36.6mm, and the outer diameter b3 of annular patch 2 is 56.3mm, annular patch 3
Outer diameter b4 be 76.5mm, the outer diameter b5 of annular patch 4 is 96.5mm.The feed port of inner circular patch 31 arrives the center of circle
Radius p1 is 4mm, and the radius p2 in feed port to the center of circle of annular patch 1 is 25.5mm, and the feed port of annular patch 2 arrives
The radius p3 in the center of circle is 46.6mm, and the radius p4 in feed port to the center of circle of annular patch 3 is 66.6mm, the feedback of annular patch 4
The radius p5 in electric port to the center of circle is 86.6mm.
Shown in Fig. 1,2,3, about setting for feed port F11, F12, F21, F22, F31, F32, F41, F42, F51, F52
It sets, apart 90 ° between wherein feed port F11 and F12, feed port F21
Fig. 4-Fig. 8 be set forth to feed port F11, F21 or F21, F22 or F31, F32 or F41, F42 or F51,
The excitation of 90 ° of phase differences of amplitudes such as F52 applications, the electric field phase distribution when mode of gained vortex wave is 0 or 1 or 2 or 3 or 4
Figure.In the shape of a spiral, when the mode number of vortex wave is 0, wavefront is plane wave to the phase front of electric field；When the mode of vortex wave
When number is 1,2 π of phase change；When the mode number of vortex wave is 2,4 π of phase change；When the mode number of vortex wave is 3, phase
6 π of position variation；When the mode number of vortex wave is 4,8 π of phase change.
2. the circular polarisation TM used below to the present inventionn1It is ± (n-1) electromagnetic wave that pattern, which can generate vortex wave mode number,
Feasibility be described as follows：
Antenna includes five patches, a circular patch 31 and four short circuit annular patches 32.The theory of both patches
It is analyzed as follows：Single 31 antenna of circular polarisation circular patch can generate the vortex wave that mode number is non-zero.Here knot is directly given
Fruit, such as formula (1) and (2).For TM can be generatedn1Paster antenna is justified in the right-handed circular polarization of pattern, and the x and y of global radiation field divide
Amount can be expressed as：
JnIt is Bessel function of the first kind.However for the paster antenna with determining geometric parameter and electromagnetic parameter
For, the amplitude of Section 2 is always significantly less than the amplitude of first item in (1).If the dielectric constant of dielectric substrate gradually becomes larger,
Numerical difference between two increases away from also corresponding.Therefore, TM is being generatednmIn the case of the circularly-polarized patch 3 of pattern, only consider
With e-j(n-1)φProportional item, the mode number that it corresponds to vortex wave are the-electromagnetic field of (n-1).
The annular paster antenna of short circuit can also generate the vortex wave that mode number is non-zero with one heart.Two coaxial cable feed-ins
Excitation with equal amplitude and orthogonal 90 ° of phase differences.For circular polarisation TMnmPattern, two feed port physical angle spacing
For 180 °/2n or 180 °-(180 °/2n).Total circular polarisation TMn1Mode radiation field component Ex tAnd Ey tIt is represented by：
Likewise, ej(n-1)φAnd ej(n+1)φPhase representation can be obtained from left-hand circular polarization radiation field.It should be noted total spoke
Penetrate field x and y-component by two parts J in (3)n-1(k0aεSin θ) and Jn+1(k0aεSin θ) it constitutes jointly, there is e respectively-j(n-1)φ(or ej(n-1)φ) and e-j(n+1)φ(or ej(n+1)φ) phase representation.The different of this apparent two-part amplitude only exist
In the difference of Bessel function exponent number.For the paster antenna that one has typical geometry and electromagnetic parameter, Jn+1(k0aε
Sin θ) amplitude be always significantly less than Jn-1(k0aεsinθ).Therefore, for central circular patch or the annular patch of periphery short circuit,
Only consider Jn-1(k0aεSin θ) and phase representation e-j(n-1)φ(or ej(n-1)φ) part, it correspond to vortex wave mode number be-
(n-1) electromagnetic field of (or (n-1)).
3. the realization of vortex wave multiplexing：
The method that paster antenna based on multi-modal vortex wave generates wave beam, it can be deduced that circular polarisation TMn1The wave of pattern is taken
Band phase factor e-j(n-1)φConclusion.There are five patches for antenna proposed by the present invention, and one shares ten feed ports, each to paste
There are two feed ports respectively on piece.If identical to two feed port amplitudes on each patch simultaneously respectively, 90 ° of phases
The excitation of difference, then can generate respectively mode number be 0, ± 1, ± 2, ± 3, the vortex waves of ± 4 etc. nine kind of different modalities.If simultaneously
Ten feed ports are encouraged, then can be realized under same frequency, the multiplexing of the vortex wave of five different modalities numbers, on each patch
Gap them can be made not interfere with each other, it is achieved that the multiplexing of information, solve that frequency band is crowded to ask to a certain extent
Topic.
The parameter of paster antenna is as shown in the table：
The parameter of 1 paster antenna of table
| Parameter | Description | Size (mm) |
| R | Earth plate radius | 110 |
| h | Dielectric-slab height | 3.175 |
| a1 | Circular patch radius | 16.78 |
| a2 | The internal diameter of annular patch 1 | 21 |
| a3 | The internal diameter of annular patch 2 | 41 |
| a4 | The internal diameter of annular patch 3 | 61 |
| a5 | The internal diameter of annular patch 4 | 81 |
| b1 | The outer diameter of annular patch 1 | 36.6 |
| b2 | The outer diameter of annular patch 2 | 56.3 |
| b3 | The outer diameter of annular patch 3 | 76.5 |
| b4 | The outer diameter of annular patch 4 | 96.5 |
| c1 | Distance of feed port F11, F12 to the center of circle | 4 |
| c2 | Distance of feed port F21, F22 to the center of circle | 25.5 |
| c3 | Distance of feed port F31, F32 to the center of circle | 46.6 |
| c4 | Distance of feed port F41, F42 to the center of circle | 66.6 |
| c5 | Distance of feed port F51, F52 to the center of circle | 86.6 |
In conclusion the present invention provides a kind of paster antenna generating multi-modal vortex wave, can generate mode number is
0, ± 1, ± 2, ± 3, the vortex wave of ± 4 etc. nine kind of different modalities, but the vortex of five kinds of different modalities is at most generated simultaneously
Wave.The multiplexing for realizing same frequency lower railway angular momentum, solves the problems, such as that frequency spectrum resource is in short supply to a certain extent, while into one
Step makes the size of antenna reduce using short circuit nail loading technique.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (6)
1. a kind of paster antenna generating multi-modal vortex wave, which is characterized in that including medium substrate, earth plate and circular polarisation
Patch, the medium substrate is rounded, and there are five circularly-polarized patch, the medium substrates for the upper surface connection of the medium substrate
Lower surface be connected with earth plate, the center of each circularly-polarized patch is overlapped with the center of circle of the medium substrate, Mei Gesuo
Stating setting on circularly-polarized patch, there are two feed ports.
2. the paster antenna according to claim 1 for generating multi-modal vortex wave, which is characterized in that the circularly-polarized patch
Totally five, each equidistant arranged concentric of circularly-polarized patch, the circularly-polarized patch for being located at medium substrate circle centre position is circular patch,
Remaining four are the annular patch of short circuit.
3. the paster antenna according to claim 2 for generating multi-modal vortex wave, which is characterized in that the short circuit ring attaching
The same unilateral edge of piece is provided with a large amount of evenly arranged short circuit nails.
4. the paster antenna according to claim 1 for generating multi-modal vortex wave, which is characterized in that the feed port,
For connecting coaxial cable, coaxial cable includes inner wire, outer conductor and filled media, the inner wire and corresponding position
Circularly-polarized patch is electrically connected, and the outer conductor is connect with the earth plate, and the filled media is connect with the medium substrate.
5. the paster antenna according to claim 1 for generating multi-modal vortex wave, which is characterized in that each circular polarisation
Excitation amplitude that feed port on patch is fed respectively is equal, phase differs 90 °, make to be able to generate mode number be 0,
± 1, ± 2, ± 3, the vortex wave of ± 4 etc. nine kind of different modalities, but the vortex wave of five kinds of different modalities is at most generated simultaneously.
6. the paster antenna according to claim 1 for generating multi-modal vortex wave, which is characterized in that generate multi-modal vortex
The working frequency range of the circularly-polarized patch of wave is 2.4GHz.
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| CN109888510A (en) * | 2019-04-03 | 2019-06-14 | 浙江科技学院 | A kind of super surface array antenna of the multilayer of Scrawl |
| CN110165407A (en) * | 2019-05-30 | 2019-08-23 | 浙江大学 | A kind of multimode snail OAM antenna of TM ring resonator and the paraboloid of revolution |
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| WO2020156253A1 (en) * | 2019-01-29 | 2020-08-06 | 广东曼克维通信科技有限公司 | Leakage wave microstrip annular orbit angular momentum antenna |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346850A (en) * | 2018-10-31 | 2019-02-15 | 朱永忠 | A kind of list is around spiral OAM antenna and spiral OAM antenna |
| WO2020156253A1 (en) * | 2019-01-29 | 2020-08-06 | 广东曼克维通信科技有限公司 | Leakage wave microstrip annular orbit angular momentum antenna |
| CN109888510A (en) * | 2019-04-03 | 2019-06-14 | 浙江科技学院 | A kind of super surface array antenna of the multilayer of Scrawl |
| CN110336123A (en) * | 2019-05-13 | 2019-10-15 | 浙江大学 | Antenna based on medium integrated waveguide radial propagation multimode OAM wave beam |
| CN110336123B (en) * | 2019-05-13 | 2020-12-25 | 浙江大学 | Antenna based on medium integrated waveguide radial propagation multimode OAM wave beam |
| CN110165407A (en) * | 2019-05-30 | 2019-08-23 | 浙江大学 | A kind of multimode snail OAM antenna of TM ring resonator and the paraboloid of revolution |
| CN112054305A (en) * | 2020-08-18 | 2020-12-08 | 南昌大学 | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain |
| CN112054305B (en) * | 2020-08-18 | 2023-03-14 | 南昌大学 | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain |
| CN112072295A (en) * | 2020-08-29 | 2020-12-11 | 西安电子科技大学 | Miniaturized multi-beam vortex beam generating device |
| CN115064866A (en) * | 2022-05-24 | 2022-09-16 | 中国人民解放军海军工程大学 | Circularly polarized antenna array for generating high-purity vortex wave |
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