CN105161856B - A kind of slot antenna array for producing vortex electric wave - Google Patents
A kind of slot antenna array for producing vortex electric wave Download PDFInfo
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- CN105161856B CN105161856B CN201510353203.3A CN201510353203A CN105161856B CN 105161856 B CN105161856 B CN 105161856B CN 201510353203 A CN201510353203 A CN 201510353203A CN 105161856 B CN105161856 B CN 105161856B
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Abstract
The invention discloses a kind of slot antenna for producing vortex electric wave, this new antenna solves the problems, such as that conventional vortex wave antenna array structure is complicated, difficulty of processing is big.Aerial array in the present invention is：N number of gap is outputed on one piece of circular metal plate, each gap is fed from the central position along circular metal plate center to edge distribution, N number of gap around circular metal plate Central Symmetry, each slot element, N >=4.The antenna radius of the present invention is Centimeter Level, and a kind of simple in construction, vortex antenna for being readily produced can be provided for vortex communication system.
Description
Technical field
The invention belongs to Wireless Telecom Equipment technical field, be related to a kind of slot antenna array for producing vortex electric wave and its
Application method.
Background technology
With the development of society, requirement of the people to capability of wireless communication system increasingly improves.Due to communication band resource
It is limited, communication band utilization rate how is effectively improved, causes extensive concern both domestic and external.1992, Allen etc. demonstrated light
Ripple not only carries spin angular momentaum, and carries orbital angular momentum.Wherein, orbital angular momentum can have a unlimited pattern (again may be used
Referred to as topological charge).See Allen, L., et al., " Orbital angular momentum of light and the
transformation of Laguerre-Gaussian laser modes.”Phys Rev A,1992.45(11):
p.8185-8189.When orbital angular momentum is applied in microwave, each pattern can carry information.It can so lead in theory
Cross the unlimited purpose for improving band efficiency, reaching unlimited raising message capacity.2007, Thid é etc. were first by software emulation
The secondary vortex electric wave for realizing electromagnetic arts, the vortex electric wave is realized by aerial array, sees Bo Thid é et al.,
“Utilization of photon orbital angular momentum in the low-frequency radio
domain,”Phys.Rev.Lett.,vol.99,no.8,Aug.2007,pp.087701-1-087701-4.After from this, energy
The research of enough antennas for producing vortex electric wave is paid attention to by increasing people.2013, unit is used as using Vivaldi antennas
Array, successfully generate vortex electric wave, see C.Deng et al., " Generation of OAM Radio Waves
Using Circular Vivaldi Antenna Array.”International Journal of Antennas and
Propagation,2013.2013:p.1-7。
At present, the antenna of vortex electric wave is produced, has circular antenna array, spiral parabola antenna etc., these methods can
Successfully produce vortex electric wave.But circular antenna array requires that antenna element putting position is accurate, between spiral parabola fracture
Distance be difficult to control.Therefore, the vortex antenna of production a kind of simple and easy to process is designed, there is very important meaning
Justice.
The content of the invention
For problems of the prior art, the application provides a kind of slot antenna array for realizing vortex electric wave
And its application method, wherein being studied by the concrete structure to its metallic plate such as gap and its set-up mode, with existing production
Product are more easily controlled working frequency, are provided simultaneously with the advantages that simple in construction, area is small, easy to process and use, thus especially suitable
For the electric wave that is vortexed.
To achieve the above object, according to the one side of invention, there is provided a kind of slot array for producing vortex electric wave
Row, it is characterised in that：The antenna includes metallic plate, and extending along radial direction for opening on a metal plate is N number of centrosymmetric
Gap.
Preferably, the length l values in the gap meet following relation：L=λ/2, metallic plate radius r2Meet：r2>r1+
l；Wherein r1For distance of the gap front end away from metallic plate center, and r1Value meet that gap front end is not connected with each other, metallic plate
Thickness h and the width w in gap be less than λ/10.
Preferably, the metallic plate (10) is circular or n-shaped the metallic plate with satisfactory electrical conductivity.
Preferably, when the metallic plate is n-shaped, the number of slots is identical with the number on the side of regular polygon.
Preferably, number N in gap meets on a metal plate for distribution：N≥4.
According to the another method of the present invention, the application method of above-mentioned slot antenna array is additionally provided, it is characterised in that should
Method comprises the following steps：
(1) feed port of the slot antenna array is the both sides in gap, and the port is by coaxial cable feed, coaxially
The inner wire of cable connects the positive pole of feed port, and outer conductor connects the negative pole of feed port；
(2), it is necessary to be fed to N number of port simultaneously when slot antenna array works.Feed requires：The excitation of N number of port is same
Frequency, same to amplitude, phase wants incremented by successively or the 2 π m/N that successively decrease.
The feed method can produce Wave-front phase face rotate clockwise or counter-clockwise direction topological charge be m vortex
Electric wave.The number N of wherein topological charge m and slot antenna meets：-N/2<m<N/2.Therefore, it is larger if to produce topological charge
Vortex electric wave, it is necessary to increase the number of slot antenna on a metal plate.
According to the another method of the present invention, additionally provide on the basis of it can launch the slot antenna array of vortex electric wave wave beam
The multiplexing device of vortex electric wave wave beam can further be designed, it is characterised in that：It is different comprising multiple above-mentioned slot antenna arrays
Slot antenna array distribution on different radiuses, multiple slot arrays be classified as concentric circles setting, different slot antennas
Array is interspersed, and realizes the transmitting of different rank vortex electric wave wave beam.
For slot antenna array, to launch the vortex electric wave wave beam that exponent number is m, then the feed requirement of aerial array is：N
The excitation same frequency of individual port, same to amplitude, phase wants incremented by successively or the 2 π m/N that successively decrease.Opened on the different radii of metallic plate more
Individual this kind of slot antenna array, each slot antenna array launch different vortex electric wave wave beams, it is possible to launch multiple differences
The vortex electric wave wave beam of exponent number, realizes the multiplexing of vortex electric wave wave beam.
In general, according to above-mentioned technical concept of the invention compared with prior art, it is excellent mainly to possess following technology
Point：
1st, it is simple in construction, area is small, it is easy to process and use；
2nd, working frequency is easily controllable；
3rd, the integrated of antenna is easily achieved, launches the vortex electric wave wave beam of multiple different ranks, so as to realize the electricity that is vortexed
The multiplexing of ripple wave beam.
The application has an advantageous effect in that compared with background technology：Vortex electric wave wireless technology is for improving system communication
Capacity has very big potentiality, so the research for how producing vortex electric wave is an important problem, the present invention proposes one
Kind can produce the slot antenna array of vortex electric wave, this aerial array and the aerial array phase for producing vortex electric wave in the past
Than, it is simple in construction, area is small, it is easy to process and use, be a most suitable hair for vortex radio wave communication system
The antenna of signal is penetrated, vortex electric wave technology is highly suitable to be applied in next generation mobile communication system.In addition, the slot array
Row are easily achieved the integrated of antenna, launch the vortex electric wave wave beam of multiple different ranks, so as to realize vortex electric wave wave beam
Multiplexing.
Brief description of the drawings
Fig. 1 (A) is the side view of the embodiment of the present invention 1；
Fig. 1 (B) is the top view of the embodiment of the present invention 1；
Fig. 1 (C) is perpendicular to a certain plane electric fields shown in embodiment 1 on antenna propagation direction；
Fig. 2 (A) is the side view of the embodiment of the present invention 2；
Fig. 2 (B) is the top view of the embodiment of the present invention 2；
Fig. 2 (C) is perpendicular to a certain plane electric fields shown in embodiment 2 on antenna propagation direction；
Fig. 3 (A) is the vortex electric wave wave beam multiplexing device side that the integrated morphology based on slot antenna array of the present invention is realized
View；
Fig. 3 (B) is that the vortex electric wave wave beam multiplexing device that the integrated morphology based on slot antenna array of the present invention is realized is bowed
View.
Embodiment
The antenna in the present invention is further elaborated below in conjunction with the accompanying drawings.
As shown in Fig. 1 (A), Fig. 1 (B), embodiments of the invention 1, including metallic plate 10, in 8 opened on a metal plate
The symmetrical gap 20 of the heart；
The metallic plate 10 is circular or positive 8 side shape the metallic plate with satisfactory electrical conductivity.Away from metallic plate center
r1Open 8 centrosymmetric gaps 20, the metallic plate radius r in place2For 45mm, distance r of the gap front end far from center1For 15mm,
The thickness h of metallic plate is 2mm, and the width w in gap is 4mm, and the length l in gap is 15mm.
For the feed port 30 by coaxial cable feed, the inner wire of coaxial cable connects the positive pole of feed port 30, leads outside
Body connects the negative pole of feed port 30.
Fig. 1 (C) is a certain plane electric fields on antenna propagation direction of the present embodiment.
As shown in Fig. 2 (A), Fig. 2 (B), embodiments of the invention 2, including metallic plate 10, in 8 opened on a metal plate
The symmetrical gap 20 of the heart；With differing only in for embodiment 1：The shape of the metallic plate 10 is positive 8 side shape.Fig. 2 (C) is this reality
Apply a certain plane electric fields on antenna propagation direction of example.
In above-mentioned two embodiment, the seam shape opened on metallic plate is identical, and metallic plate can be circular or just more
Side shape, the vortex electric wave topological charge decision of the number of slots that can be opened wherein on circular metal plate according to specific needs, and it is just more
While the number of slots opened on shape metallic plate then with regular polygon while number as, that is, the vortex electric wave topological charge that needs determines
The number on the side of regular polygon.
The vortex electric wave wave beam multiplexing device that integrated morphology based on slot antenna array of the present invention is realized.
It is provided by the invention further to design whirlpool on the basis of it can launch the slot antenna array of vortex electric wave wave beam
Revolve the multiplexing device of electric wave wave beam.For slot antenna array, to launch the vortex electric wave wave beam that exponent number is m, then aerial array
Feed requirement be：The excitation same frequency of N number of port, same to amplitude, phase wants incremented by successively or the 2 π m/N that successively decrease.In metallic plate
Multiple this kind of slot antenna arrays are opened on different radii, each slot antenna array launches different vortex electric wave wave beams, so that it may
To launch the vortex electric wave wave beam of multiple different ranks, the multiplexing of vortex electric wave wave beam is realized.
Claims (5)
- A kind of 1. slot antenna array for producing vortex electric wave, it is characterised in that：The antenna includes metallic plate (10), in metal The N number of centrosymmetric gap (20) for the long edge radial direction extension opened on plate；The feed port of the slot antenna array is the long side both sides in gap, and the port is by coaxial cable feed；Coaxial electrical The inner wire of cable connects the positive pole of feed port, and outer conductor connects the negative pole of feed port；During work, the excitation same frequency of N number of port, same to amplitude, phase wants incremented by successively or the mode for the 2 π m/N that successively decrease performs feedback Electricity, so that the aerial array launches vortex electric wave；Wherein N is port number, and N meets：N≥4；M is opening up for vortex electric wave Lotus is flutterred, m meets：-N/2<m<N/2；The length in the gapValue meets following relation：Metallic plate radius r2Meet：Wherein r1For gap Distance of the front end away from metallic plate center, and r1Value meet that gap front end is not connected with each other, the thickness h of metallic plate and gap Width w be less than λ/10.
- 2. slot antenna array as claimed in claim 1, it is characterised in that：The metallic plate (10) is circular or positive N sides The metallic plate with satisfactory electrical conductivity of shape.
- 3. the slot antenna array as described in claim 1-2 any one, it is characterised in that：When the metallic plate is positive N sides During shape, the number of slots is identical with the number on the side of regular polygon.
- 4. the application method of slot antenna array as claimed in claim 1, it is characterised in that：This method comprises the following steps：(1) feed port of the slot antenna array is the long side both sides in gap, its by coaxial cable feed, coaxial cable Inner wire connects the positive pole of feed port (30), and outer conductor connects the negative pole of feed port (30)；(2) it will want incremented by successively with corresponding according to N number of port excitation same frequency, same amplitude, phase or successively decrease 2 π m/N's Mode performs feed, so that the aerial array launches vortex electric wave.
- 5. the vortex electric wave wave beam multiplexing device being made up of the integrated morphology of slot antenna array as claimed in claim 1, its It is characterised by：Comprising multiple slot antenna arrays as claimed in claim 1, different slot antenna array distributions is different On radius, multiple slot arrays are classified as concentric circles setting, and different slot antenna arrays is interspersed, and realizes different rank whirlpool Revolve the transmitting of electric wave wave beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510353203.3A CN105161856B (en) | 2015-06-24 | 2015-06-24 | A kind of slot antenna array for producing vortex electric wave |
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| CN201510353203.3A CN105161856B (en) | 2015-06-24 | 2015-06-24 | A kind of slot antenna array for producing vortex electric wave |
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| CN105161856B true CN105161856B (en) | 2018-04-10 |
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| CN107887703B (en) * | 2017-11-01 | 2020-11-10 | 山西大学 | Dual-band vortex electromagnetic wave array antenna |
| CN109916511B (en) * | 2019-03-18 | 2020-04-07 | 江南大学 | Angular momentum detection device and method based on double-ring type nanometer slit array |
| CN110429391A (en) * | 2019-06-19 | 2019-11-08 | 朱永忠 | A kind of snail orbital angular momentum Vivaldi array antenna and method |
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| JP2011055413A (en) * | 2009-09-04 | 2011-03-17 | Nec Toshiba Space Systems Ltd | Bandwidth expansion of radial line slot array antenna |
| US8581794B1 (en) * | 2010-03-04 | 2013-11-12 | Qualcomm Incorporated | Circular antenna array systems |
| US20120139806A1 (en) * | 2010-12-02 | 2012-06-07 | Ying Zhan | IFS BEAMFORMING ANTENNA FOR IEEE 802.11n MIMO APPLICATIONS |
| CN102610908A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Ultra wide band four-tape circularly polarized antenna |
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