CN105161856A - Slot antenna array for generating vortex electric waves - Google Patents
Slot antenna array for generating vortex electric waves Download PDFInfo
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- CN105161856A CN105161856A CN201510353203.3A CN201510353203A CN105161856A CN 105161856 A CN105161856 A CN 105161856A CN 201510353203 A CN201510353203 A CN 201510353203A CN 105161856 A CN105161856 A CN 105161856A
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- antenna array
- slot antenna
- metallic plate
- electric wave
- vortex electric
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Abstract
The present invention discloses a slot antenna array for generating vortex electric waves, and the slot antenna array solves the problems that a conventional vortex electric wave antenna array is complex in structure and great in processing difficulty. The slot antenna array is characterized in that: a circular metal plate is provided with N slots, each slot is arranged along the direction from the center of the circular metal plate to the edge, the N slots are symmetrical around the center of the circular metal plate, each slot unit feeds from the center position, and the N is greater than or equal to 4. According to the slot antenna array of the present invention, the radius of the antenna is centimeter-sized, and a vortex antenna which is simple in structure and is easy to produce can be provided for a vortex communication system.
Description
Technical field
The invention belongs to Wireless Telecom Equipment technical field, relate to a kind of the slot antenna array and the using method thereof that produce vortex electric wave.
Background technology
Along with the development of society, the requirement of people to capability of wireless communication system improves day by day.Due to communication band resource-constrained, how effectively to improve communication band utilance, cause extensive concern both domestic and external.1992, Allen etc. demonstrated light wave and not only carry spin angular momentaum, and carried orbital angular momentum.Wherein, orbital angular momentum can have a unlimited pattern (can be described as topological charge again).See Allen, L., etal., " OrbitalangularmomentumoflightandthetransformationofLague rre-Gaussianlasermodes. " PhysRevA, 1992.45 (11): p.8185-8189.When orbital angular momentum is applied in microwave, each pattern can carry information.By infinitely improving band efficiency, the unlimited object improving message capacity can be reached so in theory.2007, Thid é etc. achieve the vortex electric wave of electromagnetic arts first by software emulation, this vortex electric wave is realized by aerial array, see BoThid é etal., " Utilizationofphotonorbitalangularmomentuminthelow-freque ncyradiodomain, " Phys.Rev.Lett., vol.99, no.8, Aug.2007, pp.087701-1-087701-4.After this, the research that can produce the antenna of vortex electric wave is subject to the attention of increasing people.2013, using Vivaldi antenna as cellular array, successfully create vortex electric wave, see C.Dengetal., " GenerationofOAMRadioWavesUsingCircularVivaldiAntennaArra y. " InternationalJournalofAntennasandPropagation, 2013.2013:p.1-7.
At present, produce the antenna of vortex electric wave, have circular antenna array, spiral parabolic antenna etc., these methods can successfully produce vortex electric wave.But circular antenna array requires that antenna element putting position is accurate, and the distance between spiral parabola fracture is wayward.Therefore, design a kind of simple and be easy to the vortex antenna of processing, have very important significance.
Summary of the invention
For problems of the prior art, the application provides a kind of the slot antenna array and the using method thereof that realize vortex electric wave, wherein by its metallic plate as the concrete structure in gap and set-up mode thereof are studied, be easier to control operating frequency with existing product, possess that structure is simple, area is little simultaneously, be easy to the advantages such as processing and use, be thus particularly useful for vortex electric wave.
For achieving the above object, according to an aspect of invention, provide a kind of slot antenna array producing vortex electric wave, it is characterized in that: described antenna comprises metallic plate, the N number of centrosymmetric gap extended along radial direction of opening on a metal plate.
Preferably, the length l value in described gap meets following relation: l=λ/2, metallic plate radius r
2meet: r
2>r
1+ l; Wherein r
1for front end, gap is apart from the distance at metallic plate center, and r
1value meet front end, gap and be not interconnected, the thickness h of metallic plate and the width w in gap are less than λ/10.
Preferably, described metallic plate (10) is the metallic plate with satisfactory electrical conductivity that is circular or n-shaped.
Preferably, when described metallic plate is n-shaped, described number of slots is identical with the number on the limit of regular polygon.
Preferably, the gap number N on a metal plate that distributes meets: N >=4.
According to other method of the present invention, additionally provide the using method of above-mentioned slot antenna array, it is characterized in that, the method comprises the following steps:
(1) feed port of described slot antenna array is the both sides in gap, and described port is by coaxial cable feed, and the inner wire of coaxial cable connects the positive pole of feed port, and outer conductor connects the negative pole of feed port;
(2), during the work of slot antenna array, need to N number of port feed simultaneously.Feed requires: the excitation same frequency of N number of port, same to amplitude, and phase place will increasing or decreasing 2 π m/N successively.
This feed method can produce Wave-front phase face clockwise or the topological charge being rotated counterclockwise direction be the vortex electric wave of m.Wherein the number N of topological charge m and slot antenna meets :-N/2<m<N/2.Therefore, if the larger vortex electric wave of topological charge will be produced, just need the number that will increase slot antenna on a metal plate.
According to other method of the present invention, additionally provide the multiplexing device that can design vortex electric wave wave beam on the slot antenna array basis can launching vortex electric wave wave beam further, it is characterized in that: comprise multiple above-mentioned slot antenna array, different slot antenna array distribution is on different radiuses, multiple slot array is classified as concentric circles and arranges, different slot antenna arrays is interspersed, and realizes the transmitting of different rank vortex electric wave wave beam.
For slot antenna array, the vortex electric wave wave beam that exponent number is m be launched, then the feed of aerial array require be: the excitation same frequency of N number of port, same to amplitude, phase place will increasing or decreasing 2 π m/N successively.The different radii of metallic plate is opened multiple this kind of slot antenna array, and each slot antenna array launches different vortex electric wave wave beams, just can launch the vortex electric wave wave beam of multiple different rank, realize the multiplexing of vortex electric wave wave beam.
In general, according to above-mentioned technical conceive of the present invention compared with prior art, following technological merit is mainly possessed:
1, structure is simple, area is little, be easy to processing and use;
2, operating frequency is easy to control;
3, be easy to realize the integrated of antenna, launch the vortex electric wave wave beam of multiple different rank, thus realize the multiplexing of vortex electric wave wave beam.
The beneficial effect that the application has compared with background technology is: vortex electric wave wireless technology has very large potentiality for raising system communication capacity, so the research how producing vortex electric wave is an important problem, the present invention proposes a kind of slot antenna array that can produce vortex electric wave, this aerial array compared with producing the aerial array of vortex electric wave in the past, structure is simple, area is little, be easy to processing and use, for vortex radio wave communication system being a most suitable antenna transmitted, vortex electric wave technology is applicable to being applied in next generation mobile communication system very much.In addition, this slot antenna array is easy to realize the integrated of antenna, launches the vortex electric wave wave beam of multiple different rank, thus realizes the multiplexing of vortex electric wave wave beam.
Accompanying drawing explanation
Fig. 1 (A) is the end view of the embodiment of the present invention 1;
Fig. 1 (B) is the vertical view of the embodiment of the present invention 1;
Fig. 1 (C) is for perpendicular to a certain plane electric fields on antenna propagation direction shown in embodiment 1;
Fig. 2 (A) is the end view of the embodiment of the present invention 2;
Fig. 2 (B) is the vertical view of the embodiment of the present invention 2;
Fig. 2 (C) is for perpendicular to a certain plane electric fields on antenna propagation direction shown in embodiment 2;
Fig. 3 (A) is the vortex electric wave wave beam multiplexing device end view realized based on the integrated morphology of slot antenna array of the present invention;
Fig. 3 (B) is the vortex electric wave wave beam multiplexing device vertical view realized based on the integrated morphology of slot antenna array of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the antenna in the present invention is further elaborated.
As shown in Fig. 1 (A), Fig. 1 (B), embodiments of the invention 1, comprise metallic plate 10,8 that open on a metal plate centrosymmetric gaps 20;
Described metallic plate 10 is the metallic plates with satisfactory electrical conductivity that are circular or positive 8 limit shapes.At distance metallic plate center r
1place opens 8 centrosymmetric gaps 20, described metallic plate radius r
2for 45mm, front end, gap is far from the distance r at center
1for 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.
Described feed port 30 is by coaxial cable feed, and the inner wire of coaxial cable connects the positive pole of feed port 30, and outer conductor connects the negative pole of feed port 30.
Fig. 1 (C) is the present embodiment perpendicular to a certain plane electric fields on antenna propagation direction.
As shown in Fig. 2 (A), Fig. 2 (B), embodiments of the invention 2, comprise metallic plate 10,8 that open on a metal plate centrosymmetric gaps 20; Only be with the difference of embodiment 1: the shape of described metallic plate 10 is positive 8 limit shapes.Fig. 2 (C) is the present embodiment perpendicular to a certain plane electric fields on antenna propagation direction.
In above-mentioned two embodiments, the seam shape that metallic plate is opened is identical, and metallic plate can be circular or regular polygon, the number of slots wherein circular metal plate can opened vortex electric wave topological charge according to specific needs determines, the number of slots that regular polygon metallic plate is opened is then the same with the number on the limit of regular polygon, the vortex electric wave topological charge that namely needs determine regular polygon the number on limit.
Based on the vortex electric wave wave beam multiplexing device that the integrated morphology of slot antenna array of the present invention realizes.
The multiplexing device that can design vortex electric wave wave beam on the slot antenna array basis can launching vortex electric wave wave beam further provided by the invention.For slot antenna array, the vortex electric wave wave beam that exponent number is m be launched, then the feed of aerial array require be: the excitation same frequency of N number of port, same to amplitude, phase place will increasing or decreasing 2 π m/N successively.The different radii of metallic plate is opened multiple this kind of slot antenna array, and each slot antenna array launches different vortex electric wave wave beams, just can launch the vortex electric wave wave beam of multiple different rank, realize the multiplexing of vortex electric wave wave beam.
Claims (6)
1. produce a slot antenna array for vortex electric wave, it is characterized in that: described antenna comprises metallic plate (10), the N number of centrosymmetric gap (20) extended along radial direction of opening on a metal plate.
2. slot antenna array as claimed in claim 1, is characterized in that: described metallic plate (10) is the metallic plate with satisfactory electrical conductivity that is circular or n-shaped.
3. slot antenna array as claimed in claim 1, is characterized in that: the length l value in described gap meets following relation: l=λ/2, metallic plate radius r
2meet: r
2>r
1+ l; Wherein r
1for front end, gap is apart from the distance at metallic plate center, and the value of r1 meets front end, gap is not interconnected, and the thickness h of metallic plate and the width w in gap are less than λ/10.
4. the slot antenna array as described in claim 1-3 any one, is characterized in that: when described metallic plate is n-shaped, described number of slots is identical with the number on the limit of regular polygon.
5. the using method of slot antenna array as claimed in claim 1, is characterized in that: the method comprises the following steps:
(1) feed port of described slot antenna array is the both sides in gap, and it is by coaxial cable feed, and the inner wire of coaxial cable connects the positive pole of feed port (30), and outer conductor connects the negative pole of feed port (30);
(2) by with the corresponding excitation same frequency according to N number of port, same to amplitude, phase place the mode of increasing or decreasing 2 π m/N successively will perform feed, makes described aerial array launch vortex electric wave thus.
6. the vortex electric wave wave beam multiplexing device be made up of the integrated morphology of slot antenna array as claimed in claim 1, it is characterized in that: comprise multiple slot antenna array as claimed in claim 1, different slot antenna array distribution is on different radiuses, multiple slot array is classified as concentric circles and arranges, different slot antenna arrays is interspersed, and realizes the transmitting of different rank vortex 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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| CN105161856A true CN105161856A (en) | 2015-12-16 |
| CN105161856B CN105161856B (en) | 2018-04-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887703A (en) * | 2017-11-01 | 2018-04-06 | 山西大学 | A kind of double frequency-band vortex electromagnetic wave array antenna |
| CN109916511A (en) * | 2019-03-18 | 2019-06-21 | 江南大学 | Angular momentum detection device and method based on double ring type nano 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 |
Citations (4)
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| CN102576942A (en) * | 2009-09-04 | 2012-07-11 | 日本电气东芝太空系统株式会社 | Radial line slot array antenna |
| CN102570004A (en) * | 2010-12-02 | 2012-07-11 | Pc-Tel,公司 | 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 |
| US20140062823A1 (en) * | 2010-03-04 | 2014-03-06 | Qualcomm Incorporated | Circular Antenna Array Systems |
-
2015
- 2015-06-24 CN CN201510353203.3A patent/CN105161856B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576942A (en) * | 2009-09-04 | 2012-07-11 | 日本电气东芝太空系统株式会社 | Radial line slot array antenna |
| US20140062823A1 (en) * | 2010-03-04 | 2014-03-06 | Qualcomm Incorporated | Circular Antenna Array Systems |
| CN102570004A (en) * | 2010-12-02 | 2012-07-11 | Pc-Tel,公司 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887703A (en) * | 2017-11-01 | 2018-04-06 | 山西大学 | A kind of double frequency-band vortex electromagnetic wave array antenna |
| CN107887703B (en) * | 2017-11-01 | 2020-11-10 | 山西大学 | Dual-band vortex electromagnetic wave array antenna |
| CN109916511A (en) * | 2019-03-18 | 2019-06-21 | 江南大学 | Angular momentum detection device and method based on double ring type nano 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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| CN105161856B (en) | 2018-04-10 |
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