CN108550982A - A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning - Google Patents
A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning Download PDFInfo
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- CN108550982A CN108550982A CN201810358406.5A CN201810358406A CN108550982A CN 108550982 A CN108550982 A CN 108550982A CN 201810358406 A CN201810358406 A CN 201810358406A CN 108550982 A CN108550982 A CN 108550982A
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- Prior art keywords
- leaky
- wave
- half width
- omnidirectional
- scanning
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- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 230000005855 radiation Effects 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000205 computational method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of period half width leaky wave dyadic array antennas for realizing two-dimentional omnidirectional's scanning, including dielectric-slab, the metal radiation body being arranged on the medium plate top surface, be arranged the dielectric-slab bottom surface metal floor and the feed connection in the dielectric-slab side is set, the metal radiation body includes connecting the dyadic array that forms by feed line by two half width period leaky-wave antennas.By using two half width period leaky-wave antennas as array element, the dyadic array formed is connected by feed line by two array elements, antenna main beam is set to make across normal direction in the faces H front and back to scanning, change the phase difference between half width period leaky-wave antenna by changing the position of feed connection simultaneously, it can make main beam that lateral probe movement occur in the quasi- E face vertical with the faces H, realize the two-dimentional omnidirectional scanning of main beam, and leaky-wave antenna is simple in structure, size is smaller, processing easy to produce.
Description
Technical field
The present invention relates to wireless communication technology field, especially a kind of period half width leaky wave for realizing two-dimentional omnidirectional's scanning
Dyadic array antenna.
Background technology
In recent years, the adjustable microband leaky-wave antenna technology of automatically controlled wave beam attains full development, in radar system and wirelessly
Communication aspects all have broad application prospects.With the discovery of mobile communication technology, in base station system even personal terminal
Wish that wave beam adjustable antenna can be applied.Traditional wave beam is adjustable period leaky-wave antenna, can only scan, Bu Nengman in the faces H
Foot the scanning of a certain spatial domain requirement, although and can realize the spacescan of wave beam using extensive phased-array antenna,
But antenna volume is huger, and feed system and control system are complicated, with high costs.
Invention content
To solve the above problems, the purpose of the present invention is to provide a kind of period half width leakages for realizing two-dimentional omnidirectional's scanning
Wave dyadic array antenna, main beam in face of the H after to while scanning can realize that two-dimentional omnidirectional sweeps in the quasi- faces E lateral probe movement
It retouches, leaky-wave antenna is simple in structure, and size is smaller, processing easy to produce.
Technical solution is used by the present invention solves the problems, such as it：
A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning, including dielectric-slab, setting are in institute
It gives an account of the metal radiation body on scutum top surface, be arranged in the metal floor of the dielectric-slab bottom surface and setting in the dielectric-slab one
The feed connection of side, the metal radiation body include two be made up of feed line connection two half width period leaky-wave antennas
Element array, the feed connection include apex drive needle and outer conductor, and the apex drive needle connects the metal radiation body, institute
It states outer conductor and connects the metal floor.
Further, the half width period leaky-wave antenna includes that combination forms the upper radiator of square wave and lower radiator, institute
The lower edge of the top edge and the lower radiator of stating radiator is followed closely by short circuit metal to be connect with the metal floor.
Further, the short circuit metal nail is arranged through the dielectric-slab.
Further, the short circuit metal follows closely the high section and second metallic object for being uniformly arranged on first metallic object
On low section.
The beneficial effects of the invention are as follows：A kind of period half width leaky wave two for realizing the scanning of two dimension omnidirectional that the present invention uses
Element array antenna connects group by two array elements by using two half width period leaky-wave antennas as array element by feed line
At dyadic array, so that antenna main beam is made across normal direction in the faces H front and back to scanning, while passing through and changing feed connection
Position changes the phase difference between half width period leaky-wave antenna, main beam can be made to occur in the quasi- E face vertical with the faces H left
Right scanning realizes the two-dimentional omnidirectional scanning of main beam, and leaky-wave antenna is simple in structure, and size is smaller, processing easy to produce.
Description of the drawings
The invention will be further described with example below in conjunction with the accompanying drawings.
Fig. 1 is the top surface structure schematic diagram of leaky-wave antenna of the present invention；
Fig. 2 is the bottom surface structure schematic diagram of leaky-wave antenna of the present invention；
Fig. 3 is the return loss plot figure of leaky-wave antenna of the present invention；
Fig. 4 is the antenna pattern that leaky-wave antenna of the present invention works in tri- frequency points of 4.6GHz, 5.4GHz, 7.9GHz；
Fig. 5 is the attenuation curve of leaky-wave antenna of the present invention indicated by half-power beam angle；
When Fig. 6-1,6-2,6-3 are respectively that feed connection moves down 4mm, respective frequencies shift in the quasi- faces E
Directional diagram；
Fig. 7 is the faces H and the quasi- faces E schematic diagram where leaky-wave antenna main beam of the present invention.
Specific implementation mode
- Fig. 2 referring to Fig.1, a kind of period half width leaky wave dyadic array day for realizing the scanning of two dimension omnidirectional of the invention
Line, including dielectric-slab 1, be arranged on 1 top surface of the dielectric-slab metal radiation body 2, gold in 1 bottom surface of the dielectric-slab is set
Possession plate 5 and the feed connection 4 in 1 side of the dielectric-slab is set, the metal radiation body 2 includes by two half width periods
For leaky-wave antenna 21 by the dyadic array of feed line connection composition, the feed connection 4 includes apex drive needle and outer conductor, institute
It states apex drive needle and connects the metal radiation body 2, the outer conductor connects the metal floor 5.By using two half-breadths
It spends period leaky-wave antenna 21 and is used as array element, the dyadic array formed is connected by feed line by two array elements, makes antenna main beam
Across normal direction to scanning before and after the faces H are made, while changing half width period leaky wave by changing the position of feed connection 4
Phase difference between antenna 21 can make main beam that lateral probe movement occur in the quasi- E face vertical with the faces H, realize main beam
Two-dimentional omnidirectional's scanning, and leaky-wave antenna is simple in structure, and size is smaller, processing easy to produce.
Further, the half width period leaky-wave antenna 21 includes that combination forms the upper radiator 211 of square wave and lower radiation
The lower edge of body 212, the top edge of the upper radiator 211 and the lower radiator 212 passes through short circuit metal nail 3 and the gold
Possession plate 5 connects.
Further, the short circuit metal nail 3 is arranged through the dielectric-slab 1.
Further, the short circuit metal nail 3 is uniformly arranged on the high section of first metallic object 211 and second metal
On low section of body 212.
Fig. 3 is the return loss plot figure of leaky-wave antenna of the present invention, and it is a to illustrate that this antenna has for the parts below -10db
Good resonance effect, can effective outside radiation energy；Fig. 4 be leaky-wave antenna of the present invention work in 4.6GHz, 5.4GHz,
The antenna pattern of tri- frequency points of 7.9GHz.The metal radiation body 2 of leaky-wave antenna is passed through by two half width period leaky-wave antennas
Even composition dyadic array increases the scanning range of antenna, realizes omnidirectional and sweep feed line by changing the position of feed connection
It retouches；Fig. 5 is the attenuation curve of leaky-wave antenna of the present invention indicated by half-power beam angle；Fig. 6-1,6-2,6-3 are respectively to present
When electric connection moves down 4mm, directional diagram that respective frequencies shift in the quasi- faces E；Fig. 7 is leaky-wave antenna main beam of the present invention
The faces H at place and the quasi- faces E schematic diagram.
For a kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning proposed by the present invention, it is based on
The parameters of periodic structure and dielectric-slab 1 influence, and the computational methods in Changshu are propagated in conjunction with traditional MLWA, utilize Floquet
Theory can obtain the leaky-wave antenna in the calculation formula of the half-power beam width in the quasi- faces E, and specific derivation process is as follows：
The beam-scanning angles of leaky-wave antenna have following relationship with its propagation constant：
Wherein βzIt is the phase constant in propagation constant；k0Indicate free space wave number.
The propagation constant of traditional waveguide type leaky-wave antenna can be obtained by Floquet formula：
The computational methods of traditional MLWA propagation constants calculate propagation constant kzDetailed process it is as follows：
εeIt is effective dielectric constant,
Wr=W/h
εrIndicate relative dielectric constant；
Δ W indicates equivalent development length,
Each affecting parameters based on elongated slot and dielectric-slab utilize Floquet in conjunction with the computational methods of MLWA propagation constants
Theory has obtained the attenuation constant of antenna
For the half-power beam width in the faces H,
For the half-power beam width in the quasi- faces E,
Have
It is consistent with the attenuation constant curve that the half-power beam width in the quasi- faces E indicates by the half-power beam width in the faces H, it says
Formula reasonability is illustrated.
Wherein W indicates the width of metal radiation body 2, k0Indicate that free space wave number, h indicate that the thickness of dielectric-slab, μ indicate
Magnetic conductivity, εrFor dielectric-slab relative dielectric constant.θHPBW1Wave beam is indicated at the half-power beam angle in the faces H, θ main beams are in the faces H
Frequency sweep angle.θHPBW2Half-power beam width of the expression wave beam in the quasi- faces E.
According to above-mentioned formula, in conjunction with antenna concrete structure size, media plate thickness and dielectric constant etc. can determine the battle array
Calculating of the leaky-wave antenna array element in the half-power beam width in the quasi- faces E in row.
The above, only presently preferred embodiments of the present invention, the invention is not limited in the above embodiments, as long as
It reaches the technique effect of the present invention with identical means, should all belong to the scope of protection of the present invention.
Claims (4)
1. a kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning, which is characterized in that including dielectric-slab
(1), be arranged metal radiation body (2) on the dielectric-slab (1) top surface, setting the dielectric-slab (1) bottom surface metal
In the feed connection (4) of the dielectric-slab (1) side, the metal radiation body (2) includes by two half widths for plate (5) and setting
Period leaky-wave antenna (21) by feed line connection composition dyadic array, the feed connection (4) include apex drive needle and
Outer conductor, the apex drive needle connect the metal radiation body (2), and the outer conductor connects the metal floor (5).
2. a kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning according to claim 1,
It is characterized in that, the half width period leaky-wave antenna (21) includes that combination forms the upper radiator (211) of square wave and lower radiator
(212), the lower edge of the top edge of the upper radiator (211) and the lower radiator (212) by short circuit metal nail (3) with
Metal floor (5) connection.
3. a kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning according to claim 2,
It is characterized in that, the short circuit metal nail (3) is arranged through the dielectric-slab (1).
4. a kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning according to claim 2,
It is characterized in that, the short circuit metal nail (3) is uniformly arranged on the top edge of the upper radiator (211) and the lower radiator
(212) on lower edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358406.5A CN108550982A (en) | 2018-04-18 | 2018-04-18 | A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358406.5A CN108550982A (en) | 2018-04-18 | 2018-04-18 | A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning |
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| Publication Number | Publication Date |
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| CN108550982A true CN108550982A (en) | 2018-09-18 |
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| CN201810358406.5A Pending CN108550982A (en) | 2018-04-18 | 2018-04-18 | A kind of period half width leaky wave dyadic array antenna for realizing two-dimentional omnidirectional's scanning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560375A (en) * | 2018-11-23 | 2019-04-02 | 中山大学 | Periodically orthogonal meander line leaky-wave antenna |
| CN109742532A (en) * | 2019-01-30 | 2019-05-10 | 厦门大学 | A kind of symmetric periodic groove leaky-wave antenna based on artificial surface phasmon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515059A (en) * | 1994-01-31 | 1996-05-07 | Northeastern University | Antenna array having two dimensional beam steering |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
-
2018
- 2018-04-18 CN CN201810358406.5A patent/CN108550982A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515059A (en) * | 1994-01-31 | 1996-05-07 | Northeastern University | Antenna array having two dimensional beam steering |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
Non-Patent Citations (3)
| Title |
|---|
| YUANXIN LI 等: "Quasi Microstrip Leaky-Wave Antenna With a Two-Dimensional Beam-Scanning Capability", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| YUANXIN LI 等: "The Periodic Half-Width Microstrip Leaky-Wave Antenna With a Backward to Forward Scanning Capability", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| 刘菊华 等: "全向扫描的周期性半宽度微带漏波天线设计", 《2009年全国微波毫米波会议论文集（上册）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560375A (en) * | 2018-11-23 | 2019-04-02 | 中山大学 | Periodically orthogonal meander line leaky-wave antenna |
| CN109560375B (en) * | 2018-11-23 | 2020-09-25 | 中山大学 | Periodic orthogonal meander line leaky-wave antenna |
| CN109742532A (en) * | 2019-01-30 | 2019-05-10 | 厦门大学 | A kind of symmetric periodic groove leaky-wave antenna based on artificial surface phasmon |
| CN109742532B (en) * | 2019-01-30 | 2020-08-18 | 厦门大学 | Symmetry period slot leaky-wave antenna based on artificial surface plasmon |
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Application publication date: 20180918 |