CN106207476A - A kind of Broadband circularly polarized antenna - Google Patents
A kind of Broadband circularly polarized antenna Download PDFInfo
- Publication number
- CN106207476A CN106207476A CN201610780554.7A CN201610780554A CN106207476A CN 106207476 A CN106207476 A CN 106207476A CN 201610780554 A CN201610780554 A CN 201610780554A CN 106207476 A CN106207476 A CN 106207476A
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- China
- Prior art keywords
- metal
- horizontal
- polarized antenna
- circularly polarized
- metal sheet
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
Abstract
The invention provides a kind of Broadband circularly polarized antenna, including being parallel to the metal floor of horizontal plane, the limit that relative another group in one group of adjacent limit of metal floor and the limit adjacent with this group is adjacent is equipped with the metal fence of L-shaped；Form two breach between two metal fence, and these two breach are rotationally symmetrical in 180 ° in horizontal plane；Metal floor be fixedly arranged in the middle of two relative vertical metal sheets, and these two vertical metal sheets are rotationally symmetrical in 180 ° in horizontal plane；The upper end of each vertical metal sheet connects a horizontal metal sheet, and horizontal metal sheet includes the horizontal lamellar body paralleled with metal floor and the semiellipse cambered surface extended from one end of horizontal lamellar body；Two horizontal metal sheets are rotationally symmetrical in 180 ° in horizontal plane；Γ type feeder line it is provided with between two vertical metal sheets.Present configuration is simple, it is possible to produces circularly polarised wave, and has the widest impedance bandwidth and axial ratio bandwidth, and high-gain and stable far field radiation pattern.
Description
Technical field
The invention belongs to microwave antenna art field, the broadband circle polarized sky of one being specifically related in wireless communication field
Line.
Background technology
Along with the high speed development of wireless technology, the antenna technology with various function has obtained developing widely.Current
All kinds of antennas are mostly linear polarized antenna, the usual simple in construction of this kind of antenna, it is easy to accomplish, but it is the most usually subject to
Antenna bearingt and the restriction of multipath effect.Owing to circular polarized antenna can receive the incoming wave of arbitrarily polarization and reduces multipath effect,
Thus have been a great concern.
Patent that Shenzhen University applies at it " a kind of circular polarisation cross dipole antenna and preparation method thereof " (application number:
201310420597.0, publication number: 103474765A) in propose a kind of circular polarized antenna based on crossed dipoles.Intersect
Dipole, is printed on two faces of medium substrate, two 3/4 rings connect, produce the orthogonal electric field with phase quadrature, it is achieved
Easy processing, the feature of stable performance.The weak point that this antenna yet suffers from is that antenna gain is relatively low, and axial ratio bandwidth is narrower,
It is difficult to meet actual demand.
Patent " a kind of circular polarization microstrip antenna realizing broad beam " that University of Electronic Science and Technology applies at it (application number:
201210135717.8, publication number: 102637956B) in propose the circular polarization microstrip antenna realizing broad beam.This antenna bag
Including dielectric substrate, circularly polarization microstrip patch, feed coaxial fitting, circularly polarization microstrip patch is printed on the one side of dielectric substrate, feedback
Electricity coaxial fitting is arranged on the another side of dielectric substrate, and 4 metal columns.This antenna achieves the circle of low section and broad beam
Polarization design.The weak point that this antenna yet suffers from is that the beamwidth of antenna is the narrowest, it is difficult to tackle current multi-field demand.
In sum, current circular polarized antenna mainly faces two problems, and the most existing circular polarized antenna bandwidth is universal relatively
Narrow, it is difficult to meet multiple practical applications demand.The most existing circular polarized antenna gain is relatively low, and communication distance is limited.
Summary of the invention
It is an object of the invention to overcome above-mentioned problems of the prior art, it is provided that a kind of high-gain broadband circle polarized
Antenna, to obtain wider circular polarisation bandwidth and higher gain and stable antenna pattern.
The technical scheme is that a kind of Broadband circularly polarized antenna, including the rectangular shaped being parallel to horizontal plane
On another adjacent limit of group that metal floor, one group of adjacent limit of described metal floor and the limit adjacent with this group are relative all
It is provided with the metal fence of L-shaped；Do not connect between the adjacent termination of two metal fence, make between two metal fence, to form two and lack
Mouthful, and these two breach are rotationally symmetrical in 180 ° in horizontal plane；Described metal floor be fixedly arranged in the middle of two relative edges
The vertical metal sheet of vertical direction, and these two vertical metal sheets are rotationally symmetrical in 180 ° in horizontal plane；Each vertical metal
The upper end of sheet connect the horizontal lamellar body having a horizontal metal sheet, described horizontal metal sheet to include paralleling with metal floor and from
What one end of horizontal lamellar body was extended is parallel to the semiellipse cambered surface of metal floor；Described semiellipse cambered surface include two relative
Straight flange and two relative semiellipse curved side, a straight flange of described semiellipse cambered surface connects with horizontal lamellar body；Described two
Individual horizontal metal sheet is rotationally symmetrical in 180 ° in horizontal plane；It is provided with Γ type feeder line between two described vertical metal sheets.
The transverse of above-mentioned semiellipse curved side and ratio >=2 of ellipse short shaft.
Upper described semiellipse cambered surface is extended from the limit perpendicular with vertical metal sheet of horizontal lamellar body.
It is provided with corner cut relative to one end of semiellipse cambered surface on above-mentioned horizontal lamellar body.
The transverse of described semiellipse curved side is parallel to the plane at arbitrary vertical metal sheet place.
Above-mentioned metal fence is made up of the metallic plate being perpendicular to metal floor.
Above-mentioned metal floor, metal fence, horizontal metal sheet and vertical metal sheet are made by copper, aluminum or ag material.
Beneficial effects of the present invention: compared with prior art, the invention have the advantages that
First, achieve circular polarisation owing to present invention uses rotational symmetry structure, overcome the band that prior art exists
It is wider than narrow, baroque problem so that the present invention has wider impedance bandwidth and axial ratio bandwidth, and antenna is by single port
Feed, simple in construction.
Second, owing to present invention uses metal fence jaggy, the gain overcoming prior art existence is low, direction
The problem of figure difference so that the present invention has higher gain and stable directional diagram.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the return loss emulation experiment datagram of the present invention；
Fig. 4 is the gain emulation experiment datagram of the present invention；
Fig. 5 is that the axle of the present invention is than emulation experiment datagram；
Fig. 6 (a) is the present invention antenna pattern in phi=0 ° of plane of 1.8GHz；
Fig. 6 (b) is the present invention antenna pattern in phi=90 ° of plane of 1.8GHz；
Fig. 7 (a) is the present invention antenna pattern in phi=0 ° of plane of 2.7GHz；
Fig. 7 (b) is the present invention antenna pattern in phi=90 ° of plane of 2.7GHz；
Fig. 8 (a) is the present invention antenna pattern in phi=0 ° of plane of 3.5GHz；
Fig. 8 (b) is the present invention antenna pattern in phi=90 ° of plane of 3.5GHz；
Description of reference numerals: 1, horizontal metal sheet；2, vertical metal sheet；3, Γ type feeder line；4, metal floor；5, metal encloses
Hurdle；6, breach；1-1, horizontal lamellar body；1-2, semiellipse cambered surface.
Detailed description of the invention
Embodiment 1:
With reference to Fig. 1 and Fig. 2, the invention provides a kind of Broadband circularly polarized antenna, including being parallel to the rectangular of horizontal plane
Relative another group in the metal floor 4 of shape, one group of adjacent limit of described metal floor 4 and the limit adjacent with this group is adjacent
Limit on be equipped with the metal fence 5 of L-shaped；Do not connect between the adjacent termination of two metal fence 5, make between two metal fence 5
Form two breach 6, and these two breach 6 are rotationally symmetrical in 180 ° in horizontal plane；Being fixedly arranged in the middle of of described metal floor 4
Two relative vertical metal sheets 2 vertically, and these two vertical metal sheets 2 are right in 180 ° of rotations in horizontal plane
Claim；The upper end of each vertical metal sheet 2 connects has a horizontal metal sheet 1, described horizontal metal sheet 1 to include and metal floor 4 phase
Parallel horizontal lamellar body 1-1 and semiellipse cambered surface 1-being parallel to metal floor 4 extended from one end of horizontal lamellar body 1-1
2；Described semiellipse cambered surface 1-2 includes two relative straight flanges and two relative semiellipse curved side, described semiellipse cambered surface
One straight flange of 1-2 connects with horizontal lamellar body 1-1；Two described horizontal metal sheets 1 are rotationally symmetrical in 180 ° in horizontal plane；
It is provided with Γ type feeder line 3 between two described vertical metal sheets 2.The present embodiment simple in construction, it is possible to produce circularly polarised wave, and have
There are the widest impedance bandwidth and an axial ratio bandwidth, and high-gain and stable far field radiation pattern.Right owing to employing rotation
Claiming structure to achieve circular polarisation, the bandwidth overcoming prior art existence is narrow, baroque problem so that the present invention has
Wider impedance bandwidth and axial ratio bandwidth, and antenna feeds by single port, simple in construction.Owing to employing metal jaggy
Fence, the gain overcoming prior art existence is low, the problem of directional diagram difference so that the present embodiment has higher gain with steady
Fixed directional diagram.
Embodiment 2:
On the basis of embodiment 1, the transverse of described semiellipse curved side and ratio >=2 of ellipse short shaft.Described half
Elliptical arc surface 1-2 extends from the limit perpendicular with vertical metal sheet 2 of horizontal lamellar body 1-1.Phase on described horizontal lamellar body 1-1
One end for semiellipse cambered surface 1-2 is provided with corner cut, and the corner cut shape cut away can be triangle, rectangle or sector；Corner cut
(i.e. at the certain point of space, the electromagnetic wave of aerial radiation is in 2 orthogonal directions to the axle ratio of antenna for different shape and size
The ratio of the amplitude of electric field component) have a certain impact, through continuous simulation optimization, the final class selected as depicted in figs. 1 and 2
Triangle corner cut, it is possible to obtain optimum axial ratio bandwidth performance.The semiellipse curved side of described semiellipse cambered surface 1-2 towards away from
The direction at metal floor 4 center is protruding.The transverse of described semiellipse curved side is parallel to arbitrary vertical metal sheet 2 place
Plane.Described metal fence 5 is made up of the metallic plate being perpendicular to metal floor 4.Described metal floor 4, metal fence 5, level
Sheet metal 1 and vertical metal sheet 2 are made by copper, aluminum or ag material.
Each structure chi of the example used when the mid frequency of the circular polarized antenna frequency band of the present invention is by 2.64GHz
Very little as follows:
The most each horizontal metal sheet end extends and includes 2 relative straight flanges and 2 relative semiellipse curved side
Semiellipse cambered surface, the transverse of its semiellipse curved side is 2 with the ratio of ellipse short shaft, and two horizontal metal sheets are at horizontal plane
Interior rotationally symmetrical in 180 °.The spacing of horizontal metal sheet is 17mm, is 30mm with the distance of metal floor.Vertical metal sheet is for long
Square, a size of 49mm × 30mm, in 180 ° of rotationally symmetrical settings in horizontal plane, it is connected to horizontal metal sheet and metal base plate
Between.Metal floor is rectangle, a size of 180mm × 145mm.2 breach of metal fence by mutually perpendicular two not
Same square breach is constituted, and wherein, the square notch size on the long limit of fence is 30mm × 30mm, the square breach chi on minor face
Very little for 30mm × 17mm.Two breach are also rotationally symmetrical in 180 ° in horizontal plane.The metal material that this example is used is concrete
For copper.
Below in conjunction with Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the antenna effects of examples detailed above is further described.
The simulation result of the present invention is to be modeled by electromagnetic software Ansys HFSS, emulates in antenna frequency band 1.5-4GHz
Obtain.
Referring to the drawings 3, Fig. 4, the Fig. 5 return loss to the present invention, axle is analyzed than with gain.
Transverse axis in Fig. 3 represents that frequency, the longitudinal axis represent return loss.In figure, solid line represents the return loss change with frequency
Trend.From the return loss plot of present invention emulation it can be seen that the impedance matching frequency band (S11≤-10dB) of antenna is 1.69-
3.65GHz, relative bandwidth 73.4%.
Transverse axis in Fig. 4 represents that frequency, the longitudinal axis represent axle ratio.In figure, solid line represents axle than the variation tendency with frequency.From
The axle of present invention emulation is than curve it can be seen that the axle of antenna is 1.72-3.56GHz than the frequency band less than 3dB, and relative bandwidth is
69.7%.
Transverse axis in Fig. 5 represents that frequency, the longitudinal axis represent axle ratio.In figure, solid line represents the gain variation tendency with frequency.From
The gain curve of present invention emulation is it can be seen that in axle ratio (≤3dB) bandwidth, the gain of antenna is 8.3-10.1dBi, averagely
Gain 9.2dBi.
Referring to the drawings 6, Fig. 7, the far field radiation pattern of the present invention is analyzed by Fig. 8.
In Fig. 6, Fig. 7, Fig. 8, the scale on circle represents that angle, the longitudinal axis represent normalization field intensity.In figure, solid line represents left-handed circle
Polarization intensity, dotted line represents right-handed circular polarization intensity.Fig. 6 (a) is the present invention radiation direction in phi=0 ° of plane of 1.8GHz
Figure, Fig. 6 (b) is the present invention antenna pattern in phi=90 ° of plane of 1.8GHz.Fig. 7 (a) is that the present invention is at 2.7GHz phi
The antenna pattern of=0 ° of plane, Fig. 7 (b) is the present invention antenna pattern in phi=90 ° of plane of 2.7GHz.Fig. 8 (a) is
The present invention is at the antenna pattern of phi=0 ° of plane of 3.5GHz, and Fig. 8 (b) is that the present invention is in phi=90 ° of plane of 3.5GHz
Antenna pattern.From the emulation directional diagram curve of the present invention it can be seen that antenna main pole turns to left-hand circular polarization, and at work frequency
Section internal antenna has almost identical far-field pattern at phi=0 ° and phi=90 ° of plane, it is achieved stable far-field radiation
Energy.
Knowable to above-mentioned analysis, the present invention has wider impedance matching bandwidth and axial ratio bandwidth, also has higher simultaneously
Gain and stable far field radiation pattern.
Therefore, the present invention compared with prior art has the advantage that
First, achieve circular polarisation owing to present invention uses rotational symmetry structure, overcome the band that prior art exists
It is wider than narrow, baroque problem so that the present invention has wider impedance bandwidth and axial ratio bandwidth, and antenna is by single port
Feed, simple in construction.
Second, owing to present invention uses metal fence jaggy, the gain overcoming prior art existence is low, direction
The problem of figure difference so that the present invention has higher gain and stable directional diagram.
In present embodiment, the part of not narration in detail belongs to the known conventional means of the industry, chats the most one by one
State.Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, every and basis
Invent within same or analogous design belongs to protection scope of the present invention.
Claims (7)
1. a Broadband circularly polarized antenna, it is characterised in that include the metal floor being parallel to the rectangular shaped of horizontal plane
(4) it is all provided with on the limit that, relative another group in one group of adjacent limit of described metal floor (4) and the limit adjacent with this group is adjacent
There is the metal fence (5) of L-shaped；Do not connect between the adjacent termination of two metal fence (5), make to be formed between two metal fence (5)
Two breach (6), and these two breach (6) are rotationally symmetrical in 180 ° in horizontal plane；The middle part of described metal floor (4) is fixed
Have two relative vertical metal sheets (2) vertically, and these two vertical metal sheets (2) in horizontal plane in 180 ° of rotations
Turn symmetry；The upper end of each vertical metal sheet (2) connects has a horizontal metal sheet (1), described horizontal metal sheet (1) to include and gold
Horizontal lamellar body (1-1) that possession plate (4) is parallel and be parallel to metal floor from what one end of horizontal lamellar body (1-1) was extended
(4) semiellipse cambered surface (1-2)；Described semiellipse cambered surface (1-2) includes two relative straight flanges and two relative semiellipses
Curved side, a straight flange of described semiellipse cambered surface (1-2) connects with horizontal lamellar body (1-1)；Two described horizontal metal sheets
(1) rotationally symmetrical in 180 ° in horizontal plane；It is provided with Γ type feeder line (3) between two described vertical metal sheets (2).
2. a kind of Broadband circularly polarized antenna as claimed in claim 1, it is characterised in that the oval length of described semiellipse curved side
Ratio >=2 of axle and ellipse short shaft.
3. a kind of Broadband circularly polarized antenna as claimed in claim 1, it is characterised in that described semiellipse cambered surface (1-2) is from water
Extend on the limit perpendicular with vertical metal sheet (2) of tablets (1-1).
4. a kind of Broadband circularly polarized antenna as claimed in claim 3, it is characterised in that described horizontal lamellar body (1-1) is upper relatively
It is provided with corner cut in one end of semiellipse cambered surface (1-2).
5. a kind of Broadband circularly polarized antenna as claimed in claim 1, it is characterised in that the oval length of described semiellipse curved side
Axle is parallel to the plane at arbitrary vertical metal sheet (2) place.
6. a kind of Broadband circularly polarized antenna as claimed in claim 1, it is characterised in that described metal fence (5) is by being perpendicular to
The metallic plate of metal floor (4) is constituted.
7. a kind of Broadband circularly polarized antenna as claimed in claim 1, it is characterised in that described metal floor (4), metal fence
(5), horizontal metal sheet (1) and vertical metal sheet (2) are made by copper, aluminum or ag material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780554.7A CN106207476B (en) | 2016-08-30 | 2016-08-30 | A kind of Broadband circularly polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780554.7A CN106207476B (en) | 2016-08-30 | 2016-08-30 | A kind of Broadband circularly polarized antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106207476A true CN106207476A (en) | 2016-12-07 |
| CN106207476B CN106207476B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610780554.7A Active CN106207476B (en) | 2016-08-30 | 2016-08-30 | A kind of Broadband circularly polarized antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204516A (en) * | 2017-05-23 | 2017-09-26 | 西南交通大学 | A kind of circular polarisation WLAN antennas based on open-circuit current ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030063031A1 (en) * | 2001-10-03 | 2003-04-03 | Kin-Lu Wong | Broadband circularly polarized patch antenna |
| CN201060939Y (en) * | 2007-05-09 | 2008-05-14 | 西安海天天线科技股份有限公司 | Antenna feed unit for base station antenna |
| CN101635392A (en) * | 2008-07-21 | 2010-01-27 | 华为技术有限公司 | Antenna unit, coaxial radiation assembly and antenna |
| CN203288760U (en) * | 2013-06-20 | 2013-11-13 | 成都位时通科技有限公司 | Enhanced printed dipole antenna |
-
2016
- 2016-08-30 CN CN201610780554.7A patent/CN106207476B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030063031A1 (en) * | 2001-10-03 | 2003-04-03 | Kin-Lu Wong | Broadband circularly polarized patch antenna |
| CN201060939Y (en) * | 2007-05-09 | 2008-05-14 | 西安海天天线科技股份有限公司 | Antenna feed unit for base station antenna |
| CN101635392A (en) * | 2008-07-21 | 2010-01-27 | 华为技术有限公司 | Antenna unit, coaxial radiation assembly and antenna |
| CN203288760U (en) * | 2013-06-20 | 2013-11-13 | 成都位时通科技有限公司 | Enhanced printed dipole antenna |
Non-Patent Citations (2)
| Title |
|---|
| K.GEORGE THOMAS AND PRAVEEN G: ""A Nobel Wideband Circularly Polarized Printed Antenna"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| MINGJIAN LI,KUAI-MAN LUK: ""A Wideband Circularly Polarized Antenna for"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204516A (en) * | 2017-05-23 | 2017-09-26 | 西南交通大学 | A kind of circular polarisation WLAN antennas based on open-circuit current ring |
| CN107204516B (en) * | 2017-05-23 | 2019-04-26 | 西南交通大学 | A kind of circular polarisation WLAN antenna based on open-circuit current ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106207476B (en) | 2018-11-20 |
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