CN107275765A - It is a kind of from the broadband circle polarized cross dipole antenna of phase shift - Google Patents
It is a kind of from the broadband circle polarized cross dipole antenna of phase shift Download PDFInfo
- Publication number
- CN107275765A CN107275765A CN201710354070.0A CN201710354070A CN107275765A CN 107275765 A CN107275765 A CN 107275765A CN 201710354070 A CN201710354070 A CN 201710354070A CN 107275765 A CN107275765 A CN 107275765A
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- antenna
- dipole
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- slab
- dielectric
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Classifications
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention discloses one kind from the broadband circle polarized cross dipole antenna of phase shift, including dielectric-slab and two dipole arms, and two of which dipole arm is respectively printed on two faces of dielectric-slab, and the position relationship of two dipole arms is：Rotate symmetrical based on dielectric-slab with another dipole arm after a dipole arm 180 degree；Dipole arm is made up of two minor matters pasters for being mutually 90 degree, the rectangular strip of minor matters or isosceles triangle shape；Two minor matters length of dipole arm are different, produce 90 ° of phase differences by the length difference for adjusting two minor matters so that antenna has circular polarization characteristics；Antenna feed point position is located at the center of dielectric-slab.The characteristics of antenna combination dipole antenna and circular polarized antenna, using the cross dipole antenna that 90 ° of phase differences are produced from phase-shift structure, the burden of complicated power division network was both cast out, and the smaller of antenna can have been made again, structure was simpler.
Description
Technical field
It is wide from phase shift more particularly, to one kind the present invention relates to from the field of phase shift circular polarisation cross dipole antenna
Band circular polarisation cross dipole antenna.
Background technology
As the importance of communication in social life is growing day by day, directly affected as the antenna of radio communication eyes
The quality and efficiency of communication.Half-wave dipole antenna is the elementary cell of antenna.Because its is simple in construction, it is easy to design, and can
Array dipoles structure is arbitrarily changed to reach preferable polarization demand.Have in gain pattern aspect of performance compared with monopole antenna
Certain raising, can obtain more satisfied pattern characteristics, and dipole antenna is due to its good radiation characteristic, wavelength
Shorten effect and resonance characteristic etc., be widely used in microwave energy collection and transmission field.By controlling multiple dipoles
Relation between upper current amplitude, phase and locus, dipole antenna can be widely applied to antenna for base station, circular polarisation
Antenna, multiple-input and multiple-output（MIMO）In antenna.
The transmission of mass data needs the support of adaptable broadband wireless system, this broadband proposition to communication equipment
Higher and higher requirement.Circular polarized antenna has in terms of anti-multipath jamming, the interference of suppression misty rain and raising channel capacity
Obvious advantage, the wireless communication system with circular polarisation and broadband characteristics is to meet the key that following mass data is wirelessly transferred
One of technology.For circular polarized antenna, it is desirable to which antenna can realize low axle ratio in wide angle, so no matter be in any angle,
Antenna can receive signal well.
Under normal circumstances, the circular polarized antenna of the phase shift produced by work(point feeding network, phase control can be realized well
System.But due to the presence of complicated power division network, antenna is difficult to integrated, thus is difficult to apply on portable set.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention proposes a kind of from the broadband circle polarized crossed dipoles day of phase shift
It is the characteristics of line, antenna combination dipole antenna and circular polarized antenna, even using the intersection that 90 ° of phase differences are produced from phase-shift structure
Pole sub-antenna, had both cast out the burden of complicated power division network, the smaller of antenna can be made again, structure is simpler.
In order to solve the above problems, technical scheme provided by the present invention is：
It is a kind of from the broadband circle polarized cross dipole antenna of phase shift, including dielectric-slab and two dipole arms, two of which dipole
Sub- arm is respectively printed on two faces of dielectric-slab, and the position relationship of two dipole arms is：Rotate a dipole arm 180 degree
Dielectric-slab to be based on another dipole arm symmetrical afterwards；Dipole arm is made up of two minor matters pasters for being mutually 90 degree, and minor matters are in square
Shape strip or isosceles triangle shape；So as to increase antenna effective radiation area, extend the effective flowing path of electric current so that
Antenna has broader frequency band；
Two minor matters length of dipole arm are different, produce 90 ° of phase differences by the length difference for adjusting two minor matters so that antenna has
Circular polarization characteristics；
Antenna feed point position is located at the center of dielectric-slab.
It is preferred that, in order that antenna obtains more preferable matching, the minor matters of dipole arm are connected by triangular structure.
It is preferred that, the antenna is coupled with dielectric-slab two by soft rigid coaxial feeding, the internal and external conductor of coaxial line
In the dipole arm in individual face.By changing the length of minor matters paster, parameter, the working frequency range of adjustable antenna and the radiation such as size
Characteristic.
It is preferred that, when minor matters are isosceles triangle, minor matters are the triangle of an isosceles triangular structure or two concatenations
Shape structure.
When only using the simple half-wave dipole from phase shifted quadrature being made up of rectangular slat, due to the square of two different lengths
Shape oscillator minor matters resonant frequency is different, and when two resonant frequencies some Frequency point close to each other, bandwidth is also gradually widened therewith.
An isosceles triangle minor matters will be modified to from the rectangular slat minor matters of phase shifted quadrature half-wave dipole, electricity can be extended
The effective flowing path of stream, so as to realize widening for frequency band.
One isosceles triangular structure of dipole arm is continued to be modified to two isosceles triangular structures, can further be increased
Plus and extension electric current effective flowing path, preferably realize that the frequency band of antenna is widened.
Compared with prior art, beneficial effects of the present invention：The present invention prints the basis of crossed dipoles in conventional plane
On, 90 ° of phase shifts are produced by changing the length of dipole arm and produce circular polarisation, by increasing triangular structure and then progressively successively
The bandwidth of dipole is widened, and is connected between two dipole minor matters by triangle so that antenna reaches more preferable
Match somebody with somebody, under conditions of other performances are not weakened, realize that antenna is broadband, reach more excellent impedance matching and more preferable circular polarisation.
The antenna be a kind of mobile device and Environmental Microwave energy transmission with acquisition system it is available from phase shift it is broadband circle polarized intersect idol
Pole sub-antenna.
Brief description of the drawings
Fig. 1 is long rectangle from the broadband circle polarized cross dipole antenna structure chart of phase shift.
Fig. 2 is S11 comparison diagram of the long rectangle from emulation and the test of the broadband circle polarized cross dipole antenna of phase shift.
Fig. 3 is triangle from the broadband circle polarized cross dipole antenna structure chart of phase shift.
Fig. 4 is the S11 contrasts of emulation and the test from the broadband circle polarized cross dipole antenna of phase shift of a triangle
Figure.
Fig. 5 is two triangles from the broadband circle polarized cross dipole antenna structure chart of phase shift.
Fig. 6 is the S11 comparison diagrams of emulation and the test from the broadband circle polarized cross dipole antenna of phase shift of two triangles.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in figure 1, long rectangle is from the broadband circle polarized cross dipole antenna structure chart of phase shift, two dipoles of dipole antenna
Sub- arm is based on medium after being respectively printed at the upper and lower surface of dielectric-slab, a dipole arm rotation 180 degree with another dipole arm
Plate is symmetrical.The dipole arm being generally aligned in the same plane is made up of two orthogonal and different length minor matters, passes through two branches
The phase difference of 90 degree of length difference and offer is provided, the characteristic of antenna circular polarisation is formed.Antenna feed point position is located at medium
The center of plate, by soft rigid coaxial feeding, the internal and external conductor of coaxial line is coupled with two dipoles up and down of dielectric-slab
On sub- arm, the dipole minor matters of two different lengths are connected by triangular structure.
In this example, the antenna is printed on thickness for 2mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01 FR-4
On epoxy glass-fiber-fabric medium substrate.Medium substrate specification is 76mm * 62mm, the idol being made up of the rectangular slat for being mutually 90 degree
The a length of 33mm, a width of 4mm of the extremely sub- long minor matters of radiation patch.The length of brachyplast section is about 26mm, a width of 4mm.Triangle connects
The a length of 12mm in bottom of binding structure, a height of 5mm.
In this example, the efforts frequency range of this antenna includes DCS1800, GSM1800, TD-SCDMA, WCDMA,
CDMA2000 wireless communication frequency bands, by changing size of substrate, adjust the parameter of respective antenna paster and the size of gradual change ring and
Thickness, can change the working frequency range of antenna.
By using printed circuit board (PCB) (PCB) technology, the broadband circle polarized intersection of double frequency-band that can have produced this example is even
Pole sub-antenna prototype in kind, because feed port paster is smaller, it is impossible to using common 3.5mm SMA interfaces, so in this implementation
Fed in example using soft nonflexible coaxial line.Wherein Fig. 2 is antenna reflection coefficient S11 emulation and test comparison figure, it can be seen that
Antenna has preferable impedance matching effect, and impedance bandwidth is about from 1.57GHz to 2.24GHz, and working frequency range is logical comprising 3G, 4G
Believe multiple frequency ranges, i.e., the performance of the antenna of such a form can meet actual requirement completely.
Embodiment 2
As shown in figure 3, in order to widen the frequency band of antenna and improve the circular polarization characteristics of antenna, rectangular slat is modified into one three
Angular structure, because triangular structure increases and extended the effective flowing path of electric current, reaches the effect of broadened bandwidth.Two
Minor matters length difference provides 90 degree of phase difference, forms the characteristic of antenna circular polarisation.
In this example, the antenna is printed on thickness for 2mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01 FR-4 rings
On oxygen glass-fiber-fabric medium substrate.Medium substrate specification is 77mm * 65mm, is mutually in 90 degree of two minor matters, larger-size
The a length of 18mm in triangle bottom, a height of 21mm, the less a length of 12mm in triangle bottom, a height of 21mm, the bottom of triangular connection structure
A length of 9mm, a height of 21mm.
Again by printed circuit board (PCB) (PCB) technology of use, also produced triangle from phase shift broadband entelechy
Change the prototype in kind of cross dipole antenna.Emulation and test comparison figure of the wherein Fig. 4 for this antenna reflection coefficient S11, can be with
It is 1.52GHz to 2.32GHz to find out such a beamwidth of antenna, compared with the antenna of examples detailed above 1, bandwidth broadening, such a shape
The performance of the antenna of formula can meet actual requirement completely, and antenna can also have preferable performance.
Embodiment 3
Be shown in Fig. 5 two triangles from the broadband circle polarized cross dipole antenna structure chart of phase shift, structure is similar to upper example,
Difference is to continue to be modified to two triangles on the basis of a triangle, is not influenceing the condition of antenna performance
Under, compared to one triangle, the advantage of two triangles is that current path can continue to increase and extend.Thus bandwidth is able to
Continue broadening.Again by the difference of two minor matters length of adjustment, the phase difference of 90 degree of offer, forms the spy of antenna circular polarisation
Property.
In this example, the antenna is printed on thickness for 2mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01 FR-4
On epoxy glass-fiber-fabric medium substrate.Medium substrate specification is 73mm * 63mm, is mutually in 90 degree of two minor matters, size is larger
Two triangle bottom length of minor matters and it is high be respectively 16mm, 14mm and 20mm, 7mm, the triangle bottom length of the smaller minor matters of size and
Height is respectively 12mm, 15mm and 12mm, 6mm.The a length of 9.15mm in bottom of triangular connection structure, a height of 15mm.
Again by printed circuit board (PCB) (PCB) technology of use, also produced two triangles from phase shift broadband entelechy
Change the prototype in kind of cross dipole antenna.Emulation and test comparison figure of the wherein Fig. 6 for this antenna reflection coefficient S11, can be with
It is 1.53GHz to 2.4GHz to find out such a beamwidth of antenna, compared with the antenna of examples detailed above 2, bandwidth broadening, such a form
The performance of antenna can meet actual requirement completely.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Any modifications, equivalent substitutions and improvements made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (4)
1. it is a kind of from the broadband circle polarized cross dipole antenna of phase shift, it is characterised in that including dielectric-slab and two dipole arms,
Two of which dipole arm is respectively printed on two faces of dielectric-slab, and the position relationship of two dipole arms is：Rotation one
It is symmetrical based on dielectric-slab with another dipole arm after dipole arm 180 degree；Dipole arm is by being mutually 90 degree of two minor matters pasters
Composition, the rectangular strip of minor matters or isosceles triangle shape；
Two minor matters length of dipole arm are different, produce 90 ° of phase differences by the length difference for adjusting two minor matters so that antenna has
Circular polarization characteristics；
Antenna feed point position is located at the center of dielectric-slab.
2. it is according to claim 1 a kind of from the broadband circle polarized cross dipole antenna of phase shift, it is characterised in that to pass through three
Angular structure connects the minor matters of dipole arm.
3. it is according to claim 1 a kind of from the broadband circle polarized cross dipole antenna of phase shift, it is characterised in that the antenna
By soft rigid coaxial feeding, the internal and external conductor of coaxial line is coupled with the dipole arm in two faces of dielectric-slab.
4. it is according to claim 1 a kind of from the broadband circle polarized cross dipole antenna of phase shift, it is characterised in that to work as minor matters
During for isosceles triangle, minor matters are the triangular structure of an isosceles triangular structure or two concatenations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354070.0A CN107275765A (en) | 2017-05-18 | 2017-05-18 | It is a kind of from the broadband circle polarized cross dipole antenna of phase shift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354070.0A CN107275765A (en) | 2017-05-18 | 2017-05-18 | It is a kind of from the broadband circle polarized cross dipole antenna of phase shift |
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| CN107275765A true CN107275765A (en) | 2017-10-20 |
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| CN201710354070.0A Pending CN107275765A (en) | 2017-05-18 | 2017-05-18 | It is a kind of from the broadband circle polarized cross dipole antenna of phase shift |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946757A (en) * | 2017-11-14 | 2018-04-20 | 西安天通电子科技有限公司 | Broadband high stability phase center anti-multipath antenna |
| CN108649339A (en) * | 2018-05-10 | 2018-10-12 | 佛山市顺德区中山大学研究院 | One kind is from phase shift dual-band dual-circular polarization cross dipole antenna |
| WO2019056386A1 (en) * | 2017-09-25 | 2019-03-28 | 华为技术有限公司 | Antenna device, and terminal apparatus |
| CN110247179A (en) * | 2019-06-20 | 2019-09-17 | 南京师范大学 | It is a kind of to can recognize the UHF near field RFID reader antenna for arbitrarily putting label |
| CN113594715A (en) * | 2021-08-02 | 2021-11-02 | 北京星英联微波科技有限责任公司 | Dual-frequency bidirectional circularly polarized dipole array antenna |
| WO2022095866A1 (en) * | 2020-11-04 | 2022-05-12 | 蓬托森思股份有限公司 | Substrate-integrated circularly polarized electromagnetic radiation structure and array |
| CN114944555A (en) * | 2022-06-13 | 2022-08-26 | 南京邮电大学 | Sector dipole circularly polarized antenna |
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| JPH06177635A (en) * | 1992-12-07 | 1994-06-24 | Mitsubishi Electric Corp | Cross dipole antenna system |
| CN202662787U (en) * | 2012-06-01 | 2013-01-09 | 中国计量学院 | Double-triangle coplanar wideband microstrip antenna |
| CN103219595A (en) * | 2013-01-28 | 2013-07-24 | 零八一电子集团有限公司 | Circularly polarized antenna array having spinning characteristic in space structure |
| CN103474765A (en) * | 2013-09-16 | 2013-12-25 | 深圳大学 | Circular polarization crossed dipole antenna and manufacturing method thereof |
| CN104466394A (en) * | 2013-09-12 | 2015-03-25 | 启碁科技股份有限公司 | Broadband antenna |
| CN106684543A (en) * | 2016-12-08 | 2017-05-17 | 华南理工大学 | Low-profile, bandwidth, circularly polarized cross-dipole antenna |
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2017
- 2017-05-18 CN CN201710354070.0A patent/CN107275765A/en active Pending
Patent Citations (6)
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| JPH06177635A (en) * | 1992-12-07 | 1994-06-24 | Mitsubishi Electric Corp | Cross dipole antenna system |
| CN202662787U (en) * | 2012-06-01 | 2013-01-09 | 中国计量学院 | Double-triangle coplanar wideband microstrip antenna |
| CN103219595A (en) * | 2013-01-28 | 2013-07-24 | 零八一电子集团有限公司 | Circularly polarized antenna array having spinning characteristic in space structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056386A1 (en) * | 2017-09-25 | 2019-03-28 | 华为技术有限公司 | Antenna device, and terminal apparatus |
| US10985458B2 (en) | 2017-09-25 | 2021-04-20 | Huawei Technologies Co., Ltd. | Antenna apparatus and terminal device |
| CN107946757A (en) * | 2017-11-14 | 2018-04-20 | 西安天通电子科技有限公司 | Broadband high stability phase center anti-multipath antenna |
| CN108649339A (en) * | 2018-05-10 | 2018-10-12 | 佛山市顺德区中山大学研究院 | One kind is from phase shift dual-band dual-circular polarization cross dipole antenna |
| CN108649339B (en) * | 2018-05-10 | 2021-04-06 | 佛山市顺德区中山大学研究院 | Self-phase-shift dual-frequency dual-circular polarization crossed dipole antenna |
| CN110247179A (en) * | 2019-06-20 | 2019-09-17 | 南京师范大学 | It is a kind of to can recognize the UHF near field RFID reader antenna for arbitrarily putting label |
| CN110247179B (en) * | 2019-06-20 | 2024-05-03 | 南京师范大学 | UHF near field RFID reader antenna capable of identifying randomly placed tags |
| WO2022095866A1 (en) * | 2020-11-04 | 2022-05-12 | 蓬托森思股份有限公司 | Substrate-integrated circularly polarized electromagnetic radiation structure and array |
| CN113594715A (en) * | 2021-08-02 | 2021-11-02 | 北京星英联微波科技有限责任公司 | Dual-frequency bidirectional circularly polarized dipole array antenna |
| CN114944555A (en) * | 2022-06-13 | 2022-08-26 | 南京邮电大学 | Sector dipole circularly polarized antenna |
| CN114944555B (en) * | 2022-06-13 | 2023-12-08 | 南京邮电大学 | Sector dipole circularly polarized antenna |
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Application publication date: 20171020 |