CN107910648A - A kind of low section double frequency-band omnidirectional circular-polarized antenna - Google Patents
A kind of low section double frequency-band omnidirectional circular-polarized antenna Download PDFInfo
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- CN107910648A CN107910648A CN201711058891.6A CN201711058891A CN107910648A CN 107910648 A CN107910648 A CN 107910648A CN 201711058891 A CN201711058891 A CN 201711058891A CN 107910648 A CN107910648 A CN 107910648A
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- circular
- polarized antenna
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- radiation patch
- double frequency
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- 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
-
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to omnidirectional circular-polarized antenna, is specifically a kind of low section double frequency-band omnidirectional circular-polarized antenna.Present invention mainly solves existing omnidirectional circular-polarized antenna volume is larger, and the technical problem of Circular polarized omni-directional can not be realized on the multi-party plane of double frequency-band.The present invention is achieved by the following technical solutions：A kind of low section double frequency-band omnidirectional circular-polarized antenna, wherein：The low section double frequency-band omnidirectional circular-polarized antenna is made of medium substrate, radiation patch and earth plate, and the radiation patch and earth plate are mounted on the upper and lower surface of the medium substrate respectively；Coaxial feed hole is equipped with medium substrate, radiation patch and earth plate center opposite position；The radiation patch is made of a circular radiator and six microstrip lines, and the earth plate is made of six metal tapes.The present invention is rational in infrastructure, efficiently solves existing omnidirectional circular-polarized antenna can not realize the technical problem of Circular polarized omni-directional on the multi-party plane of two-band, suitable for wireless communication.
Description
Technical field
The invention belongs to antenna technical field, and in particular to a kind of low section double frequency-band omnidirectional circular-polarized antenna.
Background technology
With the fast development of wireless communication technique, omnidirectional circular-polarized antenna has omnidirectional radiation characteristic and circle at the same time because of it
Polarization performance, has caused the highest attention of people.The circular polarisation performance of antenna can realize the full side of radio wave signal
Position covers and receives the arbitrarily polarized incidence wave of any direction.In addition, the circular polarized antenna of omnidirectional radiation can be applied to height
In speed movement or rotating communication equipment.As it can be seen that omnidirectional circular-polarized antenna has broad application prospects.
In recent years, numerous scholars propose the design method of a variety of omnidirectional circular-polarized antennas.Such as in antenna Rectangular Enclosure with Participating Media
Diagonal and side wall on etch gap；Using the back-to-back rectangular patch of coplanar wave guide feedback；The dipole fed by same phase
Array etc. is formed with zero phase-shift Microstrip Loop.It is complicated but the above-mentioned general volume of antenna is larger, and it is only limitted to single-frequency design.
The content of the invention
The present invention is larger in order to solve existing omnidirectional circular-polarized antenna volume, and can not be realized on the multi-party plane of double frequency-band
A kind of technical problem of Circular polarized omni-directional, there is provided low section double frequency-band omnidirectional circular-polarized antenna.
The present invention adopts the following technical scheme that realization：
A kind of low section double frequency-band omnidirectional circular-polarized antenna, wherein：The low section double frequency-band omnidirectional circular-polarized antenna by
Medium substrate, radiation patch and earth plate composition, the radiation patch and earth plate are mounted on the upper of the medium substrate respectively
Surface and lower surface；Coaxial feed hole is equipped with medium substrate, radiation patch and earth plate center opposite position；
The radiation patch is made of a circular radiator and six microstrip lines, and six microstrip lines are uniformly located at circle
Shape radiator circumferencial direction, one end of six microstrip lines are connected with circular radiator respectively；Along micro- on each microstrip line
It is equal that strip length direction is equipped with the distance between four dumbbell shape hollow outs, adjacent dumbbell shape hollow out；
The earth plate is made of six metal tapes, and one end of six metal tapes is connected with each other, and the other end is circumferentially
Direction is uniformly scattered, and is equipped with four narrow slots in the middle part of the metal tape, another end margin of metal tape is put down along clockwise direction
Row is equipped with two stubs；
The medium substrate is hexagonal structure, and six microstrip lines and six metal tapes are each provided at pair of medium substrate
On linea angulata, the dumbbell shape hollow out is overlapped with the projected position of narrow slot.
The present invention is constituted similar negative by etching dumbbell shape hollow out on the microstrip line, narrow slot being etched on metal tape
Magnetic conductivity transmission line structure, so as to fulfill zero and first order double-frequency resonance (- 10-dB impedance bandwidths for 2.27-2.48GHz and
3.34-3.6GHz)；By setting two strip stubs circumferentially extended clockwise arranged in parallel in metal strip edge,
A horizontal polarization field can have been encouraged, the vertical polarization field encouraged with similar negative magnetoconductivity transmission line is mutually orthogonal, so that
Antenna is set to realize Circular polarized omni-directional in the multi-party plane of two-band, the 3-dB axial ratio bandwidths of two frequency ranges are respectively 2.3-
2.58GHz and 3.32-3.58GHz.
Compared with prior art, the present invention it is rational in infrastructure, efficiently solve existing omnidirectional circular-polarized antenna can not be in double frequency
The technical problem of Circular polarized omni-directional is realized on Duan Duofang planes, suitable for wireless communication.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the bottom view of Fig. 1.
Fig. 4 is of the invention | S11| schematic diagram.
Fig. 5 is that the present invention existsWhen different orientations axis compare schematic diagram.
Fig. 6 is that axis of the present invention when frequency is 2.4GHz and 3.5GHz on different azimuth angle plane compares schematic diagram.
Fig. 7 be the present invention in θ=40 ° andWhen gain schematic diagram.
Fig. 8 is that the present invention exists when frequency is 2.4GHzThe antenna pattern in pitching face.
Fig. 9 be when frequency is 2.4GHz the present invention in the antenna pattern of θ=40 ° azimuth plane.
Figure 10 is that the present invention exists when frequency is 3.5GHzThe antenna pattern in pitching face.
Figure 11 be when frequency is 3.5GHz the present invention in the antenna pattern of θ=40 ° azimuth plane.
In Fig. 1-Fig. 3：1- radiation patch, 2- medium substrates, 3- earth plates, 4- circular radiators, 5- microstrip lines, 6- dumbbells
Type hollow out, 7- metal tapes, 8- narrow slots, 9- stubs, 10- coaxial feeds hole.
Embodiment
Clear, complete description is carried out to technical scheme below in conjunction with drawings and examples.
As shown in Figure 1 to Figure 3, a kind of low section double frequency-band omnidirectional circular-polarized antenna, wherein：The low section double frequency-band is complete
It is made of to circular polarized antenna medium substrate 2, radiation patch 1 and earth plate 3, the radiation patch 1 and earth plate 3 mount respectively
In the upper and lower surface of the medium substrate 2；At 3 center opposite position of medium substrate 2, radiation patch 1 and earth plate
Equipped with coaxial feed hole 10；
The radiation patch 1 is made of a circular radiator 4 and six microstrip lines 5, and six microstrip lines 5 are uniformly set
In 4 circumferencial direction of circular radiator, one end of six microstrip lines 5 is connected with circular radiator 4 respectively；Each microstrip line
It is equal equipped with the distance between four dumbbell shape hollow outs 6, adjacent dumbbell shape hollow out 6 along 5 length direction of microstrip line on 5；
The earth plate 3 is made of six metal tapes 7, and one end of six metal tapes 7 is connected with each other, other end edge circle
Circumferential direction is uniformly scattered, and the middle part of metal tape 7 is equipped with four narrow slots 8, and 7 another end margin of metal tape edge is square clockwise
Two stubs 9 are equipped with to parallel；
The medium substrate 2 is hexagonal structure, and six microstrip lines 5 and six metal tapes 7 are each provided at medium substrate 2
Diagonal on, the dumbbell shape hollow out 6 is overlapped with the projected position of narrow slot 8.
The operation principle of the present invention is as follows：It etched the microstrip line 5 of dumbbell shape hollow out 6 and etched the metal of narrow slot 8
Band 7 may be constructed similar negative magnetoconductivity transmission line structure, realize zero and first order double-frequency resonance；The parallel strip at 7 edge of metal tape
Shape stub 9 can produce a horizontal polarization electric fieldSimilar negative magnetoconductivity transmission line can produce a vertical polarization electricity
Field Eθ；By adjusting the quantity and size of strip stub 9, it can cause the two orthogonal electric fieldsAnd EθWith phase
Same amplitude, and 90 ° of phase difference is produced, so as to can realize omnidirectional on the above-mentioned multi-party plane of zero and first order two-band
Circular polarisation.
Fig. 4 is double frequency-band omnidirectional circular-polarized antenna of the present invention | S11| schematic diagram.As seen in Figure 4：Antenna impedance
Bandwidth (| S11|<- 10dB) it is respectively that (relative bandwidth is by 2.27-2.48GHz (relative bandwidth 8.8%) and 3.34-3.6GHz
7.5%).
Fig. 5 exists for the present inventionWhen different orientations axis than schematic diagram, wherein, curve 1,2,3,4 represents respectively
Antenna is in θ=30 °, 40 °, 50 °, 60 ° of axis ratio.As seen in Figure 5：Antenna is at θ=30 °, 40 °, the angles of 50 ° and 60 °
Dual-band circular polarization is all realized on degree, when θ=30 °, the 3-dB axial ratio bandwidths of its 2.4GHz frequency range are most narrow, are 2.38-
2.52GHz, but the WLAN bandwidth (2.4-2.4835GHz) required by IEEE802.11b standards can be still covered, meanwhile, its
The 3-dB axial ratio bandwidths of 3.5GHz frequency ranges are 3.32-3.58GHz；With the increase of θ, the axial ratio bandwidth of 2.4GHz frequency ranges broadens；
When θ=40 ° and 50 °, its bandwidth is respectively 2.3-2.58GHz and 2.15-2.75GHz；When θ=60 °, in 2.03-
In the range of 3.5GHz, axis is than being both less than 3dB.
Fig. 6 is axis ratio schematic diagram of the present invention when frequency is 2.4GHz and 3.5GHz on different azimuth angle plane, wherein,
Curve 1,2,3,4 represents frequency respectively when being 2.4GHz, axis ratio of the antenna on θ=30 °, 40 °, 50 °, 60 ° of azimuth planes, curve
5th, 6 frequency is represented respectively when being 3.5GHz, axis ratio of the antenna on θ=30 °, 40 ° of azimuth planes.As seen in Figure 6：
2.4GHz, antenna can realize Circular polarized omni-directional in θ=30 °, 40 °, 50 ° and 60 ° of all azimuthal planes, in these planes
It is angled on axis than be respectively less than 3dB；In 3.5GHz, antenna is on θ=30 ° and 40 ° of azimuthal plane, the axis of every bit
Than being respectively less than 3dB.
Fig. 7 for the present invention in θ=40 ° andWhen gain schematic diagram.Contrast the working band in 2.3-2.5GHz
Change of the internal antenna gain in the range of -1-0.1dBic and in the working band of 3.3-3.6GHz gain in 1.6-2.3dBic
In the range of change, it is known that：Maximum gain is 2.3dBic at 3.45GHz.
Fig. 8 show present invention when frequency is 2.4GHz and existsThe antenna pattern in pitching face, wherein, curve 1,2
Left-hand circular polarization, right-handed circular polarization are represented respectively.As seen in Figure 8：Pitching face, 30 °<θ<In 60 ° of angles
Main polarization (left-hand circular polarization) radiation intensity it is almost identical, and the cross polarization (right-handed circular polarization) in the angle is smaller, main
Difference between polarization and cross polarization is more than 15dB.
Fig. 9 show the antenna pattern of present invention when frequency is 2.4GHz in θ=40 ° azimuth plane, wherein, curve 1,2
Left-hand circular polarization, right-handed circular polarization are represented respectively.As seen in Figure 9：In θ=40 ° azimuth plane, antenna has the spoke of omnidirectional
Penetrate, and cross polarization (right-handed circular polarization) is smaller.
Figure 10 show present invention when frequency is 3.5GHz and existsThe antenna pattern in pitching face, wherein, curve 1,
2 represent left-hand circular polarization, right-handed circular polarization respectively.As seen in Figure 10：Pitching face, 30 °<θ<40 ° of angles
On main polarization (left-hand circular polarization) radiation intensity it is almost identical.And the cross polarization (right-handed circular polarization) in the angle is smaller,
The main polarization difference between cross polarization is more than 20dB.
Figure 11 show the antenna pattern of present invention when frequency is 3.5GHz in θ=40 ° azimuth plane, wherein, curve 1,2
Left-hand circular polarization, right-handed circular polarization are represented respectively.As seen in Figure 11：In θ=40 ° azimuth plane, antenna has omnidirectional
Radiation, and cross polarization (right-handed circular polarization) is smaller.In addition, antenna can equally obtain on θ=30 °, 50 ° and 60 ° of azimuth planes
The radiation of omnidirectional is obtained, is not enumerated here.
The present invention can be embodied without departing from the spirit and scope of the present invention in a variety of forms, it will be appreciated that above-mentioned
Embodiment is not limited to foregoing details, and should widely be explained in claim limited range.It should be pointed out that for this
For the those of ordinary skill of technical field, without departing from the structure of the invention, some improvement can also be made and waited
Change in the range of effect, such modifications and variations also should be regarded as protection scope of the present invention.
Claims (1)
- A kind of 1. low section double frequency-band omnidirectional circular-polarized antenna, it is characterised in that：The low section double frequency-band Circular polarized omni-directional day Line is made of medium substrate (2), radiation patch (1) and earth plate (3), and the radiation patch (1) and earth plate (3) mount respectively Upper and lower surface in the medium substrate (2)；Medium substrate (2), radiation patch (1) and earth plate (3) center are opposite Answer and be equipped with coaxial feed hole (10) at position；The radiation patch (1) is made of a circular radiator (4) and six microstrip lines (5), and six microstrip lines (5) are equal Even to be located at circular radiator (4) circumferencial direction, one end of six microstrip lines (5) is connected with circular radiator (4) respectively；Institute State and be equipped with four dumbbell shape hollow outs (6) along microstrip line (5) length direction on each microstrip line (5), between adjacent dumbbell shape hollow out (6) Distance it is equal；The earth plate (3) is made of six metal tapes (7), and one end of six metal tapes (7) is connected with each other, other end edge Circumferencial direction uniformly scatters, and four narrow slots (8), another end margin edge of metal tape (7) are equipped with the middle part of the metal tape (7) It is parallel clockwise to be equipped with two stubs (9)；The medium substrate (2) is hexagonal structure, and six microstrip lines (5) and six metal tapes (7) are each provided at medium base On the diagonal of plate (2), the dumbbell shape hollow out (6) overlaps with the projected position of narrow slot (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058891.6A CN107910648B (en) | 2017-11-01 | 2017-11-01 | Low-profile dual-band omnidirectional circularly polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711058891.6A CN107910648B (en) | 2017-11-01 | 2017-11-01 | Low-profile dual-band omnidirectional circularly polarized antenna |
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| CN107910648A true CN107910648A (en) | 2018-04-13 |
| CN107910648B CN107910648B (en) | 2020-04-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808237A (en) * | 2018-06-28 | 2018-11-13 | 中国电子科技集团公司第十三研究所 | Plane omnidirectional circular-polarized antenna |
| CN109193148A (en) * | 2018-09-16 | 2019-01-11 | 复旦大学 | A kind of four frequency range Circular polarized omni-directional RECTIFYING ANTENNAs |
| CN109687092A (en) * | 2018-12-25 | 2019-04-26 | 深圳市鼎耀科技有限公司 | A kind of low section omnidirectional circular-polarized antenna |
| CN111180297A (en) * | 2020-01-03 | 2020-05-19 | 电子科技大学 | Dual-band microstrip line slow wave structure |
| CN111919337A (en) * | 2018-03-30 | 2020-11-10 | 株式会社村田制作所 | Antenna module and communication device equipped with same |
| CN113497358A (en) * | 2021-07-21 | 2021-10-12 | 德州学院 | Wide-angle dual-circularly-polarized antenna with low elevation gain enhancement and equipment |
| CN114937869A (en) * | 2022-05-05 | 2022-08-23 | 杭州电子科技大学 | Back-to-back wide-angle circularly polarized microstrip antenna and application thereof in intelligent door lock |
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| CN107104278A (en) * | 2017-04-26 | 2017-08-29 | 山西大学 | It is a kind of that there is wide axle in pitching face than the low section omnidirectional circular-polarized antenna of wave beam |
| CN107275774A (en) * | 2017-06-22 | 2017-10-20 | 山西大学 | A kind of low section omnidirectional circular-polarized antenna of wide axle than wave beam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111919337A (en) * | 2018-03-30 | 2020-11-10 | 株式会社村田制作所 | Antenna module and communication device equipped with same |
| CN108808237A (en) * | 2018-06-28 | 2018-11-13 | 中国电子科技集团公司第十三研究所 | Plane omnidirectional circular-polarized antenna |
| CN108808237B (en) * | 2018-06-28 | 2020-07-07 | 中国电子科技集团公司第十三研究所 | Planar omnidirectional circularly polarized antenna |
| CN109193148A (en) * | 2018-09-16 | 2019-01-11 | 复旦大学 | A kind of four frequency range Circular polarized omni-directional RECTIFYING ANTENNAs |
| CN109687092A (en) * | 2018-12-25 | 2019-04-26 | 深圳市鼎耀科技有限公司 | A kind of low section omnidirectional circular-polarized antenna |
| CN109687092B (en) * | 2018-12-25 | 2020-12-01 | 深圳市鼎耀科技有限公司 | Low-profile omnidirectional circularly polarized antenna |
| CN111180297A (en) * | 2020-01-03 | 2020-05-19 | 电子科技大学 | Dual-band microstrip line slow wave structure |
| CN111180297B (en) * | 2020-01-03 | 2021-03-30 | 电子科技大学 | Dual-band microstrip line slow wave structure |
| CN113497358A (en) * | 2021-07-21 | 2021-10-12 | 德州学院 | Wide-angle dual-circularly-polarized antenna with low elevation gain enhancement and equipment |
| CN113497358B (en) * | 2021-07-21 | 2022-08-12 | 德州学院 | Wide-angle dual-circularly-polarized antenna with low elevation gain enhancement and equipment |
| CN114937869A (en) * | 2022-05-05 | 2022-08-23 | 杭州电子科技大学 | Back-to-back wide-angle circularly polarized microstrip antenna and application thereof in intelligent door lock |
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