CN205178013U - Super material phased array antenna of wide angle beam scanning - Google Patents
Super material phased array antenna of wide angle beam scanning Download PDFInfo
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- CN205178013U CN205178013U CN201520900182.8U CN201520900182U CN205178013U CN 205178013 U CN205178013 U CN 205178013U CN 201520900182 U CN201520900182 U CN 201520900182U CN 205178013 U CN205178013 U CN 205178013U
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- phased array
- array antenna
- meta materials
- beam scanning
- angle beam
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- 239000000463 material Substances 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 claims description 29
- 230000005855 radiation Effects 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 6
- 230000010287 polarization Effects 0.000 abstract description 11
- 238000005388 cross polarization Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The utility model relates to a super material phased array antenna of wide angle beam scanning, this phased array antenna are planar structure, and it forms to be arranged in the cycle by a plurality of antenna element. A phased array antenna unit comprises metallic waveguide, loaded medium and feed port of the typical case. Phased array antenna battle array face top covers has super material, plays the interior impedance match's of wide angle beam sweep range effect. The utility model relates to a phased array antenna can realize sending and receiving of electromagnetic signal at the wide angle within range, improves the radiant efficiency of antenna, improves the cross polarization characteristic or the circular polarization axial ratio characteristic of radiated wave.
Description
Technical field
The phased array antenna that the utility model relates to can realize good active impedance coupling in wave beam wide-angle scanning process, thus improves the radiation efficiency of antenna system, improves the antenna pattern of antenna.This Meta Materials phased array antenna Support Line polarity electromagnetic field or electromagnetic wave of circle polarization, cross polarization characteristics or the Circular polarization ratio characteristic of radiation field are good.The utility model is applicable to the technical field such as radar detection and mobile satellite communication.
Background technology
Phased array antenna section is low, is easy to conformal with carrier, can control the sensing of radiation beam rapidly and accurately, be widely used in radar detection field, has huge application prospect at moving communicating field simultaneously.
In order to realize large-angle scanning function, there is graing lobe when avoiding wide-angle to scan in the spacing of necessary strict control antenna unit; The antenna element form of broad beam must be used; Need the mutual coupling characteristic regulating antenna element, avoid occurring scanning blind spot.
The phased array antenna of the wide-angle beam scanning of current engineer applied is main following several:
(1) microstrip antenna.This antenna element uses printed circuit board technology to be made, and section is low, convenient conformal with carrier; But this kind of antenna element beamwidth is narrow, and beam scanning is range limited.
(2) helical antenna.The natural support circular polarization of this antenna form, radiation beam is splendid in normal direction axial ratio characteristic, but broad beam axial ratio characteristic is poor, is not suitable for the beam scanning of wide angle circular polarization.And this antenna form cannot send or receive linear polarization signal.
(3) waveguide mouth antenna.In metal waveguide, use coated by dielectric technology, can the cycle of structuring the formation be reduced, still occur without graing lobe when ensureing the scanning of wave beam wide-angle.Stretch out the medium that waveguide mouth inside loads a segment length, can improve the impedance matching property of antenna.But this antenna form easily occurs scanning blind spot.
Utility model content
The utility model proposes a kind of Meta Materials phased array antenna of large-angle scanning.Directly over antenna array, be coated with Meta Materials, the wide angle impedance matching property of antenna can be improved.Meta Materials coating is made up of the metal patch of a large amount of periodic arrangement, supports dual-linear polarization ripple and double-circle polarization ripple, can improve cross polarization characteristics or the Circular polarization ratio characteristic of aerial radiation.
For realizing above-mentioned technical indicator, the technical scheme of employing is:
The Meta Materials phased array antenna 1 of large-angle scanning is a planar structure, and being arranged by some antenna element cycles forms.The loaded medium 5 that each phased array antenna unit includes metal waveguide 4 and is filled in metal waveguide, the lower port of metal waveguide 4 is feed mouth 6, the upper port of metal waveguide 4 is radiation port, it is characterized in that: above the radiation port of each phased array antenna unit, erection has Meta Materials coating 2.
Wherein, described Meta Materials coating 2 is made up of rf board 7 and multiple sub-wavelength metal paster 8, and sub-wavelength metal paster 8 is printed on the upper surface of rf board 7.
Wherein, the cycle of structuring the formation of phased array antenna unit is that sub-wavelength metal paster is structured the formation the integral multiple in cycle.
Wherein, the gap between Meta Materials coating and radiation port is 0.02 ~ 0.2 operation wavelength.
Wherein, between Meta Materials coating and radiation port, be also provided with layer of support material 3, the upper surface of the lower surface laminating layer of support material 3 of Meta Materials coating, the lower surface laminating radiation actinal surface of layer of support material 3.
Wherein, the dielectric constant range of described layer of support material 3 is 1 ~ 1.1, and loss tangent is less than 0.01.
Wherein, loaded medium 5 upper surface and radiation actinal surface flush.
The utility model is compared to background technology, and technological merit is:
(1) Meta Materials coating 2 can suppress surface wave mode, effectively reduces the mutual coupling between antenna element.Compare medium section and extend matching method, the utility model can realize more excellent impedance matching whole without graing lobe scanning area, and return loss is lower, and antenna radiation efficiency is higher.
(2) on Meta Materials coating 2, the metal patch symmetry of printing is high, supports dual-linear polarization or double-circle polarization electromagnetic signal.
(2) Meta Materials coating 2 adopts printed circuit board technology to be made, and technical maturity is stablized, and machining accuracy is high, and structure is simple, is convenient to install fix.
(3) tangent plane of loaded medium 5 is concordant with metal waveguide 4 actinal surface, is convenient to processing and fabricating.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of phased array antenna unit.
Fig. 3 is the structural representation of Meta Materials coating.
Embodiment
Below, the utility model is described in further detail for composition graphs 1 to Fig. 3.
A Meta Materials phased array antenna for large-angle scanning, comprises multiple phased array antenna unit, and phased array antenna unit is structured the formation flexible form, both can adopt square structuring the formation, triangle also can be adopted to structure the formation.The loaded medium 5 that each phased array antenna unit includes metal waveguide 4 and is filled in metal waveguide, the lower port of metal waveguide 4 is feed mouth 6, the upper port of metal waveguide 4 is radiation port, and above the radiation port of each phased array antenna unit, erection has Meta Materials coating 2.Described Meta Materials coating 2 is made up of rf board 7 and multiple sub-wavelength metal paster 8, and sub-wavelength metal paster 8 is printed on the upper surface of rf board 7.Cycle of structuring the formation of phased array antenna unit is that sub-wavelength metal paster is structured the formation the integral multiple in cycle.Loaded medium 5 can select polytetrafluoroethylene injection molded, and medium upper surface and radiation actinal surface flush.
As an embodiment, air between Meta Materials coating and radiation port, gap is between the two 0.02 ~ 0.2 operation wavelength.
As another embodiment, between Meta Materials coating and radiation port, be also provided with layer of support material 3, the upper surface of the lower surface laminating layer of support material 3 of Meta Materials coating, the lower surface laminating radiation actinal surface of layer of support material 3.The dielectric constant range of described layer of support material 3 is 1 to 1.1, and loss tangent is less than 0.01.
The design cycle of Meta Materials coating is as follows:
(1) EFFECTIVE MEDIUM THEORY and the material parameter of Computational Electromagnetic Methods design required for accomplished wide angle impedance matching is used.
(2) structural parameters required for the long metal patch acquisition of the sub-micro of horizontal cycle arrangement are used.
(3) by regulating the overall dimension of metal patch, changing the Meta Materials thickness of equivalence, electromagnetic signal can be made at each azimuth plane, under different luffing angle, all there is good wave transmission efficiency.
The concise and to the point operation principle of this Meta Materials phased array antenna is as follows:
This antenna can be used for reception antenna or transmitting antenna.For transmitting antenna, the transport process of its electromagnetic signal is: radiofrequency signal is carried out metal waveguide inside through feed mouth 6 and formed electromagnetic field signal.Electromagnetic field signal arrives radiation actinal surface place, through Meta Materials coating 2 Net long wave radiation in free space.By changing the phase difference between adjacent cells, the sensing of radiation beam accurately can be controlled.
Wherein the action principle of Meta Materials coating 2 is: this coating is equivalent to a kind of anisotropic medium, and it can suppress the appearance of surface wave mode, thus realizes the impedance matching in wide angular region.Meanwhile, Meta Materials coating is made up of the metal patch structure of weak resonance, and the thermal losses in broad frequency range is low, little to the SNR influence of signal system.
Claims (7)
1. the Meta Materials phased array antenna of a wide-angle beam scanning, comprise multiple phased array antenna unit, each phased array antenna unit includes metal waveguide (4) and is filled in the loaded medium (5) in metal waveguide, the lower port of metal waveguide (4) is feed mouth, the upper port of metal waveguide (4) is radiation port, it is characterized in that: above the radiation port of each phased array antenna unit, erection has Meta Materials coating (2).
2. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 1, it is characterized in that: described Meta Materials coating (2) is made up of rf board (7) and multiple sub-wavelength metal paster (8), and sub-wavelength metal paster (8) is printed on the upper surface of rf board (7).
3. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 2, is characterized in that: cycle of structuring the formation of phased array antenna unit is that sub-wavelength metal paster is structured the formation the integral multiple in cycle.
4. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 1, is characterized in that: the gap between Meta Materials coating and radiation port is 0.02 ~ 0.2 operation wavelength.
5. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 1, it is characterized in that: between Meta Materials coating and radiation port, be also provided with layer of support material (3), the upper surface of lower surface laminating layer of support material (3) of Meta Materials coating, the lower surface laminating radiation actinal surface of layer of support material (3).
6. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 5, is characterized in that: the dielectric constant range of described layer of support material (3) is 1 ~ 1.1, and loss tangent is less than 0.01.
7. the Meta Materials phased array antenna of a kind of wide-angle beam scanning according to claim 1, is characterized in that: loaded medium (5) upper surface and radiation actinal surface flush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900182.8U CN205178013U (en) | 2015-11-11 | 2015-11-11 | Super material phased array antenna of wide angle beam scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900182.8U CN205178013U (en) | 2015-11-11 | 2015-11-11 | Super material phased array antenna of wide angle beam scanning |
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| Publication Number | Publication Date |
|---|---|
| CN205178013U true CN205178013U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520900182.8U Expired - Fee Related CN205178013U (en) | 2015-11-11 | 2015-11-11 | Super material phased array antenna of wide angle beam scanning |
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| CN (1) | CN205178013U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356054A (en) * | 2015-11-11 | 2016-02-24 | 中国电子科技集团公司第五十四研究所 | Metamaterial phased array antenna with wide-angle beam scanning |
| CN110034413A (en) * | 2019-05-24 | 2019-07-19 | 电子科技大学 | A kind of unobstructed wave beam deflection antenna on the super surface of load |
| CN111427013A (en) * | 2019-01-09 | 2020-07-17 | 华雷科技股份有限公司 | Radar device with main beam wave width reducing and side beam inhibiting function |
| CN112909519A (en) * | 2019-11-19 | 2021-06-04 | 北京道古视界科技有限公司 | Directional diagram programmable metamaterial array antenna system |
-
2015
- 2015-11-11 CN CN201520900182.8U patent/CN205178013U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356054A (en) * | 2015-11-11 | 2016-02-24 | 中国电子科技集团公司第五十四研究所 | Metamaterial phased array antenna with wide-angle beam scanning |
| CN111427013A (en) * | 2019-01-09 | 2020-07-17 | 华雷科技股份有限公司 | Radar device with main beam wave width reducing and side beam inhibiting function |
| CN110034413A (en) * | 2019-05-24 | 2019-07-19 | 电子科技大学 | A kind of unobstructed wave beam deflection antenna on the super surface of load |
| CN112909519A (en) * | 2019-11-19 | 2021-06-04 | 北京道古视界科技有限公司 | Directional diagram programmable metamaterial array antenna system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |