CN105356054A - Metamaterial phased array antenna with wide-angle beam scanning - Google Patents
Metamaterial phased array antenna with wide-angle beam scanning Download PDFInfo
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- CN105356054A CN105356054A CN201510764831.0A CN201510764831A CN105356054A CN 105356054 A CN105356054 A CN 105356054A CN 201510764831 A CN201510764831 A CN 201510764831A CN 105356054 A CN105356054 A CN 105356054A
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Abstract
The present invention relates to a metamaterial phased array antenna with wide-angle beam scanning. The phased array antenna is a planar structure and is formed by periodically arranging a plurality of antenna units. A typical phased array antenna unit is formed by a metal waveguide, a loading media and a feeder port. The array plane of the phased array antenna is covered by a metamaterial to play the role of impedance matching in a wide-angle beam scanning range. According to the phased array antenna in the invention, the sending and receiving of an electromagnetic signal can be realized in the wide-angle range, the radiation efficiency of the antenna is improved, and the cross polarization characteristic or circular polarization axial ratio characteristic of radiation waves is improved.
Description
Technical field
The phased array antenna that the present invention 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 present invention 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.
Summary of the invention
The present invention 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 present invention 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 present invention 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 invention.
Fig. 2 is the structural representation of phased array antenna unit.
Fig. 3 is the structural representation of Meta Materials coating.
Embodiment
Below, the invention will be further described 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 large-angle 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 large-angle 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 large-angle 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 large-angle 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 large-angle 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 large-angle 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 large-angle scanning according to claim 1, is characterized in that: loaded medium (5) upper surface and radiation actinal surface flush.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510764831.0A CN105356054A (en) | 2015-11-11 | 2015-11-11 | Metamaterial phased array antenna with wide-angle beam scanning |
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| CN201510764831.0A CN105356054A (en) | 2015-11-11 | 2015-11-11 | Metamaterial phased array antenna with wide-angle beam scanning |
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Cited By (8)
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| CN106532224A (en) * | 2016-10-14 | 2017-03-22 | 清华大学 | Reflection and transmission bidirectional integrated high gain antenna |
| CN107565222A (en) * | 2017-08-07 | 2018-01-09 | 西安电子科技大学 | ENZ Meta Materials waveguides for the transmission of TM polarized waves wide-angle |
| CN111989823A (en) * | 2018-10-12 | 2020-11-24 | 华为技术有限公司 | Low-profile packaged antenna |
| CN112490680A (en) * | 2020-11-18 | 2021-03-12 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Metamaterial broadband wide-angle scanning impedance matching layer |
| CN112582783A (en) * | 2020-10-27 | 2021-03-30 | 西安交通大学 | Integrated AIP assembly, terminal equipment and terminal equipment shell |
| CN114122736A (en) * | 2022-01-26 | 2022-03-01 | 华南理工大学 | Omnidirectional coverage broadband circularly polarized multi-beam antenna array |
| WO2023070350A1 (en) * | 2021-10-27 | 2023-05-04 | 京东方科技集团股份有限公司 | Antenna |
| WO2023159625A1 (en) * | 2022-02-28 | 2023-08-31 | 京东方科技集团股份有限公司 | Phased array antenna |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532224A (en) * | 2016-10-14 | 2017-03-22 | 清华大学 | Reflection and transmission bidirectional integrated high gain antenna |
| CN106532224B (en) * | 2016-10-14 | 2019-07-02 | 清华大学 | Reflection/transmission two-way integral high-gain aerial |
| CN107565222A (en) * | 2017-08-07 | 2018-01-09 | 西安电子科技大学 | ENZ Meta Materials waveguides for the transmission of TM polarized waves wide-angle |
| CN107565222B (en) * | 2017-08-07 | 2020-08-04 | 西安电子科技大学 | ENZ metamaterial waveguide for TM polarized wave large-angle transmission |
| CN111989823A (en) * | 2018-10-12 | 2020-11-24 | 华为技术有限公司 | Low-profile packaged antenna |
| CN111989823B (en) * | 2018-10-12 | 2021-12-28 | 华为技术有限公司 | Low-profile packaged antenna |
| CN112582783A (en) * | 2020-10-27 | 2021-03-30 | 西安交通大学 | Integrated AIP assembly, terminal equipment and terminal equipment shell |
| CN112490680A (en) * | 2020-11-18 | 2021-03-12 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Metamaterial broadband wide-angle scanning impedance matching layer |
| WO2023070350A1 (en) * | 2021-10-27 | 2023-05-04 | 京东方科技集团股份有限公司 | Antenna |
| CN114122736A (en) * | 2022-01-26 | 2022-03-01 | 华南理工大学 | Omnidirectional coverage broadband circularly polarized multi-beam antenna array |
| WO2023159625A1 (en) * | 2022-02-28 | 2023-08-31 | 京东方科技集团股份有限公司 | Phased array antenna |
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Application publication date: 20160224 |
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