CN106410419B - A kind of low graing lobe flat plate array antenna based on Meta Materials technology - Google Patents
A kind of low graing lobe flat plate array antenna based on Meta Materials technology Download PDFInfo
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- CN106410419B CN106410419B CN201610816515.8A CN201610816515A CN106410419B CN 106410419 B CN106410419 B CN 106410419B CN 201610816515 A CN201610816515 A CN 201610816515A CN 106410419 B CN106410419 B CN 106410419B
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- meta materials
- flat plate
- array antenna
- cover board
- plate array
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- 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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a kind of low graing lobe flat plate array antenna based on Meta Materials technology.The flat plate array antenna of large period group battle array, antenna pattern will appear graing lobe, so as to cause antenna efficiency decline.The present invention devises a kind of Meta Materials cover board, and loads on above this kind of flat plate array antenna front.The substrate of Meta Materials cover board is low loss dielectric plate, the longitudinal hole of the periodic arrangement containing a large amount of sub-wavelengths on cover board.The Meta Materials cover board is able to suppress the graing lobe level of flat plate array antenna, improves the gain and aperture efficiency of flat plate array antenna, and can be with wideband operation.
Description
Technical field
The invention belongs to satellite communication, the fields such as confrontation, mobile communication are scouted, are related to a kind of based on the low of Meta Materials technology
Graing lobe flat plate array antenna.
Background technique
Flat plate array antenna is widely used in mobile satellite communication and scouts in confrontation.The radiation port face of flat plate array antenna
For plane, it is arranged by antenna element two-dimension periodic and is formed, and the width and height of antenna array can be with flexible configurations.Compared to reflection
Surface antenna, flat plate array antenna 4:1 easy to accomplish or even bigger the ratio of width to height.The antenna of this form is suitble to be loaded into mobile load
In body platform, the technical advantage with low profile.
The group battle array period of flat plate array antenna is frequently larger than a wavelength.The flat plate array antenna of large period group battle array have with
Lower advantage: feeding network design is simple, insertion loss is small；Under same swept area, the plate battle array of large period group battle array is used
Array antenna, antenna element number is few, and processing cost is low, light-weight.
The disadvantage of the flat plate array antenna of large period group battle array are as follows: the antenna pattern of antenna will appear graing lobe, lead to antenna
Efficiency decline.
Cross metal wire structure is loaded on into array antenna mouth face, the radiation graing lobe of antenna can be substantially reduced.The program
It is successfully applied to the flat plate array antenna of Ku satellite communication frequency range, reception frequency is 12.25-12.75GHz, transmitting frequency
Rate is 14.0-14.5GHz.The limitation of this technical solution is that bandwidth of operation is narrow, its applicable relative bandwidth is about 20%.It is right
The flat plate array antenna of Ka satellite communication frequency range is worked in, reception frequency is 19.6-21.2GHz, tranmitting frequency 29.4-
31.0GHz, relative bandwidth about 50%, the technical solution of cross hair design are no longer applicable in.
Summary of the invention
It is an object of the invention to design a kind of low graing lobe flat plate array antenna based on Meta Materials technology, which includes
The flat plate array antenna of large period group battle array and load on the Meta Materials cover board at flat plate array antenna radiation port face.Meta Materials cover board
The field distribution in adjustable radiation port face reduces the graing lobe level of antenna pattern, improves gain and the mouth of flat plate array antenna
Face efficiency.
The technical solution adopted by the present invention are as follows:
A kind of low graing lobe flat plate array antenna based on Meta Materials technology, the flat plate array antenna 1 comprising large period group battle array
With load on the Meta Materials cover board 2 on 1 radiation port face of flat plate array antenna；The flat plate array antenna 1 is by multiple plate battle arrays
Array antenna unit composition；The Meta Materials cover board 2 is formed by the structural unit periodic arrangement of multiple 90 ° of rotational symmetries；
Each structural unit includes multiple airports opened up along antenna array normal direction, and all airports annularly arrange, airport
Size become larger from inner ring to outer ring；The repetition period of the structural unit of Meta Materials cover board 2 and flat plate array antenna unit
The group battle array period it is consistent.
Wherein, the substrate of the Meta Materials cover board 2 is low-loss microwave-medium plate.
Wherein, the upper surface of the Meta Materials cover board 2 is additionally provided with upper layer Meta Materials cover board, upper layer Meta Materials cover board and super material
Expect that 2 structure of cover board is identical.
Wherein, there are the air gap 3 between upper layer Meta Materials cover board and lower layer's Meta Materials cover board, the height of the air gap is
0.05-0.12 wavelength.
The present invention is compared to background technique, advantage are as follows:
(1) technical solution based on Meta Materials being capable of wideband operation.The opposite bandwidth of operation of the program is more than 1.6 frequencys multiplication.
When the program is applied to satellite communication field, the bandwidth requirement of Ka band satellite communication can satisfy.
(2) technical solution based on Meta Materials can adapt to the bigger group battle array period.It is greater than two wavelength when group battle array period
When, the technical solution is still feasible.
Detailed description of the invention
Fig. 1 is the flat plate array antenna schematic diagram for not loading Meta Materials cover board.
Fig. 2 is the side view for loading the flat plate array antenna of Meta Materials cover board.
Fig. 3 is the top view of Meta Materials cover board, corresponding 3 × 3 flat plate array antenna units.
Specific embodiment
Below with reference to Fig. 1 to Fig. 3, the invention will be further described.But protection scope of the present invention is not limited to the reality
Apply example.
The present invention proposes a kind of low graing lobe flat plate array antenna based on Meta Materials technology, by the Meta Materials lid of special designing
Plate loads at the radiation port face of the flat plate array antenna of large period group battle array.The substrate of Meta Materials cover board is low-loss microwave dielectric
Plate, such as polytetrafluoroethylene (PTFE), polystyrene, media plate contains the air along antenna array normal direction of a large amount of periodic arrangements
Hole.The field distribution in the adjustable radiation port face of Meta Materials cover board improves plate battle array to reduce the graing lobe level of antenna pattern
The gain and aperture efficiency of array antenna.The metamaterial modular construction that cover board uses is disresonance unit, has broadband character.The hair
It is bright to can be applied to Ka satellite communication frequency range, while covering reception and transmitting frequency range.
As shown in Figure 1, not loading the flat plate array antenna 1 of Meta Materials cover board by metal waveguide mouth as one embodiment
Period arranges, and the flat plate array antenna 1 is made of multiple flat plate array antenna units；Flat plate array antenna has work
Make bandwidth, processing technology maturation, the characteristics such as high power can be born.Flat plate array antenna is structured the formation using large period, to work frequency
The high end frequency of band, electric size are more than 2 wavelength.The feeding network of this flat plate array antenna is simple, and design difficulty is small.It is flat
The antenna element of plate array antenna can select all kinds of antenna forms such as loudspeaker, micro-strip, Waveguide slot.Wherein, bell-mouth antenna
It is wide with working band, processing technology is mature, can bear the characteristics such as high power, be most widely used in engineering.
As shown in Fig. 2, the top of Meta Materials cover board 2 is additionally provided with upper layer Meta Materials cover board, Meta Materials cover board 2 loads on plate
Array antenna radiation port face, the lower surface of Meta Materials cover board 2 and the upper surface of flat plate array antenna 1 fit closely；The super material in upper layer
Expect cover board it is identical with 2 structure of Meta Materials cover board, corresponding setting above and below structural unit, between there are the air gap 3, the air gaps
Height dimension be 0.05-0.12 wavelength, this double layer design can reduce return loss caused by Meta Materials cover board, favorably
Impedance matching when realizing electromagenetic wave radiation.
As shown in figure 3, every layer of Meta Materials cover board 2 is formed by the structural unit periodic arrangement of multiple 90 ° of rotational symmetries,
The repetition period of structural unit is consistent with the group battle array period of flat plate array antenna unit；Each structural unit is along antenna array normal
Direction offers multiple airports, and airport annularly arranges, and the size of airport becomes larger from inner ring to outer ring, this Jie
The metamaterial modular construction of matter open-cellular form has disresonance characteristic, can be with wideband operation.As one embodiment, Meta Materials lid
It is low-loss microwave-medium such as polytetrafluoroethylene (PTFE), polystyrene that the substrate of plate, which is selected, which can be in high frequency condition
Lower work, for Dielectric loss tangent less than 0.1%, the Insertion Loss for introducing antenna system is small, and performance is stablized, and there is good environment to adapt to
Property；Embodiment airport is circular hole, is processed using mechanical means, technical maturity.3 lower right corner of implementation example figure indicates excess of export with dotted line
One array element of material cover board, the component units of Meta Materials cover board include the air hole array of 4 side's annulars.From inner ring to
The size of outer ring, airport becomes larger from small.
Claims (4)
1. a kind of low graing lobe flat plate array antenna based on Meta Materials technology, the flat plate array antenna (1) comprising large period group battle array,
The flat plate array antenna (1) is made of multiple flat plate array antenna units；It is characterized by also including load on plate battle array
Lower layer's Meta Materials cover board (2) on array antenna (1) radiation port face；Lower layer's Meta Materials cover board (2) is by multiple 90 ° rotations pair
The structural unit periodic arrangement of title property forms；Each structural unit includes multiple air opened up along antenna array normal direction
Hole, all airports annularly arrange, and the size of airport becomes larger from inner ring to outer ring；Lower layer's Meta Materials cover board (2)
The repetition period of structural unit is consistent with the group battle array period of flat plate array antenna unit.
2. a kind of low graing lobe flat plate array antenna based on Meta Materials technology according to claim 1, it is characterised in that: institute
The substrate for stating lower layer's Meta Materials cover board (2) is low-loss microwave-medium plate.
3. a kind of low graing lobe flat plate array antenna based on Meta Materials technology according to claim 1, it is characterised in that: institute
The upper surface for stating lower layer's Meta Materials cover board (2) is additionally provided with upper layer Meta Materials cover board, upper layer Meta Materials cover board and lower layer's Meta Materials lid
Plate (2) structure is identical.
4. a kind of low graing lobe flat plate array antenna based on Meta Materials technology according to claim 3, it is characterised in that: on
There are the air gap (3) between layer Meta Materials cover board and lower layer's Meta Materials cover board (2), the height of the air gap is 0.05-0.12
A wavelength.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816515.8A CN106410419B (en) | 2016-09-12 | 2016-09-12 | A kind of low graing lobe flat plate array antenna based on Meta Materials technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816515.8A CN106410419B (en) | 2016-09-12 | 2016-09-12 | A kind of low graing lobe flat plate array antenna based on Meta Materials technology |
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| Publication Number | Publication Date |
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| CN106410419A CN106410419A (en) | 2017-02-15 |
| CN106410419B true CN106410419B (en) | 2019-05-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945897A (en) * | 2006-10-17 | 2007-04-11 | 东南大学 | Loaded filter antenna based on bellmouthing face frequency selective surface |
| CN103151579A (en) * | 2013-03-19 | 2013-06-12 | 中国科学院空间科学与应用研究中心 | Broadband sub-millimeter wave frequency selection surface based on fractal structure |
| CN103762423A (en) * | 2014-01-24 | 2014-04-30 | 中国科学院光电技术研究所 | Reflection array antenna beam scanning antenna based on rotary phase shift surface technology |
| CN103762425A (en) * | 2013-11-04 | 2014-04-30 | 航天恒星科技有限公司 | Double-frequency double-circular polarization common-caliber antenna array for two-dimensional phase control scanning |
| WO2014160322A1 (en) * | 2013-03-14 | 2014-10-02 | Impinj, Inc. | Powering rfid tags using multiple systhesized-beam rfid readers |
-
2016
- 2016-09-12 CN CN201610816515.8A patent/CN106410419B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945897A (en) * | 2006-10-17 | 2007-04-11 | 东南大学 | Loaded filter antenna based on bellmouthing face frequency selective surface |
| WO2014160322A1 (en) * | 2013-03-14 | 2014-10-02 | Impinj, Inc. | Powering rfid tags using multiple systhesized-beam rfid readers |
| CN103151579A (en) * | 2013-03-19 | 2013-06-12 | 中国科学院空间科学与应用研究中心 | Broadband sub-millimeter wave frequency selection surface based on fractal structure |
| CN103762425A (en) * | 2013-11-04 | 2014-04-30 | 航天恒星科技有限公司 | Double-frequency double-circular polarization common-caliber antenna array for two-dimensional phase control scanning |
| CN103762423A (en) * | 2014-01-24 | 2014-04-30 | 中国科学院光电技术研究所 | Reflection array antenna beam scanning antenna based on rotary phase shift surface technology |
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| CN106410419A (en) | 2017-02-15 |
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