CN104409847A - Novel large-angle wave transmission antenna cover - Google Patents
Novel large-angle wave transmission antenna cover Download PDFInfo
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- CN104409847A CN104409847A CN201410708295.8A CN201410708295A CN104409847A CN 104409847 A CN104409847 A CN 104409847A CN 201410708295 A CN201410708295 A CN 201410708295A CN 104409847 A CN104409847 A CN 104409847A
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Abstract
The invention discloses a novel large-angle wave transmission antenna cover which comprises a metamaterial, wherein the metamaterial comprises a first metamaterial sheet layer and a second metamaterial sheet layer; each metamaterial sheet layer comprises a substrate and a plurality of artificial microstructures which are arranged in arrays on the substrate and same in shape and size; the artificial microstructures of the first metamaterial sheet layer are rectangular metal patches; the artificial microstructures of the second metamaterial sheet layer are planar snowflake-shaped structures; each planar snowflake-shaped structure is provided with a first metal wire and a second metal wire which are perpendicularly bisected; two first metal branches with the same length are connected to the two ends of each first metal wire; the two ends of the first metal wire are connected to the center points of the two first metal branches; two second metal branches with the same lengths are connected to the two ends of each second metal wire; the two ends of the second metal wire are connected to the center points of the two second metal branches; the first metal branches and the second metal branches are the same in length. The antenna cover provided by the embodiment of the invention is improved in wave transmission performance and anti-jamming capability.
Description
Technical field
The present invention relates to electromagnetic technology field, particularly relate to a kind of novel wide-angle wave transparent radome.
Background technology
Meta Materials is a kind of novel artificial synthetic material, and the substrate be made up of nonmetallic materials and attachment are on the surface of the substrate or be embedded in that multiple man-made microstructure of substrate inside form.Substrate can be divided into multiple base board units of rectangular array arrangement virtually, each base board unit is attached with man-made microstructure, thus form a metamaterial unit, whole Meta Materials is made up of much such metamaterial unit, just as crystal is made up of according to certain arrangement countless lattices.Man-made microstructure in each metamaterial unit can be identical or incomplete same.What man-made microstructure was made up of wire has certain geometric plane or stereochemical structure, such as, form annular, I-shaped wire etc.
Due to the existence of man-made microstructure, each metamaterial unit has the electromagnetic property being different from substrate itself, and the Meta Materials that therefore all metamaterial unit are formed presents special response characteristic to Electric and magnetic fields; By designing different concrete structures and shape to man-made microstructure, the response characteristic of whole Meta Materials can be changed.
Generally, antenna system all can be provided with radome.The object of radome protects antenna system from the impact of wind and rain, ice and snow, sand and dust and solar radiation etc., makes antenna system service behaviour more stable, reliable.Alleviate the wearing and tearing of antenna system, corrosion and aging simultaneously, increase the service life.But radome is the barrier before antenna, can produces aerial radiation ripple and absorb and reflection, change the free space Energy distribution of antenna, and affect the electric property of antenna to a certain extent.
Prepare material many employings dielectric constant of radome and loss angle tangent is low, mechanical strength is high material at present, as fiberglass, epoxy resin, high molecular polymer etc., the dielectric constant of material has unadjustable property.Structure mostly is uniform single walled structure, sandwich and spatial skeleton structure etc., the design of cone wall thickness need take into account operation wavelength, radome size and dimension, environmental condition, material therefor in factors such as electric and structural performances, more difficultly reach high wave transparent requirement, even if also do not possess wide-angle wave transparent function under the condition ensureing high-transmission rate.And the working frequency range of radome is narrower, needs to change radome under different frequency range demands, reusing of resource cannot be realized, cause the waste of resource and the raising of equipment cost.
Summary of the invention
The embodiment of the present invention provides a kind of novel wide-angle wave transparent radome, adopts the Meta Materials of the multiple specific man-made microstructure with cyclic array arrangement, and the wave penetrate capability of radome strengthens, and antijamming capability increases.
The embodiment of the present invention provides a kind of novel wide-angle wave transparent radome, it is characterized in that, comprising: Meta Materials;
Described Meta Materials comprises the first metamaterial sheet and the second metamaterial sheet, and each metamaterial sheet comprises the substrate man-made microstructure identical with array arrangement multiple shape and size on the substrate;
The man-made microstructure of described first metamaterial sheet is metal rectangular paster;
The man-made microstructure of described second metamaterial sheet is plane flakes structure, described plane flakes structure has the first metal wire and the second metal wire mutually vertically divided equally, described first metal wire two ends are connected with two the first metal branch of equal length, described first metal wire two ends are connected on the mid point of two the first metal branch, described second metal wire two ends are connected with two the second metal branch of equal length, described second metal wire two ends are connected on the mid point of two the second metal branch, described first metal branch is equal with the length of the second metal branch.
Further, the longest edge of described metal rectangular paster is 1.4mm.
Further, described substrate is FR-4 organic polymer substrate or ceramic substrate.
Further, the thickness of described substrate is 0.10-0.30mm.
The one that the embodiment of the present invention provides novel wide-angle wave transparent radome, by adopting the Meta Materials of the multiple specific man-made microstructure with cyclic array arrangement, obtain the electromagnetic response needed, the wave penetrate capability based on the radome of Meta Materials is strengthened, antijamming capability increases.Can by regulating shape, the size of man-made microstructure, change the relative dielectric constant of material, refractive index and impedance, thus realize the impedance matching with air, to increase the transmission of incident electromagnetic wave to greatest extent, decrease the restriction to material thickness and dielectric constant when traditional antenna cover designs.Wide-angle wave transparent radome of the present invention is operated in 19-22G GHz frequency band, and wave transmission efficiency in this frequency band is very high.Under the condition of incidence of big angle, loss is relatively stable, can keep higher wave transmission rate.
Accompanying drawing explanation
Fig. 1 is the structure side view of the Meta Materials of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 2 is the structural representation of the first metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 3 is the man-made microstructure schematic diagram of the first metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 4 is the structural representation of the second metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 5 is the man-made microstructure schematic diagram of the second metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 6 is the breadboardin simulation result schematic diagram of the Meta Materials of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Fig. 7 is the Meta Materials of embodiment and the impedance matching schematic diagram of air of novel wide-angle wave transparent radome provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1-5, the structure of the embodiment of novel wide-angle wave transparent radome provided by the invention is described in detail.
See Fig. 1, it is the structure side view of the Meta Materials of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Described Meta Materials comprises the first metamaterial sheet 1 and the second metamaterial sheet 2, first metamaterial sheet 1 and the second metamaterial sheet 2 and overlaps stacked together.
In the middle of concrete enforcement, by filling liquid raw substrate or interconnected by assembling between two metamaterial sheet.
The shape of the Meta Materials that the embodiment of the present invention provides is tabular, also the shape of designing antenna cover Meta Materials used can be carried out according to the actual requirements when actual design, the shape etc. that such as can be designed to spherical shape or mate with antenna pattern, does not get rid of the shape using multiple plate-like structure to be spliced into needs yet.
See Fig. 2, it is the structural representation of the first metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
First metamaterial sheet 1 comprises substrate 11 man-made microstructure 12 identical with multiple shape and size of cyclic array arrangement on the substrate;
The arrangement of described cyclic array, namely with x direction be row, with perpendicular to the y direction in x direction be row arrange, and each line space, each column pitch are equal respectively, and line space equals column pitch.
Preferably, line space, column pitch are not more than 1/4th of the wavelength of the incident electromagnetic wave that will respond, the i.e. electromagnetic wave of such as operational environment to be wavelength be λ, need Meta Materials to be present negative magnetoconductivity to this electromagnetic electromagnetic property, then when designing man-made microstructure, above-mentioned line space, column pitch are selected to be not more than quarter-wave.
In the middle of concrete enforcement, substrate 11 is FR-4 organic polymer substrate or ceramic substrate, and the thickness of substrate 11 is 0.10-0.30mm.
In the middle of concrete enforcement, man-made microstructure is led to overetched mode and is attached on substrate, and the modes such as certain man-made microstructure also can adopt plating, bores quarter, photoetching, electronics quarter or ion quarter are attached to substrate.
See Fig. 3, it is the man-made microstructure schematic diagram of the first metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
The man-made microstructure 12 of the first metamaterial sheet 1 is metal rectangular paster;
Preferably, the longest edge a of described metal rectangular paster is 1.4mm.
In the middle of concrete enforcement, described metal rectangular paster material can be copper, silver or golden.
See Fig. 4, it is the structural representation of the second metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
Second metamaterial sheet 2 comprises substrate 21 man-made microstructure 22 identical with multiple shape and size of cyclic array arrangement on the substrate;
The arrangement of described cyclic array, namely with x direction be row, with perpendicular to the y direction in x direction be row arrange, and each line space, each column pitch are equal respectively, and line space equals column pitch.
Preferably, line space, column pitch are not more than 1/4th of the wavelength of the incident electromagnetic wave that will respond, the i.e. electromagnetic wave of such as operational environment to be wavelength be λ, need Meta Materials to be present negative magnetoconductivity to this electromagnetic electromagnetic property, then when designing man-made microstructure, above-mentioned line space, column pitch are selected to be not more than quarter-wave.
In the middle of concrete enforcement, substrate 21 is FR-4 organic polymer substrate or ceramic substrate, and the thickness of substrate 21 is 0.10-0.30mm.
See Fig. 5, it is the man-made microstructure schematic diagram of the second metamaterial sheet of the embodiment of novel wide-angle wave transparent radome provided by the invention;
The man-made microstructure 22 of the second metamaterial sheet 2 is plane flakes structure, described plane flakes structure has the first metal wire and the second metal wire mutually vertically divided equally, described first metal wire two ends are connected with two the first metal branch of equal length, described first metal wire two ends are connected on the mid point of two the first metal branch, described second metal wire two ends are connected with two the second metal branch of equal length, described second metal wire two ends are connected on the mid point of two the second metal branch, described first metal branch is equal with the length of the second metal branch.
In the middle of concrete enforcement, described metal wire material can be copper cash, silver-colored line or gold thread.
See Fig. 6, it is the breadboardin simulation result schematic diagram of the Meta Materials of the embodiment of novel wide-angle wave transparent radome provided by the invention;
With circuit simulation softwares, the radome that the Meta Materials that the embodiment of the present invention provides makes is emulated.
Substrate selects relative dielectric constant to be 4.3, and loss angle tangent is the material of 0.025, and wide-angle wave transparent Meta Materials is two-layer metamaterial sheet altogether.Known, the wave penetrate capability of the radome that the Meta Materials that the embodiment of the present invention provides makes in wider frequency band is all fine, and such as, within the scope of 15 ~ 25GHz, particularly 19 ~ 22GHz, the linear value of S21 parameter is close to 1.
See Fig. 7, be the Meta Materials of embodiment and the impedance matching schematic diagram of air of novel wide-angle wave transparent radome provided by the invention.
By three-dimensional full-wave electromagnetic field simulation software, the radome that the Meta Materials that the embodiment of the present invention provides makes is emulated.
Impedance in 12-18GHz frequency range is mated splendid with air, η on average equals 1.Can find out, when 19-22GHz, the real part re (η) of impedance η is close to 1, and its imaginary part im (η) is close to 0, and when frequency is 21.99GHz, the real part re (η) of impedance η is 0.9271, mates very well with air.
The one that the embodiment of the present invention provides novel wide-angle wave transparent radome, by adopting the Meta Materials of the multiple specific man-made microstructure with cyclic array arrangement, obtain the electromagnetic response needed, the wave penetrate capability based on the radome of Meta Materials is strengthened, antijamming capability increases.Can by regulating shape, the size of man-made microstructure, change the relative dielectric constant of material, refractive index and impedance, thus realize the impedance matching with air, to increase the transmission of incident electromagnetic wave to greatest extent, decrease the restriction to material thickness and dielectric constant when traditional antenna cover designs.Wide-angle wave transparent radome of the present invention is operated in 19-22G GHz frequency band, and wave transmission efficiency in this frequency band is very high.Under the condition of incidence of big angle, loss is relatively stable, can keep higher wave transmission rate.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (4)
1. a novel wide-angle wave transparent radome, is characterized in that, comprising: Meta Materials;
Described Meta Materials comprises the first metamaterial sheet and the second metamaterial sheet, and each metamaterial sheet comprises the substrate man-made microstructure identical with multiple shape and size of array arrangement on the substrate;
The man-made microstructure of described first metamaterial sheet is metal rectangular paster;
The man-made microstructure of described second metamaterial sheet is plane flakes structure, described plane flakes structure has the first metal wire and the second metal wire mutually vertically divided equally, described first metal wire two ends are connected with two the first metal branch of equal length, described first metal wire two ends are connected on the mid point of two the first metal branch, described second metal wire two ends are connected with two the second metal branch of equal length, described second metal wire two ends are connected on the mid point of two the second metal branch, described first metal branch is equal with the length of the second metal branch.
2. novel wide-angle wave transparent radome as claimed in claim 1, is characterized in that: the longest edge of described metal rectangular paster is 1.4mm.
3. novel wide-angle wave transparent radome as claimed in claim 1, is characterized in that: described substrate is FR-4 organic polymer substrate or ceramic substrate.
4. novel wide-angle wave transparent radome as claimed in claim 1, is characterized in that: the thickness of described substrate is 0.10-0.30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708295.8A CN104409847A (en) | 2014-11-27 | 2014-11-27 | Novel large-angle wave transmission antenna cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708295.8A CN104409847A (en) | 2014-11-27 | 2014-11-27 | Novel large-angle wave transmission antenna cover |
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| CN104409847A true CN104409847A (en) | 2015-03-11 |
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| CN201410708295.8A Pending CN104409847A (en) | 2014-11-27 | 2014-11-27 | Novel large-angle wave transmission antenna cover |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080129626A1 (en) * | 2006-12-01 | 2008-06-05 | Industrial Technology Research Institute | Antenna structure with antenna radome and method for rising gain thereof |
| CN102760947A (en) * | 2012-06-29 | 2012-10-31 | 深圳光启创新技术有限公司 | K-band ultra-wideband wave-transmitting radome |
| CN103367909A (en) * | 2012-04-01 | 2013-10-23 | 深圳光启创新技术有限公司 | Microwave antenna housing and microwave antenna system |
-
2014
- 2014-11-27 CN CN201410708295.8A patent/CN104409847A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080129626A1 (en) * | 2006-12-01 | 2008-06-05 | Industrial Technology Research Institute | Antenna structure with antenna radome and method for rising gain thereof |
| CN103367909A (en) * | 2012-04-01 | 2013-10-23 | 深圳光启创新技术有限公司 | Microwave antenna housing and microwave antenna system |
| CN102760947A (en) * | 2012-06-29 | 2012-10-31 | 深圳光启创新技术有限公司 | K-band ultra-wideband wave-transmitting radome |
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Application publication date: 20150311 |
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