CN102479997A - Metamaterial for deflecting electromagnetic waves - Google Patents
Metamaterial for deflecting electromagnetic waves Download PDFInfo
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- CN102479997A CN102479997A CN2011100618392A CN201110061839A CN102479997A CN 102479997 A CN102479997 A CN 102479997A CN 2011100618392 A CN2011100618392 A CN 2011100618392A CN 201110061839 A CN201110061839 A CN 201110061839A CN 102479997 A CN102479997 A CN 102479997A
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Abstract
The invention discloses a metamaterial for deflecting electromagnetic waves, which comprises a dielectric substrate and a plurality of artificial micro structures, wherein the dielectric substrate is divided into a plurality of lattices, the artificial micro structures are arranged in the lattices, a zone exists in the metamaterial, and products of dielectric constants epsilon and magnetic conductivities mu of a plurality of units of the zone change linearly. The metamaterial for deflecting the electromagnetic waves has the advantages of small volume, simpleness, easy realization, low cost and wide application prospect.
Description
Technical field
The present invention relates to ultra field of materials, more particularly, relate to the electromagnetic ultra material of a kind of deviation.
Background technology
At present, ultra material (metamaterial) more and more causes people's attention as a kind of material design concept and research forward position, and so-called ultra material is meant artificial composite structure or composite material that some have the not available extraordinary physical property of natural material.Structurally ordered design through on the key physical yardstick of material can break through the restriction of some apparent natural law, thereby obtains to exceed the intrinsic common meta-materials function of nature.
Developing " the ultra material " that so far comprising: " LHM ", photonic crystal, " ultra magnetic material " etc., ultra material character are the intrinsic properties of major decision and constituent material not often, and is decided by artificial structure wherein.
Prior art is for realizing that electromagnetic deviation is to utilize the mode of mechanical adjustment to change electromagnetic direction, and the mode of this mechanical adjustment realizes the method underaction of electromagnetic wave deviation, is difficult to regulate easily.
Summary of the invention
The technical problem that the present invention will solve is; The defective such as dumb and cost height to the design of the electromagnetic deviation of the realization of prior art, provide a kind of volume little, simple, be easy to realize and cost is low that electromagnetic wave is carried out ultra material, the method and system of deviation.
The technical solution adopted for the present invention to solve the technical problems is: construct the electromagnetic ultra material of a kind of deviation; Comprise: medium substrate and some artificial micro-structurals; Said medium substrate is divided into some lattices; Said artificial micro-structural places said lattice, and there is a section at least in said ultra material, and the product of the some artificial micro-structural of said section and the effective dielectric constant ε of medium substrate and equivalent permeability μ is linear change.
In the electromagnetic ultra material of deviation of the present invention, said artificial micro-structural is periodically evenly distribution in described lattice.
In the electromagnetic ultra material of deviation of the present invention; Said effective dielectric constant ε and equivalent permeability μ are through under the situation about selecting at medium substrate; Pattern, design size and/or the arrangement of artificial micro-structural in the space through changing artificial micro-structural obtain numerical value through emulation, and described pattern is the derivative type of " worker " font or " worker " font.
In the electromagnetic ultra material of deviation of the present invention, said artificial micro-structural is attached to the metal wire on the medium substrate, and said metal wire is copper cash or silver-colored line.
In the electromagnetic ultra material of deviation of the present invention, said metal wire through etching, plating, brill quarter, photoetching, electronics is carved or particle is carved method attached on the medium substrate.
In the electromagnetic ultra material of deviation of the present invention, described medium substrate is made by ceramic material, epoxy resin or polytetrafluoroethylene.
The electromagnetic ultra material of the deviation of embodiment of the present invention has following beneficial effect:
1. volume is little, does not take too much space;
2. simple, be easy to realize, low cost, to electromagnetic wave deviation in addition, do not rely on the kind and the shape of electromagnetic wave deviation equipment through ultra material;
3. be with a wide range of applications; Ultra material passes through electromagnetic deviation, so but can make electromagnetic wave transfer another one direction deviation electromagnetic wave beam to, can be used for making high degree of orientation antenna, realize perfect lens, generate various unusual phenomenons from a direction.
Description of drawings
Fig. 1 is a kind of electromagnetic wave deviation of first embodiment of the invention metamaterial structure block diagram;
Fig. 2 is a kind of electromagnetic wave deviation of second embodiment of the invention metamaterial structure block diagram;
Fig. 3 is the linear change figure of cellular construction and refractive index;
The name that each label is corresponding among the figure is called:
10 medium substrates, 20 artificial micro-structurals.
Embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
The product of the DIELECTRIC CONSTANTS of electromagnetic refractive index material and magnetic permeability μ (representing with refractive index) has relation, and when a branch of electromagnetic wave was propagated into other a kind of medium by a kind of medium, electromagnetic wave can reflect, and, to the high position deviation of refraction.
Ultra material can be to electric field or magnetic field, and perhaps both respond simultaneously.The DIELECTRIC CONSTANTS of ultra material is depended in the response of electric field, and the magnetic permeability μ of ultra material is depended in the response in magnetic field.Through to the DIELECTRIC CONSTANTS of every unit in the ultra material space and the accurate control of magnetic permeability μ; We can realize through ultra material electromagnetic deviation; This unit can be the combining structure of medium substrate and artificial micro-structural, also can be a unit of medium substrate itself.
See also Fig. 1 and Fig. 3, in instance one of the present invention, the electromagnetic ultra material of a kind of deviation; Comprise: medium substrate 10 and some artificial micro-structurals 20; Medium substrate 10 is along laterally vertically being divided into some lattices, and said artificial micro-structural 20 places lattice, when electromagnetic wave from first medium during through described ultra material; The some artificial micro-structural 20 that electromagnetic wave passes through is linear change with the effective dielectric constant ε of medium substrate 10 and the product of equivalent permeability μ; Changing Pattern is as shown in Figure 3, and based on this, the electromagnetic wave through ultra material is to same direction deviation.
See also Fig. 2 and Fig. 3, in the embodiment of the invention two, the electromagnetic ultra material of a kind of deviation; Comprise: medium substrate 10 and some artificial micro-structurals 20; Structure is identical with the embodiment major part, and different is, when electromagnetic wave from first medium during through described ultra material; The DIELECTRIC CONSTANTS of the medium substrate that electromagnetic wave passes through itself and the product of magnetic permeability μ and some artificial micro-structurals 20 are linear change with the effective dielectric constant ε of medium substrate 10 and the product of equivalent permeability μ; As shown in Figure 3, based on this, the electromagnetic wave through ultra material is to same direction deviation.Simultaneously, the artificial micro-structural on the medium substrate 10 can continuously also can be discontinuous, as long as arranging of artificial micro-structural wherein can be realized the linear change of refractive index.
Artificial micro-structural 20 is periodicity and evenly is distributed as preferable selection in described lattice, artificial micro-structural 20 is attached to the metal wire on the medium substrate 10, and its size can not surpass the lattice of medium substrate 10, and said metal wire is copper cash or silver-colored line.Metal wire through etching, plating, brill quarter, photoetching, electronics is carved or particle is carved method attached on the medium substrate 10.Medium substrate 10 is made by ceramic material, epoxy resin or polytetrafluoroethylene.
Lattice length and width are no more than 1/10 of electromagnetic wavelength, and the pattern of artificial micro-structural 20 can be the derivative type of " worker " font or " worker " font, promptly can be " ten thousand " font, " king " font etc.
The concrete method of linear change that realizes is:
The first step; Through Computer Simulation and experiment test; Cellular construction (comprising artificial micro-structural and medium substrate) electromagnetic property within the specific limits to some various geometric is measured; The electromagnetic response curve that measures of storage is confirmed the dielectric constant and the magnetic permeability of various cellular construction and is present in the database;
In second step, deflection refractive index is as required confirmed corresponding dielectric constant and magnetic permeability, and require: the product of dielectric constant and magnetic permeability all is a function along with change in location, is linear;
In the 3rd step, from database, select the cellular construction of ultra material respective point according to above-mentioned dielectric constant and magnetic permeability.
In embodiment one, two, because refractive index is a linear change, so after electromagnetic wave passed through ultra material, deflection angle was identical, sees from macroscopic view, deflection has taken place in electromagnetic wave.
The present invention utilizes the orderly arrangement of artificial micro-structural, is linear change through the product to some unit DIELECTRIC CONSTANTS on the metamaterial structure and magnetic permeability μ, realizes the linearity of the refraction index profile of material, thereby reaches the effect of electromagnetic wave deviation.
The electromagnetic ultra material of the deviation of embodiment of the present invention has following beneficial effect:
1. volume is little, does not take too much space;
2. simple, be easy to realize, low cost, to electromagnetic wave deviation in addition, do not rely on the kind and the shape of electromagnetic wave deviation equipment through ultra material;
3. be with a wide range of applications; Ultra material passes through electromagnetic deviation, so but can make electromagnetic wave transfer another one direction deviation electromagnetic wave beam to, can be used for making high degree of orientation antenna, realize perfect lens, generate various unusual phenomenons from a direction.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (6)
1. electromagnetic ultra material of deviation; It is characterized in that; Comprise: medium substrate and some artificial micro-structurals, said medium substrate is divided into some lattices, and said artificial micro-structural places said lattice; There is a section at least in said ultra material, and the DIELECTRIC CONSTANTS of the some unit of said section and the product of magnetic permeability μ are linear change.
2. the electromagnetic ultra material of deviation as claimed in claim 1 is characterized in that, said artificial micro-structural is periodically evenly distribution in described lattice.
3. the electromagnetic ultra material of deviation as claimed in claim 1; It is characterized in that; Said effective dielectric constant ε and equivalent permeability μ are through under the situation about selecting at medium substrate; Pattern, design size and/or the arrangement of artificial micro-structural in the space through changing artificial micro-structural obtain numerical value through emulation, and described pattern is the derivative type of " worker " font or " worker " font.
4. like the electromagnetic ultra material of the described deviation of the arbitrary claim of claim 1 to 3, it is characterized in that said artificial micro-structural is attached to the metal wire on the medium substrate, said metal wire is copper cash or silver-colored line.
5. the electromagnetic ultra material of deviation as claimed in claim 4 is characterized in that, said metal wire through etching, plating, brill quarter, photoetching, electronics is carved or particle is carved method attached on the medium substrate.
6. the electromagnetic ultra material of deviation as claimed in claim 1 is characterized in that described medium substrate is made by ceramic material, epoxy resin or polytetrafluoroethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100618392A CN102479997A (en) | 2011-03-15 | 2011-03-15 | Metamaterial for deflecting electromagnetic waves |
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| CN2011100618392A CN102479997A (en) | 2011-03-15 | 2011-03-15 | Metamaterial for deflecting electromagnetic waves |
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| CN102479997A true CN102479997A (en) | 2012-05-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594791A (en) * | 2013-11-08 | 2014-02-19 | 深圳光启创新技术有限公司 | Metamaterial plate, reflector antenna system and electromagnetic wave reflection regulating method |
| CN103675956A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Transparent metamaterial and preparation method thereof |
| CN104916918A (en) * | 2015-04-28 | 2015-09-16 | 电子科技大学 | High-gain horn antenna based on metamaterial loading |
| CN112542685A (en) * | 2020-12-18 | 2021-03-23 | 北京大学 | Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389998A (en) * | 2004-07-23 | 2009-03-18 | 加利福尼亚大学董事会 | Metamaterials |
| CN101793979A (en) * | 2010-02-10 | 2010-08-04 | 东南大学 | One-dimensional diffuse reflection random refractive index gradient coating and use thereof |
-
2011
- 2011-03-15 CN CN2011100618392A patent/CN102479997A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389998A (en) * | 2004-07-23 | 2009-03-18 | 加利福尼亚大学董事会 | Metamaterials |
| CN101793979A (en) * | 2010-02-10 | 2010-08-04 | 东南大学 | One-dimensional diffuse reflection random refractive index gradient coating and use thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675956A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Transparent metamaterial and preparation method thereof |
| CN103675956B (en) * | 2012-08-31 | 2016-08-17 | 深圳光启创新技术有限公司 | A kind of transparent metamaterial and preparation method thereof |
| CN103594791A (en) * | 2013-11-08 | 2014-02-19 | 深圳光启创新技术有限公司 | Metamaterial plate, reflector antenna system and electromagnetic wave reflection regulating method |
| CN104916918A (en) * | 2015-04-28 | 2015-09-16 | 电子科技大学 | High-gain horn antenna based on metamaterial loading |
| CN104916918B (en) * | 2015-04-28 | 2018-05-25 | 电子科技大学 | A kind of high-gain horn antenna based on Meta Materials loading |
| CN112542685A (en) * | 2020-12-18 | 2021-03-23 | 北京大学 | Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof |
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Application publication date: 20120530 |