CN103094697A - Artificial electromagnetic material - Google Patents
Artificial electromagnetic material Download PDFInfo
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- CN103094697A CN103094697A CN2011103365403A CN201110336540A CN103094697A CN 103094697 A CN103094697 A CN 103094697A CN 2011103365403 A CN2011103365403 A CN 2011103365403A CN 201110336540 A CN201110336540 A CN 201110336540A CN 103094697 A CN103094697 A CN 103094697A
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Abstract
The invention relates to an artificial electromagnetic material which comprises at least an artificial electromagnetic material slice layer. Each artificial electromagnetic material slice layer comprises two opposite substrates and at least an artificial microstructure which is attached between the two substrates. Each microstructure comprises a first artificial microstructure and a second artificial microstructure. The first artificial microstructure comprises four branches with the same point of intersection. One end of each branch is connected with the point of intersection, and the other end of the branch is a free end. The branch comprises at least a bent portion. After each branch rotates clockwise by 90 degrees, 180 degrees and 270 degrees in sequence by taking the point of intersection as a center of rotation, the branch coincides with the other three branches. The second artificial microstructure comprises I-shaped structures which are mutually orthorhombic. The point of intersection is midpoint of each I-shaped structure. At least two line segments which are symmetrically relative to the point of intersection are arranged in pairs in a connecting line of the I-shaped structures. The manual electromagnetic material possesses a high dielectric constant in a certain frequency range, possesses dielectric constant distribution which gradually increases from zero in another frequency range and is capable of meeting requirements of special occasions.
Description
Technical field
The present invention relates to a kind of new material, more particularly, relate to a kind of artificial electromagnetic material.
Background technology
Artificial electromagnetic material is commonly called as super material, is a kind of can to the novel artificial synthetic material of electromagnetic wave generation response, the be comprised of substrate and the artificial micro-structural that is attached on substrate.Therefore the structure with certain geometrical pattern because artificial micro-structural normally is arranged into by electric conducting material can produce response to electromagnetic wave, thereby make artificial electromagnetic material integral body embody the electromagnetic property that is different from substrate.
Dielectric constant be take insulating material as medium with make the ratio of the capacitance of unidimensional capacitor take vacuum as medium, it is illustrated in unit electric field, the size of the electrostatic energy of savings in unit volume.Dielectric constant characterizes dielectric polarization and stores the ability of electric charge.If there is the material of high-k to be placed in electric field, the intensity of electric field can have considerable decline in dielectric.In high dielectric constant material, electromagnetic wavelength is very short, can greatly dwindle the size of radio frequency and microwave device.The excursion of the most dielectric constants of existing material is all very little.
Existing artificial electromagnetic material adopts I-shaped artificial micro-structural usually, its dielectric constant distribution of artificial electromagnetic material with this structure only produces once to assist in the frequency band of paying close attention to usually shakes, Fig. 1 is the simulation result with its dielectric constant of artificial electromagnetic material of I-shaped artificial micro-structural, the change in dielectric constant scope that can find out it is smaller, and be all to change since a larger value usually, dielectric constant is usually greater than 10 in low-loss situation.In some application scenario, in large scale integrated circuit and antenna manufacturing, the dielectric constant that need to start from scratch and change, common material generally do not satisfy.
Summary of the invention
The technical problem to be solved in the present invention is, for the defects of prior art, provides a kind of artificial electromagnetic material, and this material has higher dielectric constant and have the dielectric constant distribution that is increased gradually by zero beginning in another frequency range in certain frequency range
the technical solution adopted for the present invention to solve the technical problems is: construct a kind of artificial electromagnetic material, comprise at least one artificial electromagnetic material lamella, each artificial electromagnetic material lamella comprises two relative substrates and is attached at least one artificial micro-structural between described two substrates, each artificial micro-structural comprises the first artificial micro-structural 1 and the second artificial micro-structural 2, the described first artificial micro-structural 1 comprises four branch roads of common intersection point, one end of arbitrary described branch road is connected with described intersection point, the other end is free end, described branch road comprises at least one kink, arbitrary described branch road take described intersection point as pivot successively dextrorotation turn 90 degrees, overlap with other three branch roads respectively after 180 degree and 270 degree, the described second artificial micro-structural 2 comprises mutually orthogonal I-shape construction, and intersection point is the mid point of I-shape construction, also is provided with in pairs at least two about handing over point-symmetric line segment on the connecting line of I-shape construction.
In the preferred embodiment of the present invention, the bending of the kink of described the first artificial micro-structural is the right angle.
In the preferred embodiment of the present invention, the bending of the kink of described the first artificial micro-structural is fillet.
In the preferred embodiment of the present invention, the bending of the kink of described the first artificial micro-structural is wedge angle.
In the preferred embodiment of the present invention, the free end of arbitrary branch road of described the first artificial micro-structural is connected with a line segment.
In the preferred embodiment of the present invention, the free end of arbitrary branch road of described the first artificial micro-structural is connected with the mid point of described line segment.
In the preferred embodiment of the present invention, described artificial micro-structural by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved and is attached on described substrate.
In the preferred embodiment of the present invention, described substrate is ceramic material.
In the preferred embodiment of the present invention, described substrate is macromolecular material or polytetrafluoroethylene.
In the preferred embodiment of the present invention, described substrate is ferroelectric material, ferrite material or ferromagnetic material.
Implement a kind of artificial electromagnetic material of the present invention, have following beneficial effect: this material has higher dielectric constant and have the dielectric constant distribution that is increased gradually by zero beginning in another frequency range in certain frequency range, can satisfy the application of specific occasion.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is that in prior art, artificial micro-structural is the dielectric constant characteristic curve emulation schematic diagram of the artificial electromagnetic material of I-shape construction;
Fig. 2 is the fractionation structural representation of an artificial electromagnetic material lamella shown in embodiment;
Fig. 3 is the structural representation of an artificial micro-structural in Fig. 2;
But Fig. 4 has the structural representation of the artificial micro-structural of identical shaped different size with Fig. 3;
Fig. 5 is the dielectric constant characteristic curve emulation schematic diagram of artificial electromagnetic material when artificial micro-structural is Fig. 3;
Fig. 6 is the dielectric constant characteristic curve emulation schematic diagram of artificial electromagnetic material when artificial micro-structural is Fig. 4;
Fig. 7 is the structural representation of the first artificial micro-structural in artificial micro-structural;
Fig. 8 is the structural representation of the second artificial micro-structural in artificial micro-structural;
Fig. 9 is the possible structural representation of the first artificial micro-structural.
Embodiment
Embodiment one
The present embodiment provides a kind of novel artificial electromagnetic material, comprise an artificial electromagnetic material lamella, the artificial electromagnetic material lamella that can certainly comprise two or more, when having a plurality of artificial electromagnetic material lamella, these artificial electromagnetic material lamellas are along perpendicular to its surperficial direction stack, and are assembled into one by mechanical connection, welding or the mode such as bonding.
As shown in Figure 2, each artificial electromagnetic material lamella comprises two relative substrates and is attached to a plurality of artificial micro-structural between described two substrates, and each artificial micro-structural comprises the first artificial micro-structural 1 and the second artificial micro-structural 2.The first artificial micro-structural 1 comprises four branch roads of common intersection point, one end of arbitrary described branch road is connected with described intersection point, the other end is free end, arbitrary branch road comprises a plurality of quarter bends folding parts, the free end of branch road is connected with a line segment, and free end is connected with the mid point of line segment, arbitrary described branch road take described intersection point as pivot successively dextrorotation turn 90 degrees, 180 the degree and 270 the degree after overlap with other three branch roads respectively; The second artificial micro-structural 2 comprises mutually orthogonal I-shape construction, and intersection point is the mid point of I-shape construction, also is provided with in pairs four about handing over point-symmetric line segment on the connecting line of each I-shape construction.
The artificial micro-structural of each artificial electromagnetic material lamella adopt live width be 0.1 millimeter thickness be 0.018 millimeter copper cash by etching, plating, brill quarter, photoetching, electronics is carved or ion quarter etc. mode be attached to the surface of a substrate, can certainly adopt other electric conducting materials; Adjacent substrate is assembled into one by mechanical connection, welding or the mode such as bonding.This substrate is divided into a plurality of identical column base board units that mutually are close to virtually, the design base board unit is of a size of 8 millimeters * 4 millimeters * 0.4 millimeter, in the first artificial micro-structural, size such as Fig. 7 of each several part are respectively: a=3.5 millimeter, b=1.6 millimeter, c=3.1 millimeter, d=2.5 millimeter, e=2.1 millimeter, f=1 millimeter, g=1.9 millimeter, and wherein in the line segment that marks of a, b, c, d, e and f, the line-spacing between adjacent segments is 0.1 millimeter; In the second artificial micro-structural, size such as Fig. 8 of each several part are respectively: A=3.5 millimeter, B=1.5 millimeter, C=1.3 millimeter, D=1.4 millimeter, line-spacing in three line segments of A, B and C mark between adjacent segments is 0.1 millimeter, the first artificial micro-structural 1 and the second artificial micro-structural 2 arranging as shown in Figure 3 on substrate.
Corresponding dielectric constant characteristic Simulation figure is as shown in Figure 5 when this artificial electromagnetic material for electromagnetic wave, by the solid line in Fig. 5 as can be known, (1GHz～3GHz) has higher dielectric constant to this material in certain frequency range, and its dielectric constant (5.5GHz～7.5GHz) be increased to gradually 121 by zero in certain frequency range, by dotted line corresponding in figure as can be known in above-mentioned frequency range the imaginary part of dielectric constant approach zero, therefore loss is lower, is applied in the fields such as large scale integrated circuit and antenna manufacturing so this material is suitable.
Embodiment two
With the difference of embodiment one be: the second artificial micro-structural 2 size decreases A=2.2 millimeter, B=0.8 millimeter, C=0.6 millimeter, D=1.4 millimeter, line-spacing between three line segment adjacent segments of A, B and C mark is 0.1 millimeter, the first artificial micro-structural 1 and the second artificial micro-structural 2 arranging as shown in Figure 4 on substrate.
Corresponding dielectric constant characteristic Simulation figure is as shown in Figure 6 when this artificial electromagnetic material for electromagnetic wave, by the solid line in Fig. 6 as can be known, (1GHz～3.2GHz) has higher dielectric constant to this material in certain frequency range, and its dielectric constant (5.7GHz～9.2GHz) be increased to gradually 118 by zero in certain frequency range, by dotted line corresponding in figure as can be known in above-mentioned frequency range the imaginary part of dielectric constant approach zero, so loss is also lower.
When needing to use dielectric constant start from scratch the characteristic that changes in other frequency range, can realize by the size of change base board unit or the size of the first artificial microstructure size or the second artificial micro-structural, reduce to move after the size resonance peak, size becomes large resonance peak reach.
the above is described embodiments of the invention by reference to the accompanying drawings, but the present invention is not limited to above-mentioned embodiment, above-mentioned embodiment is only schematic, rather than restrictive, those of ordinary skill in the art is under enlightenment of the present invention, do not breaking away from the scope situation that aim of the present invention and claim protect, also can make a lot of distortion, such as the shape of the first artificial micro-structural can be structure shown in Figure 9, the kink of each branch road is not limited to the right angle, can also be fillet or wedge angle, the free end of each branch road can connecting line segment also connecting line segment not, within these all belong to protection of the present invention.
Claims (10)
1. artificial electromagnetic material, comprise at least one artificial electromagnetic material lamella, each artificial electromagnetic material lamella comprises two relative substrates and is attached at least one artificial micro-structural between described two substrates, it is characterized in that, each artificial micro-structural comprises the first artificial micro-structural and the second artificial micro-structural, the described first artificial micro-structural comprises four branch roads of common intersection point, one end of arbitrary described branch road is connected with described intersection point, the other end is free end, described branch road comprises at least one kink, arbitrary described branch road take described intersection point as pivot successively dextrorotation turn 90 degrees, overlap with other three branch roads respectively after 180 degree and 270 degree, the described second artificial micro-structural comprises mutually orthogonal I-shape construction, and intersection point is the mid point of I-shape construction, also is provided with in pairs at least two about handing over point-symmetric line segment on the connecting line of I-shape construction.
2. artificial electromagnetic material according to claim 1, is characterized in that, the kink bending of described the first artificial micro-structural is the right angle.
3. artificial electromagnetic material according to claim 1, is characterized in that, the kink bending of described the first artificial micro-structural is fillet.
4. artificial electromagnetic material according to claim 1, is characterized in that, the kink bending of described the first artificial micro-structural is wedge angle.
According to claim 1 to 4 arbitrary described artificial electromagnetic material, it is characterized in that, the free end of arbitrary branch road of described the first artificial micro-structural is connected with a line segment.
6. artificial electromagnetic material according to claim 5, is characterized in that, the free end of arbitrary branch road of described the first artificial micro-structural is connected with the mid point of described line segment.
According to claim 1 to 4 arbitrary described artificial electromagnetic material, it is characterized in that, described artificial micro-structural by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved and is attached on described substrate.
8. artificial electromagnetic material according to claim 7, is characterized in that, described substrate is ceramic material.
9. artificial electromagnetic material according to claim 7, is characterized in that, described substrate is macromolecular material or polytetrafluoroethylene.
10. artificial electromagnetic material according to claim 7, is characterized in that, described substrate is ferroelectric material, ferrite material or ferromagnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110336540.3A CN103094697B (en) | 2011-10-31 | A kind of artificial electromagnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110336540.3A CN103094697B (en) | 2011-10-31 | A kind of artificial electromagnetic material |
Publications (2)
| Publication Number | Publication Date |
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| CN103094697A true CN103094697A (en) | 2013-05-08 |
| CN103094697B CN103094697B (en) | 2016-12-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796139Y (en) * | 2005-05-19 | 2006-07-12 | 上海联能科技有限公司 | High-order microwave composite functional material antenna of regular square single cell structure |
| CN1866612A (en) * | 2005-05-19 | 2006-11-22 | 上海联能科技有限公司 | Application method of high dielectric microwave composite material on antenna made |
| US7482994B2 (en) * | 2006-04-05 | 2009-01-27 | The Hong Kong University Of Science And Technology | Three-dimensional H-fractal bandgap materials and antennas |
| US20100141358A1 (en) * | 2005-01-18 | 2010-06-10 | University Of Massachusetts Lowell | Chiral Metamaterials |
| CN102204008A (en) * | 2008-08-22 | 2011-09-28 | 杜克大学 | Metamaterials for surfaces and waveguides |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100141358A1 (en) * | 2005-01-18 | 2010-06-10 | University Of Massachusetts Lowell | Chiral Metamaterials |
| CN2796139Y (en) * | 2005-05-19 | 2006-07-12 | 上海联能科技有限公司 | High-order microwave composite functional material antenna of regular square single cell structure |
| CN1866612A (en) * | 2005-05-19 | 2006-11-22 | 上海联能科技有限公司 | Application method of high dielectric microwave composite material on antenna made |
| US7482994B2 (en) * | 2006-04-05 | 2009-01-27 | The Hong Kong University Of Science And Technology | Three-dimensional H-fractal bandgap materials and antennas |
| CN102204008A (en) * | 2008-08-22 | 2011-09-28 | 杜克大学 | Metamaterials for surfaces and waveguides |
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