CN102790280B - Isotropic metamaterial with high dielectric constant - Google Patents
Isotropic metamaterial with high dielectric constant Download PDFInfo
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- CN102790280B CN102790280B CN201110131817.9A CN201110131817A CN102790280B CN 102790280 B CN102790280 B CN 102790280B CN 201110131817 A CN201110131817 A CN 201110131817A CN 102790280 B CN102790280 B CN 102790280B
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Abstract
The invention relates to an isotropic metamaterial with a high dielectric constant. The isotropic metamaterial comprises a substrate and an artificial microstructure adhering to the substrate, the artificial microstructure comprises four branches with a common intersection point, one end of any branch is connected with the intersection point, the other end of any branch is a free end, each branch comprises at least one bending portion, any branch with the intersection point serving as a circle center sequentially and clockwise rotates for 90 degrees, 180 degrees and 270 degrees to coincide with other three branches respectively. According to the isotropic metamaterial with the high dielectric constant, the dielectric constant of the isotropic metamaterial with the artificial microstructure is substantially increased, the metamaterial can be applied to fields of antenna and semiconductor manufacture and the like, and besides, by means of the technical scheme, the defect that the dielectric constant is limited in unit volume in prior art is overcome so that the metamaterial has an immeasurable effect on the miniaturization of microwave devices.
Description
Technical field
The present invention relates to Meta Materials field, more particularly, relate to a kind of isotropic Meta Materials with high-k.
Background technology
Dielectric constant be material to electric field response parameter, material can produce charge inducing when extra electric field and weaken electric field, and in the extra electric field in former vacuum and final material, the ratio of electric field is dielectric constant.
Occurring in nature, any one material under given conditions, has its specific dielectric constant values or dielectric constant curve.The material that dielectric constant is higher is put in the electric field, and the intensity of electric field can have considerable decline in dielectric substance.The material that dielectric constant is high, as dielectric insulator, is commonly used to manufacture electric capacity.And in high dielectric constant material, electromagnetic wavelength is very short, the size of radio frequency and microwave device greatly can be reduced.
Along with the development that technology is maked rapid progress, people require more and more higher to the application of material, in some occasion, required dielectric constant values is far above the dielectric constant values of the existing material of nature, the dielectric insulator that existing dielectric constant is higher can not reach requirement, and this will cause bottleneck for technology and research and development of products.In fact, the material naturally existed all is difficult to realize this requirement, and therefore, people turn to made Meta Materials, to realizing above-mentioned technical purpose.
Meta Materials is a kind of artificial composite structure material with extraordinary physical property not available for natural material, by the ordered arrangement to micro-structural, changes relative dielectric constant and the magnetic permeability of in space often.Meta Materials can realize dielectric constant that common material cannot possess and magnetic permeability within the specific limits, thus can effectively control electromagnetic wave propagation characteristic.
Meta Materials comprises the base material accompanying by man-made microstructure and man-made microstructure be made up of the metal wire with certain pattern form.Multiple man-made microstructure array arrangement on base material, base material is played a supporting role to man-made microstructure, can be any material different from man-made microstructure.A generation effective dielectric constant and magnetic permeability are in space understood in the superposition of this bi-material, and these two physical parameters distinguish electric field response and the magnetic responsiveness of correspondence material monolithic.The feature of Meta Materials to electromagnetic response determined by the feature of man-made microstructure, and the electromagnetic response of man-made microstructure depends on the topological characteristic that the pattern of its metal wire has and metamaterial unit size to a great extent.Metamaterial unit size depends on the wave frequency that man-made microstructure needs respond, usual man-made microstructure is of a size of 1/10th of the electromagnetic wavelength of required response, otherwise the arrangement be made up of man-made microstructure in space can not be regarded as in space continuously.
Isotropic Meta Materials all can produce response to the electric field in any direction, physical performance index is in all directions all identical, usually " ten " shape man-made microstructure is as shown in Figure 1 adopted to go the dielectric constant distribution changed in space in current isotropic Meta Materials production technology, orthogonal metal wire plays a crucial role to change dielectric constant, can regard as according to the known Meta Materials of the characteristic of Meta Materials and be formed by the base material cell array arrangement of attachment man-made microstructure, the size of single base material unit be generally electromagnetic wavelength 1/10 to ten/5th between.Therefore in limited space in " ten " shape man-made microstructure mutual vertical metal line size change be limited in scope, therefore the changeable scope of dielectric constant is also limited.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect of prior art, provides a kind of isotropic Meta Materials with high-k.
The technical solution adopted for the present invention to solve the technical problems is: a kind of isotropic Meta Materials with high-k, comprise base material and attachment man-made microstructure on the substrate, described man-made microstructure 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 with described intersection point for the center of circle successively dextrorotation turn 90 degrees, overlaps with other three branch roads respectively after 180 degree and 270 degree.
In a preferred embodiment of the invention, described kink is bent to right angle.
In a preferred embodiment of the invention, described kink is bent to fillet.
In a preferred embodiment of the invention, described kink is bent to wedge angle.
In a preferred embodiment of the invention, the free end of described branch road is connected with a line segment.
In a preferred embodiment of the invention, the free end of described branch road is connected with the mid point of described line segment.
In a preferred embodiment of the invention, described man-made microstructure is attached on described base material by etching, plating, the modes such as quarters, photoetching, electronics quarter or ion quarter of boring.
In a preferred embodiment of the invention, described base material is ceramic material.
In a preferred embodiment of the invention, described base material is macromolecular material or polytetrafluoroethylene.
In a preferred embodiment of the invention, described base material is ferroelectric material, ferrite material or ferromagnetic material.
Implement the present invention and there is following beneficial effect: the present invention is by changing the structure of each branch in existing " ten " shape man-made microstructure, add the length of metal wire, through emulation, result shows, on a band frequency of non-constant width, the dielectric constant with isotropic Meta Materials of this man-made microstructure is very steady, and compared with having the Meta Materials of " ten " shape man-made microstructure, and dielectric constant and refractive index have and improve very significantly.Isotropic Meta Materials of this high-k can be applied in the fields such as antenna manufacture and semiconductor manufacturing, and this technical scheme is owing to breaching the defect that in prior art, in unit volume, dielectric constant is limited, the miniaturization of microwave device is produced and also can produce immeasurable effect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the schematic diagram of " ten " shape man-made microstructure in prior art;
Fig. 2 is the structural representation of the first man-made microstructure that the present invention proposes;
Fig. 3 is the structural representation of the Meta Materials comprising the first man-made microstructure;
Fig. 4 is the structural representation of the second man-made microstructure that the present invention proposes;
Fig. 5 is the structural representation of the Meta Materials comprising the second man-made microstructure;
Fig. 6 is the structural representation of the third man-made microstructure that the present invention proposes;
Fig. 7 is the structural representation of the Meta Materials comprising the third man-made microstructure;
Fig. 8 is the structural representation of the 4th kind of man-made microstructure that the present invention proposes;
Fig. 9 is the structural representation of the Meta Materials comprising the 4th kind of man-made microstructure;
Figure 10 is the structural representation of the 5th kind of man-made microstructure that the present invention proposes;
Figure 11 is the structural representation of the Meta Materials comprising the 5th kind of man-made microstructure;
Figure 12 is the structural representation of the 6th kind of man-made microstructure that the present invention proposes;
Figure 13 is the structural representation of the Meta Materials comprising the 6th kind of man-made microstructure.
Embodiment
The invention provides a kind of novel isotropic Meta Materials, relative to existing Meta Materials, improve the dielectric constant of Meta Materials by the topology changing wherein man-made microstructure.
As shown in Figure 3, Meta Materials comprises the substrate 1 of at least one piece of even uniform thickness, if there is polylith substrate 1, substrate 1 stacks gradually along the direction (z-axis direction) perpendicular to base plan, and by assembling or fill the material such as liquid raw substrate that can connect the two between every two pieces of substrates 1, existing two substrates 1 bonds by after hardening, thus makes polylith substrate 1 form an entirety.Substrate 1 can be made up of high dielectric constant ceramic materials such as FR-4, F4b, CEM1, CEM3 or TP-1.
Every block substrate 1 is divided into virtually multiple identical cube base material unit be mutually close to, these base material unit with x-axis direction be row, with y-axis direction vertical with it for leu time array arrangement.The length of side of base material unit be generally incident electromagnetic wave wavelength 1/10 to ten/5th between.Each base material unit is attached with a man-made microstructure 2, man-made microstructure 2 on base material unit and base material unit forms a metamaterial unit 3 jointly, as shown in Figure 3, Meta Materials of the present invention can be regarded as and formed along x, y, z three direction array arrangements by multiple metamaterial unit 3.
Man-made microstructure 2 be generally metal wire such as copper cash or silver-colored line form there is certain geometric plane or stereochemical structure, wherein, metal wire can be section is cylindric or the copper cash of flat, silver-colored line etc., and the section of metal wire also can be other shapes.As shown in Figure 2, in the present embodiment, man-made microstructure comprises four branch roads A, B, C and D of common intersection point O, one end of each branch road in these four branch roads is connected with intersection point O, the other end is free end, each branch road comprises multiple kink, and each kink is bent to right angle, arbitrary branch road with intersection point O for the center of circle overlaps with other three branch roads respectively according to clockwise direction 90-degree rotation, after 180 degree and 270 degree.
Man-made microstructure can also as shown in Figure 4, be with the difference of the man-made microstructure shown in Fig. 2: the free end of each branch road is connected to a line segment, and each free end is connected with the mid point of line segment respectively.Adopt the Meta Materials of the man-made microstructure shown in Fig. 4 as shown in Figure 5.
Man-made microstructure can also as shown in Figure 6, be with the difference of the man-made microstructure shown in Fig. 2: the kink of each branch road is bent to fillet.Adopt the Meta Materials of the man-made microstructure shown in Fig. 6 as shown in Figure 7.
Man-made microstructure can also as shown in Figure 8, be with the difference of the man-made microstructure shown in Fig. 6: the free end of each branch road is connected to a line segment, and each free end is connected with the mid point of line segment respectively.Adopt the Meta Materials of the man-made microstructure shown in Fig. 8 as shown in Figure 9.
Man-made microstructure can also as shown in Figure 10, be with the difference of the man-made microstructure shown in Fig. 2: the kink of each branch road is bent to wedge angle, adopts the Meta Materials of the man-made microstructure shown in Figure 10 as shown in figure 11.
Man-made microstructure can also as shown in figure 12, be with the difference of the man-made microstructure shown in Figure 10: the free end of each branch road is connected to a line segment, and each free end is connected with the mid point of line segment respectively.Adopt the Meta Materials of the man-made microstructure shown in Figure 12 as shown in figure 13.
Therefore; by reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect; also can make a lot of form; such as each branch road can be bent to other various rules or irregular shape, and base material also can be macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.These all belong within protection of the present invention.
Claims (5)
1. one kind has isotropic Meta Materials of high-k, it is characterized in that, comprise polylith base material and attachment man-made microstructure on the substrate, every block base material is divided into multiple identical cube base material unit be mutually close to virtually, this polylith substrate stacks gradually along the direction perpendicular to base plan, and by existing two substrates being bonded by the raw substrate of liquid curing of filling between every two pieces of substrates, thus make this polylith substrate form an entirety, the length of side of described base material unit be incident electromagnetic wave wavelength 1/10 to ten/5th between, each base material unit is attached with a man-made microstructure, described man-made microstructure 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, described kink is bent to fillet, arbitrary described branch road with described intersection point for the center of circle successively dextrorotation turn 90 degrees, overlap with other three branch roads respectively after 180 degree and 270 degree.
2. isotropic Meta Materials with high-k according to claim 1, is characterized in that, described man-made microstructure by etching, plating, bore quarters, photoetching, electronics carve or ion quarter be attached on described base material.
3. isotropic Meta Materials with high-k according to claim 2, is characterized in that, described base material is ceramic material.
4. isotropic Meta Materials with high-k according to claim 2, is characterized in that, described base material is macromolecular material or polytetrafluoroethylene.
5. isotropic Meta Materials with high-k according to claim 2, is characterized in that, described base material is ferroelectric material, ferrite material or ferromagnetic material.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110131817.9A CN102790280B (en) | 2011-05-20 | 2011-05-20 | Isotropic metamaterial with high dielectric constant |
| US13/577,553 US9899742B2 (en) | 2011-03-15 | 2011-10-27 | Artificial microstructure and artificial electromagnetic material using the same |
| EP11860704.3A EP2544307B1 (en) | 2011-03-15 | 2011-10-27 | Artificial microstructure and artificial electromagnetic material using same |
| PCT/CN2011/081367 WO2012122803A1 (en) | 2011-03-15 | 2011-10-27 | Artificial microstructure and artificial electromagnetic material using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110131817.9A CN102790280B (en) | 2011-05-20 | 2011-05-20 | Isotropic metamaterial with high dielectric constant |
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| Publication Number | Publication Date |
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| CN102790280A CN102790280A (en) | 2012-11-21 |
| CN102790280B true CN102790280B (en) | 2015-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5223849A (en) * | 1986-11-25 | 1993-06-29 | Chomerics, Inc. | Broadband electromagnetic energy absorber |
| CN100499261C (en) * | 2005-05-19 | 2009-06-10 | 上海联能科技有限公司 | Application method of high dielectric microwave composite material on antenna made |
| KR100723531B1 (en) * | 2006-06-13 | 2007-05-30 | 삼성전자주식회사 | Substrates for semiconductor package |
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Non-Patent Citations (2)
| Title |
|---|
| .The Design Synthesis of Multiband Artificial Magnetic Conductors Using High Impedance Frequency Selective Surfaces.《Antennas and Propagation》.2005,第53卷(第1期),第I节B.High Impedance Ground Plane第1段,第IV节A. Multiband Results for Arbitrary Frequency Bands,图6. * |
| Douglas J. Kern,Douglas H. Werner,Agostino Monorchio等 * |
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