CN103296434A - Artificial electromagnetic material and filter using same - Google Patents
Artificial electromagnetic material and filter using same Download PDFInfo
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- CN103296434A CN103296434A CN2012100503783A CN201210050378A CN103296434A CN 103296434 A CN103296434 A CN 103296434A CN 2012100503783 A CN2012100503783 A CN 2012100503783A CN 201210050378 A CN201210050378 A CN 201210050378A CN 103296434 A CN103296434 A CN 103296434A
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Abstract
The invention relates to an artificial electromagnetic material. The artificial electromagnetic material comprises at least one artificial electromagnetic material sheet layer. Each artificial electromagnetic material sheet layer comprises a substrate and metal microstructures attached to the substrate. Each artificial microstructure comprises a main solid metal sheet, wherein a plurality of small solid metal sheets are distributed around the main solid metal sheet in the same plane and the small solid metal sheets are not connected with the main solid metal sheet. The invention further provides a filter using the artificial electromagnetic material. The filter comprises a resonant cavity and a harmonic oscillator, wherein the harmonic oscillator is arranged in the resonant cavity and made of the artificial electromagnetic material. The dielectric constant of the artificial electromagnetic material with the metal microstructures is greatly improved, and the application of the artificial electromagnetic material to the filter is beneficial to miniaturization of the filter.
Description
[technical field]
The present invention relates to field of new, be specifically related to a kind of filter that has the artificial electromagnetic material of high-k and use this material.
[background technology]
Dielectric constant be material to a parameter of electric field response, material can produce charge inducing and weaken electric field when extra electric field, the ratio of electric field is dielectric constant in the extra electric field in the former vacuum and the final material.
Occurring in nature, any material have its specific dielectric constant values or dielectric constant curve under given conditions.The higher material of dielectric constant is placed in the electric field, and the intensity of electric field can have considerable decline in dielectric substance.In high dielectric constant material, electromagnetic wavelength is very short, can dwindle the size of radio frequency and microwave device greatly.
Along with technology development with rapid changepl. never-ending changes and improvements, people are more and more higher to the application requirements of material, in some occasion, needed dielectric constant values is far above the dielectric constant values of the existing material of nature, the higher dielectric insulator of existing dielectric constant can not reach requirement, and this will cause bottleneck for technology and research and development of products.Therefore, people turn to made artificial electromagnetic material.
Filter is one of common device in the radiotechnics, is widely used in the electronic equipments such as communication, radar, navigation, electronic countermeasures, satellite, test instrumentation.Filter has resonant cavity, and the volume of filter depends primarily on number and the volume of resonant cavity.And the resonance frequency of microwave cavity depends on the volume in this chamber, in general, the more big resonance frequency of resonant cavity volume is more low, therefore the more little resonance frequency of resonant cavity volume is more high, how to be implemented in the resonance frequency that reduces resonant cavity under the situation that does not increase resonant cavity size and to have great importance for the miniaturization of filter.
Have the harmonic oscillator of high-k by in resonant cavity, arranging, can under the condition of the volume that does not change resonant cavity, effectively reduce the resonance frequency of resonant cavity, be conducive to the miniaturization of filter.
[summary of the invention]
Technical problem to be solved by this invention is: at the defective of prior art, provide a kind of high-k artificial electromagnetic material that has.
The technical solution adopted for the present invention to solve the technical problems is: a kind of artificial electromagnetic material, comprise at least one sheet of material, described sheet of material comprises substrate and a plurality of artificial micro-structural that is attached on the substrate surface, described artificial micro-structural comprises a solid main sheet metal and centers on described solid main sheet metal and be distributed with a plurality of solid lamellules at grade that described solid lamellule does not link to each other with described solid main sheet metal.
Described solid main sheet metal is circular.
Be centered around described solid main sheet metal described solid lamellule on every side for evenly distributing.
Described solid main sheet metal is rectangle.
Described solid lamellule is arcwall face.
Described substrate is made by macromolecular material or ceramic material.
Described sheet of material has a plurality of, and arranges along the direction perpendicular to described substrate surface, is parallel to each other between the sheet of material and spaced set.
A kind of filter, comprise resonant cavity and the harmonic oscillator that is positioned at resonant cavity, described harmonic oscillator is artificial electromagnetic material, this artificial electromagnetic material comprises at least one artificial electromagnetic material lamella, each described artificial electromagnetic material lamella comprises substrate and the metal micro structure that is attached on the described substrate, described metal micro structure comprises a solid main sheet metal and centers on described solid main sheet metal and be distributed with a plurality of solid lamellules at grade that described solid lamellule does not link to each other with described solid main sheet metal.
Described solid main sheet metal is circle or rectangle.
Described substrate is made by macromolecular material or ceramic material.
Implement the present invention and have following beneficial effect: by adhere to the artificial micro-structural with geometry of the present invention at substrate, make artificial electromagnetic material have higher dielectric constant, this artificial electromagnetic material is applied in the miniaturization that is conducive to filter in the filter.
[description of drawings]
Fig. 1 is the structural representation of a kind of metal micro structure of mentioning in the embodiment of the invention;
Fig. 2 is the structural representation that comprises metal micro structure shown in Figure 1 and have the artificial electromagnetic material of an artificial electromagnetic material lamella;
Fig. 3 is the dielectric constant characteristic Simulation schematic diagram of artificial electromagnetic material shown in Figure 1;
Fig. 4 is the structural representation of second kind of metal micro structure mentioning in the embodiment of the invention;
Fig. 5 is the structural representation that comprises metal micro structure shown in Figure 4 and have the artificial electromagnetic material of an artificial electromagnetic material lamella;
Fig. 6 is the dielectric constant characteristic Simulation schematic diagram of artificial electromagnetic material shown in Figure 4;
Fig. 7 is the structural representation of the third metal micro structure of mentioning in the embodiment of the invention;
Fig. 8 is the structural representation that comprises metal micro structure shown in Figure 7 and have the artificial electromagnetic material of an artificial electromagnetic material lamella;
Fig. 9 is the dielectric constant characteristic Simulation schematic diagram of artificial electromagnetic material shown in Figure 7.
[embodiment]
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The present invention relates to a kind of artificial electromagnetic material, comprise at least one sheet of material, each sheet of material comprises substrate and a plurality of artificial micro-structural that is attached on the substrate surface, and substrate is made by macromolecular material or ceramic material, macromolecular material such as polytetrafluoroethylene, epoxy resin etc. commonly used.Artificial micro-structural is at substrate surface periodically arranges, and for example rectangular array is arranged, and namely be row with the directions X, serve as that row are arranged with the Y-direction perpendicular to directions X, and each line space, each column pitch equate respectively, even line space equals column pitch and all can.When sheet of material has when a plurality of, each sheet of material is arranged in order along the Z direction perpendicular to substrate surface, is arranged in parallel between the sheet of material.
Because artificial micro structure array arranges, therefore substrate can be divided into virtually a plurality of base board units of same array arrangement, the length of base board unit equals above line spacing, width and equals the thickness that column pitch, thickness equal substrate.On the surface of each base board unit just in time to an artificial micro-structural should be arranged.
As shown in Figure 2, metal micro structure comprises circular solid main sheet metal and centers on the solid main sheet metal of this circle and be evenly distributed with 32 solid lamellules at grade, and these 32 solid lamellules do not link to each other with solid main sheet metal, this solid lamellule is arcwall face, this arcwall face is inc annular, is the part of annular; As shown in Figure 1, each base board unit is of a size of 0.8mm * 3mm * 3mm, and wherein 0.8mm is the thickness of substrate; The diameter d 1 of circular solid main sheet metal is 1.5mm, and the interior ring diameter d2 of solid lamellule is 1.8mm, and outer shroud diameter d 3 is 2.9mm, and the spacing a of adjacent solid lamellule is 0.088mm;
The material of this metal micro structure is copper, it also can be other electric conducting material, what substrate adopted is that dielectric constant is 35 ceramic material, and metal micro structure is attached on the substrate by etching method, also can adopt platings, bore carve, methods such as electronics quarter or ion quarter.Be that the artificial electromagnetic material in the present embodiment is carried out the dielectric constant characteristic curve schematic diagram that emulation obtains as shown in Figure 3, as shown in Figure 3, the dielectric constant of this artificial electromagnetic material is about 58 in 0.2GHz～1.4GHz scope, with respect to pure ceramic material, the dielectric constant of this artificial electromagnetic material has improved about 1.65 times, and the electromagnetic consumable of this artificial electromagnetic material does not obviously increase simultaneously.
This metal micro structure also can be as shown in Figure 5, metal micro structure comprises circular solid main sheet metal and centers on the solid main sheet metal of this circle and be evenly distributed with 4 solid lamellules at grade, and these 4 solid lamellules do not link to each other with solid main sheet metal, this solid lamellule is arcwall face, this arcwall face is inc annular, is the part of annular; As shown in Figure 4, each base board unit is of a size of 0.8mm * 3mm * 3mm, and wherein 0.8mm is the thickness of substrate; The diameter d 1 of circular solid main sheet metal is 2mm, and the interior ring diameter d2 of solid lamellule is 2.5mm, and outer shroud diameter d 3 is 2.9mm, and the spacing a of adjacent solid lamellule is 0.8mm;
What substrate adopted is that dielectric constant is 35 ceramic material, be that the artificial electromagnetic material in the present embodiment is carried out the dielectric constant characteristic curve schematic diagram that emulation obtains as shown in Figure 6, as shown in Figure 6, the dielectric constant of this artificial electromagnetic material is about 55 in 0.1GHz～1.5GHz scope, with respect to pure ceramic material, the dielectric constant of this artificial electromagnetic material has improved about 1.57 times, and the electromagnetic consumable of this artificial electromagnetic material does not obviously increase simultaneously.
As shown in Figure 8, it is the third metal micro structure, this metal micro structure comprises circular solid main sheet metal and centers on the solid main sheet metal of this circle and be evenly distributed with 2 solid lamellules at grade, and these 2 solid lamellules do not link to each other with solid main sheet metal, this solid lamellule is arcwall face, this arcwall face is inc annular, is the part of annular; As shown in Figure 7, each base board unit is of a size of 0.8mm * 3mm * 3mm, and wherein 0.8mm is the thickness of substrate; The diameter d 1 of circular solid main sheet metal is 1.7mm, and the interior ring diameter d2 of solid lamellule is 1.5mm, and outer shroud diameter d 3 is 2.9mm, and the spacing a of adjacent solid lamellule is 0.4mm;
What substrate adopted is that dielectric constant is 35 ceramic material, be that the artificial electromagnetic material in the present embodiment is carried out the dielectric constant characteristic curve schematic diagram that emulation obtains as shown in Figure 9, as shown in Figure 9, the dielectric constant of this artificial electromagnetic material is about 103 in 0.1GHz～1.5GHz scope, with respect to pure ceramic material, the dielectric constant of this artificial electromagnetic material has improved about 2.94 times, and the electromagnetic consumable of this artificial electromagnetic material does not obviously increase simultaneously.
The present invention also provides a kind of filter that uses above-mentioned artificial electromagnetic material, and this filter comprises resonant cavity and be positioned at the harmonic oscillator of resonant cavity that harmonic oscillator wherein adopts the artificial electromagnetic material in the present embodiment.Because the artificial electromagnetic material in the present embodiment has higher dielectric constant, so adopt the harmonic oscillator of this artificial electromagnetic material to be conducive to the miniaturization of filter.
By the number of plies that changes substrate in the medium substrate, the modes such as shape and size of metal micro structure, can further adjust and improve the dielectric constant of medium substrate, make it satisfy special occasions to the demand of high-k.
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 only is schematic; rather than it is restrictive; those of ordinary skill in the art also can make a lot of distortion not breaking away under the scope situation that aim of the present invention and claim protect under enlightenment of the present invention.Can be other various geometries such as metal micro structure; solid main sheet metal is not limited to circle; also can be shapes such as rectangle; metal micro structure is not limited to be distributed on the face of substrate; metal micro structure can be attached on positive and negative two faces of substrate; also can be that these all belong within protection scope of the present invention between two substrates.
Claims (10)
1. artificial electromagnetic material, comprise at least one sheet of material, described sheet of material comprises substrate and a plurality of artificial micro-structural that is attached on the substrate surface, it is characterized in that, described artificial micro-structural comprises a solid main sheet metal and centers on described solid main sheet metal and be distributed with a plurality of solid lamellules at grade that described solid lamellule does not link to each other with described solid main sheet metal.
2. artificial electromagnetic material according to claim 1 is characterized in that, described solid main sheet metal is circular.
3. artificial electromagnetic material according to claim 2 is characterized in that, is centered around described solid main sheet metal described solid lamellule on every side for evenly distributing.
4. artificial electromagnetic material according to claim 1, it is characterized in that: described solid main sheet metal is rectangle.
5. artificial electromagnetic material according to claim 1 is characterized in that, described solid lamellule is arcwall face.
6. according to the described artificial electromagnetic material of claim 1-5, it is characterized in that described substrate is made by macromolecular material or ceramic material.
7. artificial electromagnetic material according to claim 1 is characterized in that, described sheet of material has a plurality of, and arranges along the direction perpendicular to described substrate surface, is parallel to each other between the sheet of material and spaced set.
8. filter, comprise resonant cavity and the harmonic oscillator that is positioned at resonant cavity, it is characterized in that, described harmonic oscillator is artificial electromagnetic material, this artificial electromagnetic material comprises at least one artificial electromagnetic material lamella, each described artificial electromagnetic material lamella comprises substrate and the metal micro structure that is attached on the described substrate, described metal micro structure comprises a solid main sheet metal and centers on described solid main sheet metal and be distributed with a plurality of solid lamellules at grade that described solid lamellule does not link to each other with described solid main sheet metal.
9. filter according to claim 8 is characterized in that, described solid main sheet metal is circle or rectangle.
10. filter according to claim 8 is characterized in that, described substrate is made by macromolecular material or ceramic material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050378.3A CN103296434B (en) | 2012-02-29 | 2012-02-29 | A kind of artificial electromagnetic material and the wave filter using the material |
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| CN201210050378.3A CN103296434B (en) | 2012-02-29 | 2012-02-29 | A kind of artificial electromagnetic material and the wave filter using the material |
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| CN103296434A true CN103296434A (en) | 2013-09-11 |
| CN103296434B CN103296434B (en) | 2017-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539430A (en) * | 2018-02-09 | 2018-09-14 | 曲阜师范大学 | Meta Materials with single-pass band and bilateral absorption band |
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- 2012-02-29 CN CN201210050378.3A patent/CN103296434B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| TIE JUN CUI等: ""Metamaterials Theory,Design,and Applications"", 《SPRINGER》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539430A (en) * | 2018-02-09 | 2018-09-14 | 曲阜师范大学 | Meta Materials with single-pass band and bilateral absorption band |
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Effective date of registration: 20170830 Address after: Luoyang District of Jianxi Dragon Yu Lu National University Science and Technology Park in Henan province Luoyang city 471000 building 2-2 Co-patentee after: Luoyang Sophisticated Equipment Technology Co., Ltd. Patentee after: Luoyang Institute of Jianduan Technology Address before: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |
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