CN103296350A - Artificial electromagnetic material and filter using same - Google Patents
Artificial electromagnetic material and filter using same Download PDFInfo
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- CN103296350A CN103296350A CN2012100504269A CN201210050426A CN103296350A CN 103296350 A CN103296350 A CN 103296350A CN 2012100504269 A CN2012100504269 A CN 2012100504269A CN 201210050426 A CN201210050426 A CN 201210050426A CN 103296350 A CN103296350 A CN 103296350A
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- artificial electromagnetic
- electromagnetic material
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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 at least one metal sheet attached to the substrate. The artificial electromagnetic material is characterized in that each metal sheet is provided with a circular ring in a hollowed-out mode. 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 sheets 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, more particularly, relate 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
The technical problem to be solved in the present invention is, at the defective of prior art, provides a kind of high-k artificial electromagnetic material that has.
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 described artificial electromagnetic material lamella comprises substrate and at least one sheet metal that is attached on the described substrate, and hollow out has annulus on each described sheet metal.
In preferred implementation of the present invention, described sheet metal has a plurality of, and on described substrate surface array arrangement.
In preferred implementation of the present invention, hollow out has an annulus on each described sheet metal.
In preferred implementation of the present invention, described sheet metal is square, and the center of circle of described annulus is described foursquare center.
In preferred implementation of the present invention, on each described sheet metal a plurality of annulus are arranged, and described a plurality of annulus is and periodically arranges.
In preferred implementation of the present invention, described substrate is ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material or ferromagnetic material.
The present invention also provides a kind of filter, comprise resonant cavity and the harmonic oscillator that is positioned at intra 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 at least one sheet metal that is attached on the described substrate, and hollow out has annulus on each described sheet metal.
In preferred implementation of the present invention, described sheet metal has a plurality of, and on described substrate surface array arrangement.
In preferred implementation of the present invention, hollow out has an annulus on each described sheet metal.
In preferred implementation of the present invention, described sheet metal is square, and the center of circle of described annulus is described foursquare center.
In preferred implementation of the present invention, described substrate is ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material or ferromagnetic material.
Implement the present invention and have following beneficial effect: the engraved structure that array arrangement is set by the substrate at artificial electromagnetic material, can 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
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the artificial electromagnetic material of the embodiment of the invention;
Fig. 2 is the size marking schematic diagram of the material cell of artificial electromagnetic material shown in Figure 1;
Fig. 3 is the dielectric constant analogous diagram of artificial electromagnetic material shown in Figure 1;
Fig. 4 is the Filter Structures cutaway view with artificial electromagnetic material shown in Figure 1.
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.
Present embodiment provides a kind of artificial electromagnetic material as shown in Figure 1, comprise at least one artificial electromagnetic material lamella, adjacent artificial electromagnetic material lamella is along can be by mechanical connection, welding perpendicular to the direction of its upper and lower surface or fill the material that can connect the two between adjacent artificial electromagnetic material lamella both modes such as bonding are assembled into one.
As shown in Figure 1, the artificial electromagnetic material lamella comprises substrate 1 and a plurality of sheet metals 2 that are attached to substrate 1 upper surface in the present embodiment, each artificial electromagnetic material lamella is divided into the material cell 3 of a plurality of array arrangements virtually, as shown in Figure 2, the middle on each material cell 3 surface is attached with a sheet metal 2, and hollow out has an annulus on each sheet metal 2.In the present embodiment, the size A of everyone material cell 3 * A is 3mm * 3mm, and thickness is 0.8mm, square-shaped metal sheet attached thereto is of a size of 2.8mm * 2.8mm, the external diameter of the annulus of hollow out is 1mm on the sheet metal, internal diameter 0.5mm, and the center of circle of annulus and foursquare central point concurrent.
The material of sheet metal 2 is copper, can certainly be other electric conducting materials; Substrate 1 employing dielectric constant is 40 ceramic material, can certainly adopt materials such as FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material or ferromagnetic material.Sheet metal 2 and engraved structure thereof realize by etching mode, also can adopt plating, bore quarter, photoetching, electronics is carved or ion quarter etc. mode realize.The analogous diagram of artificial electromagnetic material shown in Figure 1 as shown in Figure 3, the dielectric constant of this artificial electromagnetic material in 0～1.5G scope is about 205 as shown in Figure 3, with respect to pure ceramic material, the dielectric constant of this artificial electromagnetic material has amplified more than 5 times, and the electromagnetic consumable of this artificial electromagnetic material does not obviously increase with respect to ceramic substrate simultaneously.
Certainly, the annulus of hollow out can have a plurality ofly on each sheet metal 3, and for example four annulus are the middle that quadrate array is arranged and is positioned at sheet metal 3 at a sheet metal 3; Also can have eight, and eight annulus are that the center of circle circularizes five equilibrium and arranges with the center of square-shaped metal sheet 3.Further, sheet metal 3 must not be square, can be symmetrical structures such as rectangle, circle, regular hexagon yet.
The present invention also provides a kind of filter that uses above-mentioned artificial electromagnetic material, and this filter comprises resonant cavity 4 and be positioned at the harmonic oscillator of resonant cavity 4 that harmonic oscillator wherein adopts the artificial electromagnetic material in the present embodiment.As shown in Figure 4, comprise the port 5 that connects input and output signal, each port 5 intercouples by the metal dish 6 that is electrically connected with it respectively, and harmonic oscillator is passed through stent support 7 in resonant cavity, finely tune for the resonance frequency to filter, this filter also can arrange tuning screw rod.Because the artificial electromagnetic material in the present embodiment has higher dielectric constant, so adopt this artificial electromagnetic material to be conducive to the miniaturization of filter as the filter of harmonic oscillator.
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 is under enlightenment of the present invention; also can make a lot of distortion not breaking away under the scope situation that aim of the present invention and claim protect, these distortion all belong within the protection of the present invention.
Claims (10)
1. an artificial electromagnetic material comprises at least one artificial electromagnetic material lamella, and each described artificial electromagnetic material lamella comprises substrate and at least one sheet metal that is attached on the described substrate, it is characterized in that hollow out has annulus on each described sheet metal.
2. artificial electromagnetic material according to claim 1 is characterized in that, described sheet metal has a plurality of, and on described substrate surface array arrangement.
3. artificial electromagnetic material according to claim 1 is characterized in that, hollow out has an annulus on each described sheet metal.
4. artificial electromagnetic material according to claim 3 is characterized in that, described sheet metal is square, and the center of circle of described annulus is described foursquare center.
5. artificial electromagnetic material according to claim 3 is characterized in that, on each described sheet metal a plurality of annulus is arranged, and described a plurality of annulus is and periodically arranges.
6. according to the arbitrary described artificial electromagnetic material of claim 1 to 5, it is characterized in that described substrate is ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material or ferromagnetic material.
7. filter, comprise resonant cavity and the harmonic oscillator that is positioned at intra 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 at least one sheet metal that is attached on the described substrate, and hollow out has annulus on each described sheet metal.
8. filter according to claim 7 is characterized in that, described sheet metal has a plurality of, and on described substrate surface array arrangement.
9. filter according to claim 7 is characterized in that, hollow out has an annulus on each described sheet metal.
10. filter according to claim 9 is characterized in that, described sheet metal is square, and the center of circle of described annulus is described foursquare center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100504269A CN103296350A (en) | 2012-02-29 | 2012-02-29 | Artificial electromagnetic material and filter using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100504269A CN103296350A (en) | 2012-02-29 | 2012-02-29 | Artificial electromagnetic material and filter using same |
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| CN103296350A true CN103296350A (en) | 2013-09-11 |
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| CN2012100504269A Pending CN103296350A (en) | 2012-02-29 | 2012-02-29 | Artificial electromagnetic material and filter using same |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6208316B1 (en) * | 1995-10-02 | 2001-03-27 | Matra Marconi Space Uk Limited | Frequency selective surface devices for separating multiple frequencies |
| US20040008145A1 (en) * | 2002-07-11 | 2004-01-15 | Harris Corporation | Spatial filtering surface operative with antenna aperture for modifying aperture electric field |
| US20040017331A1 (en) * | 2002-07-29 | 2004-01-29 | Ball Aerospace And Technologies Corp. | Electronically reconfigurable microwave lens and shutter using cascaded frequency selective surfaces and polyimide macro-electro-mechanical systems |
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| US7855691B2 (en) * | 2008-08-07 | 2010-12-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Automotive radar using a metamaterial lens |
| CN202150533U (en) * | 2011-07-29 | 2012-02-22 | 深圳光启高等理工研究院 | Resonant cavity |
-
2012
- 2012-02-29 CN CN2012100504269A patent/CN103296350A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6208316B1 (en) * | 1995-10-02 | 2001-03-27 | Matra Marconi Space Uk Limited | Frequency selective surface devices for separating multiple frequencies |
| US20040008145A1 (en) * | 2002-07-11 | 2004-01-15 | Harris Corporation | Spatial filtering surface operative with antenna aperture for modifying aperture electric field |
| US20040017331A1 (en) * | 2002-07-29 | 2004-01-29 | Ball Aerospace And Technologies Corp. | Electronically reconfigurable microwave lens and shutter using cascaded frequency selective surfaces and polyimide macro-electro-mechanical systems |
| US6822622B2 (en) * | 2002-07-29 | 2004-11-23 | Ball Aerospace & Technologies Corp | Electronically reconfigurable microwave lens and shutter using cascaded frequency selective surfaces and polyimide macro-electro-mechanical systems |
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| US7855691B2 (en) * | 2008-08-07 | 2010-12-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Automotive radar using a metamaterial lens |
| CN202150533U (en) * | 2011-07-29 | 2012-02-22 | 深圳光启高等理工研究院 | Resonant cavity |
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Effective date of registration: 20210414 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Applicant after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Applicant before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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Application publication date: 20130911 |
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