CN105958209A - Double-incident type electromagnetic metamaterial structure - Google Patents
Double-incident type electromagnetic metamaterial structure Download PDFInfo
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- CN105958209A CN105958209A CN201610522215.9A CN201610522215A CN105958209A CN 105958209 A CN105958209 A CN 105958209A CN 201610522215 A CN201610522215 A CN 201610522215A CN 105958209 A CN105958209 A CN 105958209A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 36
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 8
- 230000035699 permeability Effects 0.000 description 5
- 241000826860 Trapezium Species 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to a left-handed material, and in particular relates to a double-incident type electromagnetic metamaterial structure. The electromagnetic metamaterial structure comprises a dielectric substrate and a metal strip covering the dielectric substrate, wherein two sets of metal wires are etched on the metal strip, each set of metal wires is composed of two metal wires which are reversely symmetrically etched on two sides of the dielectric substrate, and the two metal wires on the same side of the dielectric substrate and the metal strip form an isosceles trapezoid-shaped structure. The electromagnetic metamaterial is simple in structure, can achieve the two-dimensional left-hand character, and overcomes the complexity and limitation on incident direction of the traditional left-handed material. By changing the size parameter of the upper bottom of the isosceles trapezoid-shaped structure, the two-dimensional left-hand character can be achieved in different frequency domains, thus meeting the practical requirements of various working frequency bands.
Description
Technical field
The present invention relates to LHM, particularly a kind of double incoming electromagnetic Meta Materials, the practical value of LHM can be better achieved.
Background technology
LHM (left-handed mentamaterials, LHMs) it is that present on a kind of theory proposed in nineteen sixty-eight by the physicist Vector Veselago of the former Soviet Union, in a certain frequency range, DIELECTRIC CONSTANT ε and magnetic permeability μ are the negative special material being not present in nature.The implementation of negative permittivity and negative permittivity, i.e. periodic arrangement conducting metal bar (ROD) and metal openings resonant ring (SRRs) is have studied respectively at the physicist Pendry of the 30 Nian Hou Britain that this theoretical material proposes.The physicist such as the Smith in California, USA university San Diego branch school is manufactured that metallic rod and the combinative structure of split ring resonator realizing left hand characteristic in microwave band under the suggestion of Pendry first in calendar year 2001 subsequently, the plasma effect utilizing metallic rod realizes negative permittivity, utilizes the magnetic resonance effect of metal openings resonant ring to achieve negative pcrmeability.2002, the Itoh professor of the U.S. and Canadian professor Eleftheriades have put forward a kind of new material design method realizing left hand characteristic based on periodicity LC network, will the electromagnetism integrative-structure that is integrated in one of metal self plasma effect and magnetic resonance effect.The theoretical basis of Left-handed Material Design has been established in the proposition of ring bar structure and electromagnetism integrative-structure, and the peculiar electromagnetic characteristic at research surface LHM subsequently has the most wide application prospect in the field such as microband paste of perfect imaging, electromagnetism stealth, Electromagnetic Heating and antenna radar, has so far caused the research overbearing tide of one LHM.
The research of LHM subsequently substantially can be divided into two classes, i.e. electromagnetic wave to be parallel to dielectric-slab incidence by the incident direction of electromagnetic wave realizing left hand characteristic and be perpendicular to dielectric-slab incidence and realize left hand characteristic two class.The typical structure of parallel incidence has double S type, symmetrical annular, H type structure etc..Vertical incidence realizes the typical structure of left hand characteristic dendritic structure, fishing net structure etc..This two classes LHM all can only could realize left hand characteristic when electromagnetic wave is from specific a direction incidence, and in applying with reality, the requirement of required multi-direction many dimensions is not inconsistent.In recent years under scholars are continually striving to, double Z shaped structure, double Σ type structure and the proposition of double triangle bonding jumper structure, achieve realize left hand characteristic in electromagnetic wave vertical incidence under parallel incident two kinds of condition of incidence simultaneously, having stepped major step in the multidimensional research field of LHM, the multidirectional LHM of the most dimensions just can better meet application needs.
Summary of the invention
It is an object of the invention to overcome complexity and the limitation of incident direction of tradition LHM, propose a kind of novel pair of incident type electromagnetism Meta Materials.The preparation of this structure is simple, size is less, not only against the limitation of the actual application of one-dimensional LHM, and structure can be enable to realize double incident left hand characteristic in different frequency domains by changing the dimensional parameters of structure, be applicable to the application of various different operating frequency band occasion.
The design of the present invention is: a kind of double incident type electromagnetism metamaterial structures, described electromagnetism metamaterial structure includes medium substrate and covers the bonding jumper being engraved on described medium substrate, it is characterized in that on described bonding jumper, being etched with two groups of metal wires, each group of metal wire is formed by two metal line, two described metal line reverse symmetry are etched in the both sides of medium substrate, and the metal wire being positioned at medium substrate the same side forms " isosceles trapezoid " shape structure with bonding jumper.
Described medium substrate be dielectric constant be the aluminium oxide ceramics of 9.8, described bonding jumper is taked to cover copper technology and is etched in medium substrate both sides, and covering copper thickness is 0.01mm.
Described electromagnetism metamaterial structure includes two groups of metal wires, and two metal line being positioned at described medium substrate the same side form " isosceles trapezoid " shape structure with bonding jumper.
Described trapezium structure water table opening is respectively set to 0.1mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, and the frequency range that different scale left hand characteristic realizes is different.
Described strip width is a=6mm, and described bonding jumper height is L=10mm, and the span access location length described bonding jumper being used for etch metal wire is h=4mm, and described metal line-width is t=0.5mm.
The thickness of described medium substrate is d=0.3mm.
The beneficial effect that the present invention is reached:
1. present configuration is simple, easy to make, overcomes complexity and the unicity of incident direction of tradition LHM, and cost of manufacture is the cheapest.
2. present invention employs alumina ceramic material as medium substrate, it has higher hardness and heat-resisting quantity compared with general polymeric substrate, and structure can be made to have higher environmental suitability and stability.
3. the electromagnetism Meta Materials of the present invention can be in the case of the parallel incidence of electromagnetic wave and vertical incidence two kinds, all realize negative permittivity and negative magnetoconductivity, widen the incident angle of electromagnetic wave, the integration requirement in actual application can be met, there is double incident left hand characteristic, overcome the limitation of the actual application of one-dimensional LHM.
4. the electromagnetism Meta Materials of the present invention is by changing the dimensional parameters size at " isosceles trapezoid " the upper end, can realize double incident left hand characteristic, it is possible to meet the real requirement of various working band in different frequency domains.
Accompanying drawing explanation
Fig. 1 is the structure chart of the embodiment of the present invention 1；
Fig. 2 is S parameter amplitude (dB) figure of the embodiment of the present invention 1 electromagnetic wave vertical incidence；
Fig. 3 is the effective electromagnetic parameter figure of the embodiment of the present invention 1 electromagnetic wave vertical incidence；
Fig. 4 is S parameter amplitude (dB) figure of the embodiment of the present invention 1 electromagnetic wave glancing incidence；
Fig. 5 is the effective electromagnetic parameter figure of the embodiment of the present invention 1 electromagnetic wave glancing incidence；
Fig. 6 is the s of the embodiment of the present invention 2 electromagnetic wave vertical incidence equivalent permeability curve chart when taking each value；
Fig. 7 is the s of the embodiment of the present invention 2 electromagnetic wave vertical incidence effective dielectric constant curve chart when taking each value；
Fig. 8 is the s of the embodiment of the present invention 2 electromagnetic wave glancing incidence equivalent permeability curve chart when taking each value；
Fig. 9 is the s of the embodiment of the present invention 2 electromagnetic wave glancing incidence effective dielectric constant curve chart when taking each value；
Detailed description of the invention
Double incident LHM structures of the present invention are by medium substrate and cover the bonding jumper being engraved on described medium substrate and form, two groups of metal wires it are etched with on described bonding jumper, each group of metal wire is made up of two metal line, two described metal line reverse symmetry are etched in the both sides of medium substrate, and the metal wire being positioned at medium substrate the same side forms " isosceles trapezoid " shape shape structure with bonding jumper.
The present invention is by changing " isosceles trapezoid " water table opening parameter, it is possible to realize left hand characteristic in different frequency domains, and the left hand characteristic of each structure realizes meeting certain value evaluation between frequency domain.
The specific embodiment of the present invention be described in detail below:
Embodiment 1:
Such as Fig. 1, the electromagnetism metamaterial structure of the present embodiment includes medium substrate and the bonding jumper overlayed on described medium substrate, being etched with two groups of metal wires on described bonding jumper, two metal line in each group of metal wire take to cover copper technology, and reverse symmetry is etched in the both sides of medium substrate.The copper thickness that covers of the present embodiment is 0.01mm, strip width a=6mm, highly L=10mm, for etching span access location length h=4mm of metal wire, metal line-width t=0.5mm, bottom width degree s=0.1mm on trapezium structure on bonding jumper.Medium substrate uses dielectric constant to be the aluminium oxide ceramics of 9.8, and dielectric substrate thickness is d=0.3mm.
Hang down perpendicular and parallel two incident directions analytical structure unit respectively according to electromagnetic wave, first analyze the situation of vertical incidence medium substrate, if Fig. 2 is the amplitude curve of this structure S parameter, if Fig. 3 is effective electromagnetic parameter figure, this structure ε and μ real part in 7.99-8.09GHz frequency band is negative simultaneously, left hand passband occurs.When the parallel incidence of electromagnetic wave, being the amplitude curve of the S parameter of this structure such as Fig. 4, as it is shown in figure 5, this structure ε and μ real part in 8.88-9.1GHz frequency range and 11.68-11.98GHz frequency range is negative simultaneously, i.e. there is left hand passband in effective electromagnetic parameter.
Under the conditions of two kinds of incidence, the isosceles trapezoid metal structure of former and later two reverse symmetry of dielectric-slab can produce coupled resonance loop under the effect of electromagnetic wave magnetic-field component, thus realizes negative magnetoconductivity, but under the conditions of two kinds, magnetic resonance coupling principle is different.In the case of electromagnetic wave vertically injects medium substrate, the isosceles trapezoid bonding jumper of medium substrate both sides intercouples under electromagnetic field effect, forms magnetic resonance thus produces negative magnetoconductivity；Electromagnetic wave is parallel inject medium substrate in the case of, the isosceles trapezoid bonding jumper of medium substrate both sides due to phase-inversion symmetric place, under electromagnetic field effect, define ring current loop, thus create magnetic resonance, it is achieved that negative magnetoconductivity.Negative permittivity in the case of two kinds is all to be produced by the plasma effect of isosceles trapezoid bonding jumper itself, it is achieved thereby that double incident DNG feature.
Embodiment 2:
The present embodiment, on the basis of embodiment 1 structure, changes the dimensional parameters at the end in isosceles trapezoid, takes s=0.5mm, s=1.0mm, s=1.5mm, s=2mm, s=2.5mm, s=3mm respectively when etching metal wire on described bonding jumper.Fig. 6 show equivalent permeability curve chart when s in the case of electromagnetic wave vertical incidence takes above-mentioned each value, and Fig. 7 is effective dielectric constant curve chart.According to s value difference, in 7.87-7.94GHz, 7.84-7.9GHz, 7.99-8.04GHz, 8.11-8.15GHz, 8.32-8.35GHz, 8.53-8.56GHz frequency band, ε and μ real part is negative simultaneously respectively, it is achieved left hand characteristic；Equivalence permeability curcve figure under each value condition when Fig. 8 show electromagnetic wave parallel incidence, Fig. 9 is effective dielectric constant curve, it can be seen that structure is respectively at 8.47-8.64GHz, 11.81-12.08GHz；8.85-9GHz, 12.18-12.47GHz；8.76-8.87GHz, 12.48-12.78GHz；8.62-8.71GHz, 12.81-13.05GHz；In 8.65-8.68GHz, 13.21-13.43GHz frequency domain, ε and μ real part is negative simultaneously, it is achieved left hand characteristic, and when s=3mm, realizes without left hand characteristic.During incidence parallel due to electromagnetic wave, structure defines two return circuits, is to produced two DNG feature frequency ranges of height.
In comparative example 2, under s value different situations, the effective electromagnetic parameter curve of structure understands, during electromagnetic wave vertical incidence, s value often increases the DNG feature of 0.5mm structure and realizes frequency range to high-frequency mobile about 0.2GHz, electromagnetic wave parallel incident time s value often increase the higher DNG feature of 0.5mm structure and realize frequency range to high-frequency mobile about 0.4GHz, and relatively low DNG feature realizes frequency range and is held essentially constant.
Double incident type electromagnetism metamaterial structures of the present invention, in the case of the parallel incidence of electromagnetic wave and vertical incidence two kinds, can realize negative permittivity and negative magnetoconductivity simultaneously.Can be by changing the size at " isosceles trapezoid " the upper end based on this base structure, it is possible in different frequency ranges, realize double incident left hand characteristic, the functional need of various working frequency range can be met.
Claims (6)
1. a double incident type electromagnetism metamaterial structure, described electromagnetism metamaterial structure includes medium substrate and covers the bonding jumper being engraved on described medium substrate, it is characterized in that between described bonding jumper, being etched with two groups of metal wires, often group metal wire is made up of two metal line, two groups of described metal wire reverse symmetry are etched in the both sides of medium substrate, and the metal wire being positioned at medium substrate the same side forms " isosceles trapezoid " shape structure with bonding jumper.
The most according to claim 1 pair of incident type electromagnetism metamaterial structure, it is characterised in that described medium substrate be dielectric constant be the aluminium oxide ceramics of 9.8, described metal wire is taked to cover copper technology and is etched in medium substrate both sides, and covering copper thickness is 0.01mm.
The most according to claim 1 pair of incident type electromagnetism metamaterial structure, it is characterised in that described electromagnetism metamaterial structure includes two groups of metal wires, two metal line being positioned at described medium substrate the same side form " isosceles trapezoid " structure with bonding jumper.
The most according to claim 1 pair of incident type electromagnetism metamaterial structure, it is characterised in that the upper bottom width degree of described isosceles trapezoidal structure realizes frequency range difference according to left hand characteristic and is respectively set to 0.1mm, 0.5mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm.
The most according to claim 1 pair of incident type electromagnetism metamaterial structure, it is characterized in that described strip width is 6m, described bonding jumper height is 10mm, and the span access location length described bonding jumper being used for etch metal wire is 4mm, and described metal line-width is 0.5mm.
The most according to claim 1 pair of incident type electromagnetism metamaterial structure, it is characterised in that the thickness of described medium substrate is 0.3m.
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| CN201610522215.9A CN105958209B (en) | 2016-07-05 | 2016-07-05 | Double-incidence left-handed material structure |
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| CN201610522215.9A CN105958209B (en) | 2016-07-05 | 2016-07-05 | Double-incidence left-handed material structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221753A (en) * | 2017-05-22 | 2017-09-29 | 西安电子科技大学 | Multiband LHM structure |
| CN107331963A (en) * | 2017-08-30 | 2017-11-07 | 中国铁塔股份有限公司长春市分公司 | A kind of isosceles trapezoid antenna house |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120049128A (en) * | 2010-11-08 | 2012-05-16 | 한국전자통신연구원 | Integrated antenna device module for generating terahertz continous wave and fabrication method thereof |
| CN102856658A (en) * | 2012-09-18 | 2013-01-02 | 中国矿业大学(北京) | Double-incident left-handed metamaterial based on double E-shaped metal strips |
| CN103295474A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Advertisement display screen based on metamaterial satellite antenna |
| CN103346407A (en) * | 2013-06-15 | 2013-10-09 | 厦门大学 | Left-handed material formed by E-shaped mutually embedded structures and provided with double-rod-shaped tuning structure |
| CN103399369A (en) * | 2013-07-16 | 2013-11-20 | 哈尔滨工程大学 | Transmission optical device based on artificial electromagnetic material |
| CN103794865A (en) * | 2013-07-01 | 2014-05-14 | 深圳光启创新技术有限公司 | Meta material, antenna device and antenna cover |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
| CN104393419A (en) * | 2014-11-25 | 2015-03-04 | 张永超 | Negative magnetic permeability meta-material |
| CN204257824U (en) * | 2014-11-17 | 2015-04-08 | 中国矿业大学(北京) | A kind of two-dimensional left-handed material structure derived |
| CN206742502U (en) * | 2016-07-05 | 2017-12-12 | 中国矿业大学(北京) | A kind of double incident type electromagnetism Meta Materials |
-
2016
- 2016-07-05 CN CN201610522215.9A patent/CN105958209B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120049128A (en) * | 2010-11-08 | 2012-05-16 | 한국전자통신연구원 | Integrated antenna device module for generating terahertz continous wave and fabrication method thereof |
| CN103295474A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Advertisement display screen based on metamaterial satellite antenna |
| CN102856658A (en) * | 2012-09-18 | 2013-01-02 | 中国矿业大学(北京) | Double-incident left-handed metamaterial based on double E-shaped metal strips |
| CN103346407A (en) * | 2013-06-15 | 2013-10-09 | 厦门大学 | Left-handed material formed by E-shaped mutually embedded structures and provided with double-rod-shaped tuning structure |
| CN103794865A (en) * | 2013-07-01 | 2014-05-14 | 深圳光启创新技术有限公司 | Meta material, antenna device and antenna cover |
| CN103399369A (en) * | 2013-07-16 | 2013-11-20 | 哈尔滨工程大学 | Transmission optical device based on artificial electromagnetic material |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
| CN204257824U (en) * | 2014-11-17 | 2015-04-08 | 中国矿业大学(北京) | A kind of two-dimensional left-handed material structure derived |
| CN104393419A (en) * | 2014-11-25 | 2015-03-04 | 张永超 | Negative magnetic permeability meta-material |
| CN206742502U (en) * | 2016-07-05 | 2017-12-12 | 中国矿业大学(北京) | A kind of double incident type electromagnetism Meta Materials |
Non-Patent Citations (3)
| Title |
|---|
| M. SMIERZCHALSKI: "《A novel approach for the characterization of bi-anisotropic metamaterials using oblique incidence》", 《2013 7TH INTERNATIONAL CONGRESS ON ADVANCED ELECTROMAGNETIC MATERIALS IN MICROWAVES AND OPTICS》 * |
| 周辅坤: "《一种用于60GHz通信的S型结构左手材料的设计》", 《光子学报》 * |
| 王海侠: "《基于双Z形金属条的双入射型左手材料研究》", 《北京邮电大学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221753A (en) * | 2017-05-22 | 2017-09-29 | 西安电子科技大学 | Multiband LHM structure |
| CN107221753B (en) * | 2017-05-22 | 2020-01-31 | 西安电子科技大学 | Multi-band left-handed material structure |
| CN107331963A (en) * | 2017-08-30 | 2017-11-07 | 中国铁塔股份有限公司长春市分公司 | A kind of isosceles trapezoid antenna house |
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