CN107834209A - A kind of wide angle polarizes insensitive Terahertz three with absorber - Google Patents
A kind of wide angle polarizes insensitive Terahertz three with absorber Download PDFInfo
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- CN107834209A CN107834209A CN201711278609.5A CN201711278609A CN107834209A CN 107834209 A CN107834209 A CN 107834209A CN 201711278609 A CN201711278609 A CN 201711278609A CN 107834209 A CN107834209 A CN 107834209A
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 230000009102 absorption Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a kind of three frequency band meta-material absorbers, described metamaterial structure is followed successively by the metal detail of design of bottom total reflection metal level, middle lossy medium layer and top layer from bottom to top, and three-decker is brought into close contact.The metal patterns of design are mutually discrete three part of same plane, including outer square ring, middle circle and center band short side class cross structure, and three parts are the same as the same center of square structure unit.The present invention has the characteristics that absorptivity is high, polarize unrelated, broad-angle-incident, and has multiple absorption frequencies to be operated in terahertz wave band.
Description
Technical field
The invention belongs to Meta Materials technical field, more particularly to a kind of three frequency band meta-material absorbers.
Background technology
Artificial synthesized Meta Materials have the extraordinary electromagnetic property that conventional material does not possess, on the basis without prejudice to physics law
On can carry out synthesizing new material according to the wish of people and break through natural law limitation, resulting in the wide of scientist and people
General concern.In Terahertz Technology field, corresponding material is produced to this frequency range due to rarely having in nature, it is this can be according to people
The research of new material that is designed of wish just seem increasingly important for breaking through Terahertz blank.Since first Meta Materials
Since absorber is suggested, Meta Materials just illustrate its unusual characteristic to people, and the perfection to electromagnetic wave absorbs, but
It is that Meta Materials are accompanied by the problem of many to be solved in the external actual application of characteristic absorbed except its perfection, it is such as single
Frequency band, polarization sensitive, and can only operate in the ranges of incidence angles of very little.
The content of the invention
It is an object of the invention to provide a kind of three frequency meta-material absorbers, and with wide-angle and polarize unrelated
Characteristic.
The technical solution of the object of the invention：Each absorptive unit is sub- by bottom metal layers, polyamides successively from top to bottom
Metal patterns composition at the top of amine lossy medium layer and tight attached dielectric layer, three parts are brought into close contact.Described metal patterns are by outer
Square loop, inner ring annulus and center class cross structure composition are enclosed, square loop, annulus is identical with class cross structure center and is
Four times of symmetrical centrosymmetric structures.
Present invention additionally comprises some architectural features：The metal patterns of design are three mutually discrete parts of same plane, are wrapped
Outer square ring, middle circle and center band short side class cross structure are included, three parts are the same as the same center of square structure unit.
Central cross structure band short side, bond length are more than line width and less than the half of cross structure length.
Its remarkable advantage is compared with prior art：The top-level metallic of three frequencies meta-material absorber structure proposed by the present invention
Film is metal Fang Huan, metal ring and central metal class cross structure respectively by three kinds of structure compositions, and these three structures can be with
There is provided three kinds of different electromagnetic wave incident patterns to interfere, so as to realize the assimilation effect of three frequencies.
The underlying metal film of double frequency meta-material absorber structure proposed by the present invention is all-metal construction, using this knot
Structure can ensure no Electromgnetically-transparent, enter the quilt in the presence of dielectric loss and ohmic loss of the electromagnetic wave inside absorber
All lose.
Structure of the invention is simply beneficial to processing, realizes that multifrequency absorbs using plane accumulation mode, and absorption frequency is more, absorbs
Rate is high：Absorption frequency with three absorptivities more than 99.9%.
Invention unit structure uses four times of symmetrical structures under plane, and this structure can absorb any polarisation angles
Electromagnetic wave.
Three frequencies meta-material absorber proposed by the present invention has wide-angle characteristic, when incident angle increases to 50 degree according to
It is old to keep more than 90% absorptivity.
Brief description of the drawings
Fig. 1 is the 3-D view of three frequency meta-material absorber cellular constructions of the invention.
Fig. 2 is the front view of invention unit structure.
Fig. 3 is the absorption characteristic schematic diagram of the present invention.
Fig. 4 is absorptivity schematic diagram of the present invention to oblique incidence electromagnetic wave.
Specific embodiment
It is further described in detail below in conjunction with the accompanying drawings with technical scheme.
With reference to Fig. 1, Fig. 2, three frequency meta-material absorbers of the invention, including bottom metal layers 1, polyimide media layer 2
With top-level metallic detail of design 3；Bottom metal layers 1 and top metal detail of design 3 tightly overlay on the two of polyimide media layer 2
Side；The dielectric constant of polyimide media layer is 3.5, loss tangent 0.02, and thickness is 8 μm；Bottom metal layers and top
Layer metal detail of design uses electrical conductivity as 5.96 × 107S/m, thickness are 0.2 μm;Meta-material absorber of the present invention
Lattice constant corresponding to unit is that top-level metallic detail of design is made up of three parts：Outer square ring 4, internal annulus 5 and in
Heart class cross structure 6；The length of side of wherein outer square ring is slightly less than unit size, is 88 μm, and internal annular radii is 35 μm,
Center class cross structure band short side, long edge lengths are 40 μm, and architectural feature is that bond length is more than line width and is less than stauros
The half of structure length, the line widths of metal patterns is 4 μm in the present invention；Three parts detail of design is tightly attached on dielectric layer surface,
And center is in same point.Fig. 3 is absorption characteristic figure of the present invention in THz wave bands, in 0.3THz to 2THz frequency ranges
Inside there are three independent absorption frequencies, absorptivity reaches more than 99%；Fig. 4 inhales for three frequencies Meta Materials provided by the invention
Absorption characteristic of the device in the case of incidence angles degree is received, it can be seen that the present invention is at absorption frequency point pair
Rake angle incidence still remains good absorption characteristic, when incident angle increases to 50 degree, absorptivity remain at 90% with
On.Because invention unit structure uses four times of symmetrical structures under plane, so TE, TM polarization are insensitive.
Claims (3)
1. a kind of three frequency band meta-material absorbers, described metamaterial structure be followed successively by from bottom to top bottom total reflection metal level,
The metal detail of design of middle lossy medium layer and top layer, three-decker are brought into close contact；The metal patterns of design are same flat
Three mutually discrete parts of face, including outer square ring, middle circle and center band short side class cross structure, three parts are the same as just
The same center of square structure unit；The present invention has the characteristics that absorptivity is high, polarize unrelated, broad-angle-incident, and has three absorptions
Frequency is operated in terahertz wave band.
2. three frequencies meta-material absorber according to claim 1 is characterized in that：
The Top-layer Design Method pattern is mutually discrete three part of same plane, including outer square ring, middle circle and in
Its central band short side class cross structure；Middle lossy medium layer uses polyimides of the dielectric constant for 3.5, loss angle tangent 0.02.
3. the three frequency meta-material absorbers according to claim 1 or claim 2 is characterized in that central cross structure band
Short side；Bond length is more than line width and less than the half of cross structure length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278609.5A CN107834209A (en) | 2017-12-06 | 2017-12-06 | A kind of wide angle polarizes insensitive Terahertz three with absorber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711278609.5A CN107834209A (en) | 2017-12-06 | 2017-12-06 | A kind of wide angle polarizes insensitive Terahertz three with absorber |
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| Publication Number | Publication Date |
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| CN107834209A true CN107834209A (en) | 2018-03-23 |
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| CN201711278609.5A Pending CN107834209A (en) | 2017-12-06 | 2017-12-06 | A kind of wide angle polarizes insensitive Terahertz three with absorber |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718006A (en) * | 2018-04-24 | 2018-10-30 | 西安理工大学 | A kind of three wave band topology Meta Materials Terahertz wave absorbing devices |
| CN109066096A (en) * | 2018-07-24 | 2018-12-21 | 南京邮电大学 | A kind of THz ultra wide band wave absorbing device based on unequal spacing stepped construction |
| CN109088172A (en) * | 2018-08-20 | 2018-12-25 | 成都邑电信息技术服务有限公司 | A kind of detail three bands complex type absorbent structures of load based on frequency-selective surfaces |
| CN109687162A (en) * | 2018-11-19 | 2019-04-26 | 电子科技大学 | A kind of adjustable three frequency ranges THz meta-material absorber based on dirac material |
| CN110544832A (en) * | 2019-08-23 | 2019-12-06 | 南京理工大学 | Dynamic camouflage super-surface with double-frequency point electromagnetic characteristic capable of being actively and electrically adjusted |
| CN111883936A (en) * | 2020-09-03 | 2020-11-03 | 浙江科技学院 | Terahertz electromagnetic absorber based on metamaterial |
| CN112928455A (en) * | 2021-02-04 | 2021-06-08 | 北京邮电大学 | Metamaterial RFID (radio frequency identification) tag antenna |
| CN113013631A (en) * | 2021-02-26 | 2021-06-22 | 成都信息工程大学 | Dual-frequency functional super surface and design method thereof |
| CN113113776A (en) * | 2021-03-31 | 2021-07-13 | 西安理工大学 | Terahertz composite metamaterial multi-band absorber and bidirectional design method |
| CN114204273A (en) * | 2021-12-15 | 2022-03-18 | 吉林大学 | Ultrathin flexible conformal metamaterial wave absorber and preparation method thereof |
| CN117498043A (en) * | 2023-12-29 | 2024-02-02 | 电子科技大学 | Graphene multiband terahertz function wave absorber |
| CN117791174A (en) * | 2024-01-05 | 2024-03-29 | 常熟理工学院 | Dynamic adjustable terahertz wave absorber based on vanadium dioxide and photoconductive silicon |
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| KR20110109753A (en) * | 2010-03-31 | 2011-10-06 | 한국전자통신연구원 | Apparatus for absorbing electromagnetic wave and method for manufacturing thereof in a wireless communication system |
| CN102291970A (en) * | 2011-05-06 | 2011-12-21 | 东南大学 | Single frequency band microwave absorber and multiple frequency band microwave absorber |
| CN104485515A (en) * | 2014-10-27 | 2015-04-01 | 武汉市工程科学技术研究院 | A broadband absorbing material loaded with lumped elements |
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
| CN208256914U (en) * | 2017-12-06 | 2018-12-18 | 哈尔滨理工大学 | A kind of wide angle polarizes insensitive Terahertz three with absorber |
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2017
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Patent Citations (5)
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| KR20110109753A (en) * | 2010-03-31 | 2011-10-06 | 한국전자통신연구원 | Apparatus for absorbing electromagnetic wave and method for manufacturing thereof in a wireless communication system |
| CN102291970A (en) * | 2011-05-06 | 2011-12-21 | 东南大学 | Single frequency band microwave absorber and multiple frequency band microwave absorber |
| CN104485515A (en) * | 2014-10-27 | 2015-04-01 | 武汉市工程科学技术研究院 | A broadband absorbing material loaded with lumped elements |
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
| CN208256914U (en) * | 2017-12-06 | 2018-12-18 | 哈尔滨理工大学 | A kind of wide angle polarizes insensitive Terahertz three with absorber |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718006A (en) * | 2018-04-24 | 2018-10-30 | 西安理工大学 | A kind of three wave band topology Meta Materials Terahertz wave absorbing devices |
| CN108718006B (en) * | 2018-04-24 | 2020-08-18 | 西安理工大学 | Three-band topological metamaterial terahertz wave absorber |
| CN109066096A (en) * | 2018-07-24 | 2018-12-21 | 南京邮电大学 | A kind of THz ultra wide band wave absorbing device based on unequal spacing stepped construction |
| CN109088172A (en) * | 2018-08-20 | 2018-12-25 | 成都邑电信息技术服务有限公司 | A kind of detail three bands complex type absorbent structures of load based on frequency-selective surfaces |
| CN109687162A (en) * | 2018-11-19 | 2019-04-26 | 电子科技大学 | A kind of adjustable three frequency ranges THz meta-material absorber based on dirac material |
| CN110544832A (en) * | 2019-08-23 | 2019-12-06 | 南京理工大学 | Dynamic camouflage super-surface with double-frequency point electromagnetic characteristic capable of being actively and electrically adjusted |
| CN111883936A (en) * | 2020-09-03 | 2020-11-03 | 浙江科技学院 | Terahertz electromagnetic absorber based on metamaterial |
| CN112928455A (en) * | 2021-02-04 | 2021-06-08 | 北京邮电大学 | Metamaterial RFID (radio frequency identification) tag antenna |
| CN113013631A (en) * | 2021-02-26 | 2021-06-22 | 成都信息工程大学 | Dual-frequency functional super surface and design method thereof |
| CN113113776A (en) * | 2021-03-31 | 2021-07-13 | 西安理工大学 | Terahertz composite metamaterial multi-band absorber and bidirectional design method |
| CN113113776B (en) * | 2021-03-31 | 2022-08-02 | 西安理工大学 | Terahertz composite metamaterial multi-band absorber and bidirectional design method |
| CN114204273A (en) * | 2021-12-15 | 2022-03-18 | 吉林大学 | Ultrathin flexible conformal metamaterial wave absorber and preparation method thereof |
| CN117498043A (en) * | 2023-12-29 | 2024-02-02 | 电子科技大学 | Graphene multiband terahertz function wave absorber |
| CN117498043B (en) * | 2023-12-29 | 2024-03-19 | 电子科技大学 | Graphene multiband terahertz function wave absorber |
| CN117791174A (en) * | 2024-01-05 | 2024-03-29 | 常熟理工学院 | Dynamic adjustable terahertz wave absorber based on vanadium dioxide and photoconductive silicon |
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Application publication date: 20180323 |
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