CN112134025B - Multi-frequency metamaterial wave absorber - Google Patents
Multi-frequency metamaterial wave absorber Download PDFInfo
- Publication number
- CN112134025B CN112134025B CN202011021578.7A CN202011021578A CN112134025B CN 112134025 B CN112134025 B CN 112134025B CN 202011021578 A CN202011021578 A CN 202011021578A CN 112134025 B CN112134025 B CN 112134025B
- Authority
- CN
- China
- Prior art keywords
- wave absorber
- square ring
- frequency
- metal pattern
- pattern layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
Landscapes
- Aerials With Secondary Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a multi-frequency metamaterial wave absorber which sequentially comprises a metal thin film layer, a loss dielectric layer and a metal pattern layer from bottom to top; the metal pattern layer comprises an open square ring with an opening and a tooth-shaped structure which is positioned inside the open square ring and is provided with a plurality of 7-shaped teeth. The metal pattern layer is designed into a shape comprising the open square ring with the opening and a tooth-shaped structure with a plurality of 7-shaped teeth positioned inside the open square ring, so that the metal pattern layer has high symmetry and polarization insensitivity.
Description
Technical Field
The invention relates to the technical field of wave-absorbing materials, in particular to a multi-frequency metamaterial wave absorber.
Background
As a composite material with an artificially designed structure, the metamaterial draws high attention from the scientific community due to unique physical properties of the metamaterial, such as negative refraction materials, perfect lenses, invisible cloaks and the like. The metamaterial wave absorber is an important application field of the metamaterial, and has the advantages of flexible design, adjustable response, thin thickness and the like. In addition, the metamaterial wave absorber can realize ultra-wide band and extremely-narrow band through a well-designed structure, and is widely applied to the fields of stealth materials, frequency selective surfaces, terahertz imaging, intelligent communication, photoelectric detection and the like. In recent years, researchers have made a lot of researches in the direction of a multiband metamaterial wave absorber, but the main problem of the multiband metamaterial wave absorber is that the absorption rate under large-angle incident waves is very low, so that the practical application of the device is greatly limited.
Disclosure of Invention
The invention aims to provide a multi-frequency metamaterial wave absorber to improve the absorption rate of the wave absorber under large-angle incident waves.
In order to achieve the purpose, the invention provides the following scheme:
a multi-frequency metamaterial wave absorber comprises a metal thin film layer, a loss dielectric layer and a metal pattern layer from bottom to top in sequence;
the metal pattern layer comprises an open square ring with an opening and a tooth-shaped structure which is positioned inside the open square ring and is provided with a plurality of 7-shaped teeth.
Optionally, the number of the openings of the square opening ring is four, and the four openings respectively use the central points of the four sides of the square opening ring as the center.
Optionally, the absorption frequency of the wave absorber is adjusted by adjusting the size of the opening of the square ring.
Optionally, the middle part of the tooth-shaped structure is a cuboid;
a plurality of '7' shaped teeth are evenly distributed on the outer part of the cuboid.
Optionally, the 7-shaped teeth comprise long longitudinal rods, transverse rods and short longitudinal rods;
one end of the short longitudinal rod is vertically connected with one end of the transverse rod, and the other end of the transverse rod is vertically connected with one end of the long longitudinal rod;
the other end of the long vertical rod is connected with the cuboid.
Optionally, the number of the 7-shaped teeth is 8, and the included angle between two adjacent 7-shaped teeth is 45 °.
Optionally, the metal thin film layer and the metal pattern layer are made of metal copper.
Optionally, the material of the lossy dielectric layer is a photosensitive resin material.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a multi-frequency metamaterial wave absorber which sequentially comprises a metal film layer, a loss dielectric layer and a metal pattern layer from bottom to top; the metal pattern layer comprises an open square ring with an opening and a tooth-shaped structure which is positioned inside the open square ring and is provided with a plurality of 7-shaped teeth. The metal pattern layer is designed into a shape comprising the open square ring with the opening and a tooth-shaped structure with a plurality of 7-shaped teeth positioned inside the open square ring, so that the metal pattern layer has high symmetry and polarization insensitivity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a multi-frequency metamaterial wave absorber provided by the present invention;
FIG. 2 is a top view of a structure of a multi-frequency metamaterial wave absorber provided in the present invention;
FIG. 3 is a front view of a structure of a multi-frequency metamaterial wave absorber provided by the present invention;
FIG. 4 is a graph showing the results of a simulation of the absorption rate of the absorber at normal incidence according to the present invention;
FIG. 5 is a diagram showing the result of the absorption rate simulation of the wave absorber provided by the present invention under the condition of different polarization angles of TE polarized waves;
FIG. 6 is a graph showing the absorption rate simulation result of the wave absorber provided by the present invention under different incident angles of TE polarized waves;
FIG. 7 is a graph showing the results of the absorption rate simulation of TE polarized waves of the absorbers having different opening sizes according to the present invention.
Detailed Description
The invention aims to provide a multi-frequency metamaterial wave absorber to improve the absorption rate of the wave absorber under large-angle incident waves.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-3, the wave absorber of the present invention comprises a bottom metal thin film layer, a middle lossy dielectric layer, and a top metal pattern layer, which are sequentially arranged from bottom to top. The metal pattern layer on the top layer consists of a square ring with 4 openings and 8 7-shaped structures which are rotated by 45 degrees. The bottom metal film is an all-metal film. In the specific implementation process, the corresponding structural arrangement comprises:
the dielectric substrate (loss dielectric layer) is of a cubic structure with the side length of a and the thickness of h, and the thicknesses of the metal pattern layer on the top layer and the metal film layer on the bottom layer are both t. The outer side length of the square open ring is b, the ring width is w1, and the opening distance (opening size) is b 1. The height of the 7-shaped teeth is h1, the side length of the upper part (transverse rod) is L, the height of the left part (short longitudinal rod) is h2, the ring width is w2, and the ring widths of all the positions are equal. The middle parts of 8 7-shaped teeth are filled with cuboids with the side length of w, and the rotating angle of the adjacent seven-shaped structures is 45 degrees.
In a specific application, the following are set:
22mm for a, 1mm for h, 0.02mm for t, 20mm for b, 1.5mm for w1, 3mm for b1, 7mm for h1, 3.7mm for L, 2.2mm for h2, 1mm for w2, 3mm for w, and 45 ° for θ. The dielectric layer material is photosensitive resin material, the dielectric constant is 2.9, and the loss tangent is 0.02.
Fig. 4 is a graph of a simulation result of the normal incidence absorptance of the absorber obtained by the simulation software. It can be seen from fig. 4 that the absorption rate for normal incidence is also high.
Fig. 5 is a diagram of the result of the absorption rate simulation of the absorber under different polarization angles of the TE polarized wave, which is obtained by simulation software. The wave absorption rate curves under different polarization angles are consistent, so that the wave absorber has polarization insensitivity.
Fig. 6 is a graph showing the results of the absorption rate simulation by simulation software for different oblique incident angles of the TE polarized wave. When the angle of incidence reaches 45 deg., the absorption is higher than 0.9. When the angle of incidence reaches 60 deg., the absorption is also higher than 0.8. Therefore, the wave absorber has good absorption performance under the condition of large-angle oblique incidence.
Fig. 7 is a graph of the results of absorptance simulation at different opening pitches obtained by simulation software. As the opening pitch increases, the second and third absorption peaks shift to the right.
The wave absorber is a multi-frequency metamaterial wave absorber working in a C-K wave band, and incident waves of multiple frequency points are perfectly absorbed by utilizing the mutually coupled resonance units. Compared with the traditional multi-frequency metamaterial wave absorber, the multi-frequency metamaterial wave absorber is thinner in structure thickness, smaller in volume and easy to machine. The absorption frequency of the wave absorber can be changed by changing the opening distance of the square opening ring. The absorption rate is high under the condition of large-angle incident waves, and the polarization insensitivity of the incident waves is realized.
Compared with the prior art, the invention has the following advantages:
1. for the multi-frequency metamaterial wave absorber, the absorption rate of the multi-frequency metamaterial wave absorber at 3 working frequency points of the multi-frequency metamaterial wave absorber reaches over 98 percent for vertically incident electromagnetic waves.
2. The multi-frequency metamaterial wave absorber has high symmetry, so that the multi-frequency metamaterial wave absorber has the polarization insensitivity.
3. The multi-frequency metamaterial wave absorber can change the position of an absorption peak by changing the opening distance of the opening square ring.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation manner of the present invention are explained by applying specific examples, the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof, the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
Claims (4)
1. The multi-frequency metamaterial wave absorber is characterized by comprising a metal thin film layer, a loss dielectric layer and a metal pattern layer from bottom to top in sequence;
the metal pattern layer comprises an open square ring with an opening and a tooth-shaped structure which is positioned in the open square ring and is provided with a plurality of 7-shaped teeth;
the number of the openings of the opening square ring is four, and the four openings respectively use the center points of four edges of the opening square ring as centers;
the middle part of the tooth-shaped structure is a cuboid;
a plurality of 7-shaped teeth are uniformly distributed outside the cuboid;
the 7-shaped teeth comprise long longitudinal rods, transverse rods and short longitudinal rods;
one end of the short longitudinal rod is vertically connected with one end of the transverse rod, and the other end of the transverse rod is vertically connected with one end of the long longitudinal rod;
the other end of the long longitudinal rod is connected with the cuboid;
the number of the 7-shaped teeth is 8, and the included angle between every two adjacent 7-shaped teeth is 45 degrees.
2. The multi-frequency metamaterial wave absorber of claim 1, wherein the absorption frequency of the wave absorber is adjusted by adjusting the size of the openings of the square ring of openings.
3. The multi-frequency metamaterial wave absorber of claim 1, wherein the material of the metal thin film layer and the metal pattern layer is copper.
4. The multi-frequency metamaterial wave absorber of claim 1, wherein the material of the lossy dielectric layer is a photosensitive resin material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011021578.7A CN112134025B (en) | 2020-09-25 | 2020-09-25 | Multi-frequency metamaterial wave absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011021578.7A CN112134025B (en) | 2020-09-25 | 2020-09-25 | Multi-frequency metamaterial wave absorber |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112134025A CN112134025A (en) | 2020-12-25 |
CN112134025B true CN112134025B (en) | 2022-06-10 |
Family
ID=73839294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011021578.7A Active CN112134025B (en) | 2020-09-25 | 2020-09-25 | Multi-frequency metamaterial wave absorber |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112134025B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113571918B (en) * | 2021-06-25 | 2024-03-22 | 浙江工业大学 | Transparent hidden body based on bow-shaped and internal symmetrical structure thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007095830A (en) * | 2005-09-27 | 2007-04-12 | Nitta Ind Corp | Electromagnetic wave absorber |
EP2677005A1 (en) * | 2012-06-21 | 2013-12-25 | Nitto Denko Corporation | Silicone resin composition, semi-cured material sheet, producing method of silicone cured material, light emitting diode device, and producing method thereof |
GB201403389D0 (en) * | 2014-02-26 | 2014-04-09 | Medical Wireless Sensing Ltd | Sensor |
CN103943967A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Ultrathin metallic resistance composite multi-frequency wave-absorbing material |
CN104220965A (en) * | 2012-01-26 | 2014-12-17 | 柯尼卡美能达株式会社 | Touch-panel-equipped liquid crystal display device |
CN104936771A (en) * | 2013-01-22 | 2015-09-23 | 埃西勒国际通用光学公司 | Machine for coating an optical article with a predetermined coating composition and method for using the machine |
CN107554009A (en) * | 2016-07-01 | 2018-01-09 | 现代自动车株式会社 | Electromagnetic wave absorb |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9030286B2 (en) * | 2009-04-08 | 2015-05-12 | New Jersey Institute Of Technology | Metamaterials with terahertz response and methods of making same |
CN202487770U (en) * | 2012-03-02 | 2012-10-10 | 深圳光启创新技术有限公司 | Wide-band metamaterial antenna housing and antenna system |
CN103717044B (en) * | 2012-09-29 | 2018-05-22 | 深圳光启创新技术有限公司 | A kind of absorbing material |
CN103018926A (en) * | 2012-12-13 | 2013-04-03 | 大连理工大学 | Tunable microwave-absorbing artificial electromagnetic metamaterial based on topology/graphene |
CN108507685B (en) * | 2018-03-13 | 2020-11-03 | 烟台睿创微纳技术股份有限公司 | Graphene detector and preparation method thereof |
CN109309286B (en) * | 2018-08-23 | 2021-06-08 | 南京邮电大学 | Polarization-insensitive ultra-wideband terahertz wave absorber with multilayer structure |
CN110446415A (en) * | 2019-08-12 | 2019-11-12 | 中北大学 | A kind of novel Terahertz temperature control tunable multiple frequency Meta Materials wave absorbing device |
-
2020
- 2020-09-25 CN CN202011021578.7A patent/CN112134025B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007095830A (en) * | 2005-09-27 | 2007-04-12 | Nitta Ind Corp | Electromagnetic wave absorber |
CN104220965A (en) * | 2012-01-26 | 2014-12-17 | 柯尼卡美能达株式会社 | Touch-panel-equipped liquid crystal display device |
EP2677005A1 (en) * | 2012-06-21 | 2013-12-25 | Nitto Denko Corporation | Silicone resin composition, semi-cured material sheet, producing method of silicone cured material, light emitting diode device, and producing method thereof |
CN104936771A (en) * | 2013-01-22 | 2015-09-23 | 埃西勒国际通用光学公司 | Machine for coating an optical article with a predetermined coating composition and method for using the machine |
GB201403389D0 (en) * | 2014-02-26 | 2014-04-09 | Medical Wireless Sensing Ltd | Sensor |
CN103943967A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Ultrathin metallic resistance composite multi-frequency wave-absorbing material |
CN107554009A (en) * | 2016-07-01 | 2018-01-09 | 现代自动车株式会社 | Electromagnetic wave absorb |
Non-Patent Citations (3)
Title |
---|
A REVIEW PAPER ON TECHNIQUES AND DESIGN;M.Tech Student;《INTERNATIONAL JOURNAL OF SCIENTIFIC & ENGINEERING RESEARCH》;20151031;全文 * |
Design and Analyzed of Swastika-Shaped Frequency Selective Surface with Split Ring Resonator Metamaterial Absorber;Rahul Ateriya;《International Journal of Engineering Research & Technology (IJERT)》;20200731;第985-987页 * |
Simulation Study of Ultra Compact Polarization Independent Dual-Band Metamaterial Absorber;Manpreet Kaur;《2019 IEEE Indian Conference on Antennas and Propogation (InCAP)》;20200708;全文 * |
Also Published As
Publication number | Publication date |
---|---|
CN112134025A (en) | 2020-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20200321705A1 (en) | Controllable wave-absorbing metamaterial | |
CN104319486B (en) | Reflecting plate based on ultra-wide stopband frequency selective surface | |
CN107240778A (en) | Metamaterial antenna cover | |
CN103633446B (en) | Metamaterial wave absorber based on surface gradual-change structure and insensitive to broadband and polarization | |
CN103647152B (en) | Broadband polarization insensitive meta-material wave absorber | |
CN107275798A (en) | Super surface lens antenna | |
CN107221753B (en) | Multi-band left-handed material structure | |
CN207967319U (en) | A kind of broadband Meta Materials Terahertz wave absorbing device | |
CN106912192B (en) | Frequency-adjustable microwave absorber | |
CN104993226A (en) | Artificial magnetic conductor unit, artificial magnetic conductor structure and planar antenna | |
CN112134025B (en) | Multi-frequency metamaterial wave absorber | |
CN103715477A (en) | Microwave frequency band three-frequency-point polarization-independent 90-degree polarized revolver and application thereof | |
CN106654567A (en) | Miniature high-performance and high-band communication antenna cover of capacitive and sensitive surface coupling mechanism | |
CN111755833A (en) | Multi-band active metamaterial wave absorber | |
CN204732528U (en) | A kind of artificial magnetic conductor unit, artificial magnetic conductor structure and flat plane antenna | |
CN205194854U (en) | Super surperficial circular polarization ware of ultra wide band electromagnetism | |
CN107706539B (en) | Terahertz wave band single-resonator metamaterial multi-band wave absorber | |
CN106129549B (en) | A kind of air chamber frequency-selective surfaces structure | |
CN110471137B (en) | Dual-band infrared absorber | |
CN112134026B (en) | Multi-frequency metamaterial wave absorber with three-dimensional structure | |
CN112563759B (en) | Dual-frequency ultra-wideband metamaterial wave-absorbing unit and wave-absorbing body | |
CN205985278U (en) | Air chamber frequency selective surface structure | |
CN112332108B (en) | Metamaterial wave absorber | |
CN210347975U (en) | Dual-band infrared wave absorber | |
CN112134027B (en) | Metamaterial wave-absorbing device formed on basis of mutual intersection of three-dimensional resonance rings |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |