CN106785476A - A kind of Meta Materials wave-absorber - Google Patents
A kind of Meta Materials wave-absorber Download PDFInfo
- Publication number
- CN106785476A CN106785476A CN201710110486.8A CN201710110486A CN106785476A CN 106785476 A CN106785476 A CN 106785476A CN 201710110486 A CN201710110486 A CN 201710110486A CN 106785476 A CN106785476 A CN 106785476A
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- China
- Prior art keywords
- meta materials
- absorber
- becket
- wave
- materials wave
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Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention discloses a kind of Meta Materials wave-absorber, including the continuous multiple suction ripple units for setting, described each suction ripple unit includes medium substrate (3) and is close to the metal ground plate (4) of medium substrate (3) lower surface, the becket (1) of opening is pasted with the upper surface of the medium substrate (3), lumped resistance (2) is provided with the opening of the becket (1), lumped resistance (2) two ends are connected with the becket (1) of opening both sides respectively.Meta Materials wave-absorber of the invention, absorptivity is high, work bandwidth band.
Description
Technical field
The invention belongs to Meta Materials technical field, particularly a kind of absorptivity is high, work bandwidth band Meta Materials wave-absorber.
Background technology
Electromagnetism Meta Materials are due to focus that unusual electromagnetic property is always the research fields such as physics and materialogy.Since
Electromagnetism Meta Materials can be realized after negative dielectric constant and negative magnetic conductivity simultaneously, when electromagnetism Meta Materials have welcome fast-developing
Phase.Between short decades, the theoretical research of Meta Materials reaches its maturity, and using increasingly wider, covers military, industry and life etc.
Every field, wherein Meta Materials wave-absorber have obtained extensive concern as Meta Materials in an application for inhaling ripple neighborhood.
Traditional Meta Materials wave-absorber can be divided into mode of resonance wave-absorber and broadband wave-absorber, the suction ripple machine of mode of resonance wave-absorber
Reason mainly realizes the absorption to electromagnetic wave, therefore absorption band relative narrower by EMR electromagnetic resonance, although former by resonance
Reason can also realize the Meta Materials wave-absorber of double frequency and multifrequency, but realize that broadband wave-absorber still has certain difficulty.
In the last few years, people had done substantial amounts of research at the broadband aspect of Meta Materials wave-absorber.Conventional method has：Unit
Combined method, realizes the broadband wave-absorber of individual layer；Coherent phase elimination based on multilayer dielectricity, realizes multilayer absorber；May be used also
By loading the method that lamped element strengthens loss, to realize that ripple is inhaled in broadband.
But, the technical problem that above-mentioned Meta Materials wave-absorber is present is：Absorptivity is not high enough, the inadequate band of work bandwidth, special
It is not that absorptivity is lower under large angle incidence ripple.
The content of the invention
It is an object of the invention to provide a kind of Meta Materials wave-absorber, absorptivity is high, work bandwidth band, particularly wide-angle
Also there is absorptivity higher under incidence wave.
The technical solution for realizing the object of the invention is：
A kind of Meta Materials wave-absorber, including the continuous multiple suction ripple units for setting, described each suction ripple unit include medium
Substrate and the metal ground plate for being close to medium substrate lower surface, the metal of opening is pasted with the upper surface of the medium substrate
Ring, is provided with lumped resistance at the opening of the becket, becket of the lumped resistance two ends respectively with opening both sides is connected.
Compared with prior art, its remarkable advantage is the present invention：
1st, absorptivity is high：The present invention can reach absorptivity higher in suction wavestrip, and keep stabilization, and for
The incidence wave of wide-angle can still keep high-absorbility；
2nd, working band is wide：Of the invention with respect to inhaling, wavestrip is wide to reach 47.3%, and working band is wide.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the suction ripple unit three-dimensional structural representation of Meta Materials wave-absorber of the present invention.
The front view of Fig. 2 Fig. 1.
The upward view of Fig. 3 Fig. 1.
Fig. 4 is the S11 Parameter Maps emulated to Meta Materials wave-absorber of the present invention using CST.
Fig. 5 is the normal incident absorption coefficient simulation result figure of Meta Materials wave-absorber of the present invention.
Fig. 6 is the suction ripple rate simulation result figure in the case of Meta Materials wave-absorber wide-angle of the present invention.
Specific embodiment
Meta Materials wave-absorber of the present invention is infinite period structure, including the multiple suction ripple units for continuously setting.
It is described each inhale ripple unit as shown in Figure 1, 2, 3, including medium substrate 3 and be close to the lower surface of medium substrate 3
Metal ground plate 4, the becket 1 of opening is pasted with the upper surface of the medium substrate 3, is set at the opening of the becket 1
There is lumped resistance 2, the two ends of the lumped resistance 2 are connected with the becket 1 of opening both sides respectively.
Becket (1) periphery is square, and interior sky is circle, and square is Chong Die with circular geometric center.
The becket (1) is provided with two on center of circle symmetrical openings, is opened in interior empty circular square most from periphery
On near side.
Described to use lossy FR-4 medium substrates, its dielectric constant is ε=4.3, and loss angle tangent is td=
0.025。
The underlying metal base plate 4 and top-level metallic ring 1 all use metallic copper, and its electrical conductivity is σ=5.8 × 107S/m。
Used as embodiment, each dimensional parameters of three-decker of each unit are as follows：Lattice parameter P=14.2mm, gold
Category ring length of side L=9.5mm, inner arc radius R=3.8mm, A/F w=1.7mm, resistance the r=270 Ω, FR-4 of loading
The copper film thickness dh=0.035mm of the thickness d=3mm of substrate, top layer and bottom.A/F be chosen to be 1.7mm just and
The Chip-R length of 0603 encapsulation matches, convenient production and processing.
Fig. 4 is emulate the S11 Parameter Maps for obtaining to the present invention using simulation software.
Fig. 5 is the absorbance curves of the invention by S11 parameter calculating and plottings.Will by the lumped parameter resistance for loading
EMR electromagnetic resonance is converted into the insensitive circuit resonance of frequency, and ohmic loss by resistance effectively dissipates energy absorption
Fall, so as to widen the bandwidth of operation of wave-absorber in 8.4-13.6GHz frequency ranges, absorptivity reaches 90%, relative suction wavestrip is a width of
47.3%, in 10.3-13.1GHz frequency ranges, absorptivity reaches 99%, relative to inhale wavestrip a width of 23.9%.
Fig. 6 is absorbance curves of the present invention in the case of wide-angle.As can be seen from the figure when incidence angle is at 45 degree
Within when, 90% to inhale wavestrip change wide little, but inhales wavestrip as the increase of incidence angle has obvious blue-shifted phenomenon, this be because
It is that the surface current that incident magnetic has been encouraged diminishes, and current path shortens so that resonance point as incident electromagnetic wave angle increases
Toward high-frequency mobile, macro manifestations are blue shift.Generally speaking, wave-absorber has good suction ripple for 45 degree of interior oblique incidence electromagnetic waves
Effect.
Meta Materials wave-absorber working frequency range of the invention covers X-band substantially, in radio communication, antenna, stealthy and radar
The aspects such as detection, have huge application value in particular for the detection and stealthy aspect of X-band radar.
Claims (4)
1. a kind of Meta Materials wave-absorber, including the continuous multiple suction ripple units for setting, it is characterised in that：
It is described each inhale ripple unit and include medium substrate (3) and be close to the metal ground plate (4) of medium substrate (3) lower surface,
The becket (1) of opening is pasted with the upper surface of the medium substrate (3), lump is provided with the opening of the becket (1)
Resistance (2), lumped resistance (2) two ends are connected with the becket (1) of opening both sides respectively.
2. Meta Materials wave-absorber according to claim 1, it is characterised in that：Becket (1) periphery is square, interior
Sky is circle, and square is Chong Die with circular geometric center.
3. Meta Materials wave-absorber according to claim 2, it is characterised in that：The becket (1) be provided with two on
Center of circle symmetrical openings, are opened on the interior empty circular side nearest from peripheral square.
4. Meta Materials wave-absorber according to claim 1, it is characterised in that：It is described to use lossy FR-4 medium bases
Plate, its dielectric constant is ε=4.3, and loss angle tangent is td=0.025.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110486.8A CN106785476B (en) | 2017-02-28 | 2017-02-28 | Metamaterial wave absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110486.8A CN106785476B (en) | 2017-02-28 | 2017-02-28 | Metamaterial wave absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106785476A true CN106785476A (en) | 2017-05-31 |
| CN106785476B CN106785476B (en) | 2019-12-27 |
Family
ID=58959435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710110486.8A Expired - Fee Related CN106785476B (en) | 2017-02-28 | 2017-02-28 | Metamaterial wave absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106785476B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257034A (en) * | 2017-07-18 | 2017-10-17 | 东南大学 | Low-frequency range Meta Materials wave absorbing device based on high magnetic permeability |
| CN109802242A (en) * | 2019-03-05 | 2019-05-24 | 南京理工大学 | Super surface lens |
| CN112615165A (en) * | 2020-12-06 | 2021-04-06 | 中国人民解放军空军工程大学 | Multi-mode resistance-based multi-layer broadband metamaterial wave absorber and design method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682013A (en) * | 2015-02-09 | 2015-06-03 | 北京理工大学 | Wide-angle polarization-insensitive low RCS meta-material wave absorber |
| US20160190676A1 (en) * | 2013-08-27 | 2016-06-30 | Nec Platforms, Ltd. | Antenna and wireless communication apparatus |
| CN105958208A (en) * | 2016-05-27 | 2016-09-21 | 西安电子科技大学 | Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change |
-
2017
- 2017-02-28 CN CN201710110486.8A patent/CN106785476B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160190676A1 (en) * | 2013-08-27 | 2016-06-30 | Nec Platforms, Ltd. | Antenna and wireless communication apparatus |
| CN104682013A (en) * | 2015-02-09 | 2015-06-03 | 北京理工大学 | Wide-angle polarization-insensitive low RCS meta-material wave absorber |
| CN105958208A (en) * | 2016-05-27 | 2016-09-21 | 西安电子科技大学 | Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change |
Non-Patent Citations (1)
| Title |
|---|
| 刘凌云等: "基于集总电阻的宽频带超材料吸波器研究", 《微波学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257034A (en) * | 2017-07-18 | 2017-10-17 | 东南大学 | Low-frequency range Meta Materials wave absorbing device based on high magnetic permeability |
| CN109802242A (en) * | 2019-03-05 | 2019-05-24 | 南京理工大学 | Super surface lens |
| CN112615165A (en) * | 2020-12-06 | 2021-04-06 | 中国人民解放军空军工程大学 | Multi-mode resistance-based multi-layer broadband metamaterial wave absorber and design method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106785476B (en) | 2019-12-27 |
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Granted publication date: 20191227 |