CN110048238A - A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials - Google Patents
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials Download PDFInfo
- Publication number
- CN110048238A CN110048238A CN201910379117.8A CN201910379117A CN110048238A CN 110048238 A CN110048238 A CN 110048238A CN 201910379117 A CN201910379117 A CN 201910379117A CN 110048238 A CN110048238 A CN 110048238A
- Authority
- CN
- China
- Prior art keywords
- resonant element
- layer
- absorbing device
- wave absorbing
- medium substrate
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
Abstract
The present invention discloses a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, its structure includes underlying metal reflecting plate, and the multilayered structure above metal plate, the multilayered structure includes the resonant element above three layers of medium substrate and every layer of medium substrate, it is the resonant element coated with high impedance surface above first layer and third layer medium substrate, is solid state plasma resonant element above second layer medium substrate.There are two types of working conditions for solid state plasma resonant element, motivate state and unenergized condition.The wave absorbing device has good absorption effect for TE polarized wave and TM polarized wave, high impedance surface is coated by the resonant element above first layer and third layer medium substrate, the ultra wide band that wave absorbing device may be implemented absorbs, and the excitation to different resonant elements is able to achieve by the excitation area that programming mode controls the resonant element that solid state plasma is constituted, to realize the tunable absorption of wave absorbing device.
Description
Technical field
The present invention relates to a kind of wave absorbing device, specifically a kind of tunable metamaterial based on a variety of dielectric materials inhales wave
Device belongs to radio communication, microwave device field.
Background technique
In recent years, the development of electromagnet Meta Materials causes great interest in scientific domain.Electromagnet Meta Materials
Artificial cellular construction by periodic size much smaller than operation wavelength (sub-wavelength) forms, can be with using equivalent medium theory
Its many peculiar physical characteristic is analyzed well, for example, negative index phenomenon, zero refractive index phenomenon, inverse doppler phenomenon etc.
Deng many of them phenomenon is that material cannot achieve at present in nature.These unique electromagnetism of electromagnet Meta Materials are special
Property make its improve antenna performance on have huge application potential and development space, and be widely used in traditional microwave device,
In nano-antenna, various kinds of sensors and optical device.
A kind of new structure type absorbing material i.e. Meta Materials wave absorbing device that fast development is got up in recent years, can be humorous by designing
Geometric dimension, permutation and combination and the composition material of vibration device micro-structure make the effective dielectric constant of Meta Materials and equivalent permeability exist
It is approximately uniform in a certain frequency range, to make the wave impedance and free space perfect matching of Meta Materials, reach perfect wave-absorbing effect.Phase
Than in traditional wave absorbing device, light weight, the thickness of electromagnetism Meta Materials wave absorbing device are thin, absorbability is strong, and its absorption band is adjustable, material
The electromagnetic parameter of material can design, and boundless application prospect is possessed in fields such as detection, imaging and electromagnetism stealths, however, passing
Meta Materials wave absorbing device in system meaning hardly results in tunable wide band absorption frequency spectrum.Plasma Meta Materials are as a kind of novel
Electromagnetism Meta Materials, be generally made of plasma medium periodic structure, can be with due to the good characteristic of plasma itself
The excitation state of artificial change plasma, and the frequency by changing plasma make the conductivity of plasma itself
Increase, shows the characteristic of metalloid.Plasma Meta Materials are applied to the design of wave absorbing device, by adjusting plasma
Frequency or excitation different resonance ranges change its physical characteristic, so as to obtain tunable absorption spectrum, design
Meta Materials wave absorbing device with novel characteristics.
It realizes that the ultra wide band of wave absorbing device absorbs using high impedance surface in the present invention, and is replaced using solid state plasma
Metal works, and realizes the tunable absorption of wave absorbing device.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of, and the tunable metamaterial based on a variety of dielectric materials inhales wave
Device coats high impedance surface by the partial resonance cell surface on medium substrate, thus realize that the ultra wide band of wave absorbing device absorbs,
And it is equipped with solid state plasma resonant element in the upper surface of medium substrate, solid-state etc. is controlled by programmable logic array
The excitation state of the excitation area of gas ions realizes the tunable absorption of wave absorbing device with this.
The present invention uses following technical scheme to solve above-mentioned technical problem:
The present invention provides a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, the reflection including being placed in bottom
Plate, the reflecting plate top are equipped with multilayered structure；The multilayered structure includes at least one layer of medium substrate, on the medium substrate
Side is equipped with resonant element；The multilayered structure includes the resonant element above three layers of medium substrate and each medium substrate, first layer
It is the resonant element coated with high impedance surface with third layer resonant element, second layer resonant element is solid state plasma resonance list
Member；The solid state plasma resonant element is motivated by connecting plasma excitation source, each plasma excitation source
On-off controlled by programming Control logic array.
As further technical solution of the present invention, with the circular resonant of rectangular fluting centered on first layer resonant element
Unit；Second layer resonant element includes inside and outside two layers, and outer layer is joined end to end by four shuttle shape resonant elements constitutes a round knot
Structure, internal layer are cross resonant element；Third layer resonant element by an annulus resonant element and ring center circular resonant list
Member is constituted.
Further, the first layer resonant element clips the pros that side length is 3mm by the circular patch that radius is 12mm
Shape patch obtains；The third layer resonant element, annulus resonant element internal diameter are 12mm, outer diameter 15mm, the circle at ring center
Resonant element radius is 6mm.
Further, the second layer resonant element, cross resonant element is by the identical oval resonance list of two sizes
Member is mutually perpendicular to arrange, an annulus resonant element is cased on the outside of oval resonant element interconnecting piece, oval resonant element
Long axis is 20mm, and short axle 5mm, the outer diameter of annulus resonant element is 5mm, internal diameter 4mm.
Further, the high impedance surface coated on first layer and third layer resonant element is conductive carbon paste, and first layer is led
The sheet resistance of electrical carbon slurry is 250ohm/sq, and the sheet resistance of third layer conductive carbon paste is 650ohm/sq.
Further, first layer medium substrate with a thickness of 0.6mm, second layer medium substrate with a thickness of 1.3mm, third
Layer medium substrate with a thickness of 1mm.
Further, the dielectric constant of the medium substrate is 3.5, loss angle tangent 0.0027.
Further, the solid state plasma resonant element is realized by the array that S-PIN unit forms.
Further, in microwave band, the bottom reflecting plate uses metallic reflection plate；The frequency more than Terahertz and light wave
Section, the bottom reflecting plate use multilayer dielectricity reflecting plate or artificial structure's array with reflection characteristic.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
(1) a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials of the present invention, by medium substrate
Partial resonance cell surface coats high impedance surface, to realize that the ultra wide band of wave absorbing device absorbs.
(2) a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials of the present invention, in the upper surface of medium substrate
Equipped with solid state plasma resonant element, swashing for the excitation area of solid state plasma is controlled by programmable logic array
State is encouraged, the tunable absorption of wave absorbing device is realized with this.
(3) a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials of the present invention passes through when electromagnetic wave incident
Three kinds of different excitation states are realized in programming, to obtain tunable absorption spectrum；It is determined by reasonable program setting sharp
It encourages region and excitation state can increase absorption peak of the wave absorbing device in specific frequency area and widen absorption band.
(4) present invention can realize the absorption to lower frequency electromagnetic wave under lesser physical size, have and apply model
It encloses wide, may be programmed regulation, the features such as flexible design, functional.
Detailed description of the invention
Fig. 1 is the first layer resonant element structural unit figure of wave absorbing device of the invention.
Fig. 2 is the second layer resonant element structural unit figure of wave absorbing device of the invention.
Fig. 3 is the shuttle shape structure partial schematic diagram of the second layer resonant element of wave absorbing device of the invention.
Fig. 4 is the cross resonant element structural unit figure of the second layer resonant element of wave absorbing device of the invention.
Fig. 5 is the third layer resonant element structural unit figure of wave absorbing device of the invention.
Fig. 6 is the first layer structural unit schematic diagram of wave absorbing device of the invention.
Fig. 7 is the second layer structural unit schematic diagram of wave absorbing device of the invention.
Fig. 8 is the third layer structural unit schematic diagram of wave absorbing device of the invention.
Fig. 9 is the side view of wave absorbing device of the invention.
Figure 10 is cell array (3 × 3) figure of wave absorbing device of the invention.
Figure 11 is the excitation control figure of the second layer difference resonant element of wave absorbing device of the invention.
The absorption curve of state one when Figure 12 is wave absorbing device electromagnetic wave vertical incidence of the invention.
The absorption curve of state two when Figure 13 is wave absorbing device electromagnetic wave vertical incidence of the invention.
The absorption curve of state three when Figure 14 is wave absorbing device electromagnetic wave vertical incidence of the invention.
Appended drawing reference is explained: 1- first layer resonant element, 2,8,9- second layer resonant element, 3- third layer resonant element,
4- first layer medium substrate, 5- second layer medium substrate, 6- third layer medium substrate, 7- metallic reflection plate, 10,11- solid-state etc.
Gas ions driving source.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing.
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, can be humorous by the part on medium substrate
Vibration cell surface coating conductive carbon paste achievees the purpose that widen wave absorbing device Absorber Bandwidth, to realize that the ultra wide band of wave absorbing device is inhaled
It receives, and by being equipped with solid state plasma resonant element in the upper surface of medium substrate, plasma resonance unit passes through company
It connects plasma excitation source to be motivated, the on-off in each plasma excitation source is controlled by programming Control logic array
System realizes the dynamic regulation to wave absorbing device absorbent properties.The Meta Materials wave absorbing device is formed by structural unit periodic arrangement.
There are two types of states for solid state plasma resonant element, are excitation state and unenergized condition respectively.Solid plasma
Body realizes that the resonant element that solid state plasma is constituted is real by excitation S-PIN cell array by the array that S-PIN unit forms
It is existing, and load bias voltage by its both ends and motivated.
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials that the present embodiment proposes, structure such as Fig. 1 is extremely
Shown in 11, by 7, the first to three layers of medium substrate 4,5,6 of bottom reflecting plate, the coating on first layer and third layer medium substrate is high
The resonant element 1,3 on surface is hindered, the solid state plasma resonant element 2 on second layer medium substrate forms.
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials of the invention has a following working condition: state one its
Structural unit includes underlying metal reflecting plate 7, medium substrate 4,5,6 and the resonant element 1,3 for coating high impedance surface；State two its
Structural unit includes underlying metal reflecting plate 7, medium substrate 4,5,6, coats the resonant element 1,3 of high impedance surface and is motivated
Solid state plasma resonant element 9；Its structural unit of state three includes underlying metal reflecting plate 7, medium substrate 4,5,6, coating
The resonant element 1,3 of high impedance surface and the solid state plasma resonant element 8,9 motivated.These working conditions can be by right
Programmable logic array in excitation control module is programmed to realize, to reach what regulation was made of solid state plasma
The purpose of resonant element working condition.
The high impedance surface of the coating is conductive carbon paste, can only coat certain some parts of resonant element, can also be right
Resonant element all coats, and the conductive carbon paste sheet resistance of every layer of resonant element coating is different, and the sheet resistance of first layer conductive carbon paste is
250ohm/sq, the sheet resistance of third layer conductive carbon paste are 650ohm/sq.
Resonant element is made of solid state plasma, and Drude model is selected to describe the dielectric constant of solid state plasma,
Plasma frequency is 2.9 × 1014Rad/s, collision frequency are 1.65 × 10131/S。
Resonant element 8,9 is motivated by plasma excitation source 10,11 respectively, as shown in figure 11.
A kind of production method of the tunable metamaterial wave absorbing device based on a variety of dielectric materials of the invention, the wave absorbing device for
Incident electromagnetic wave is that polarization is insensitive, and when electromagnetic wave vertical incidence, inhaling wave is due to being coated with high impedance surface, to have
Certain conductivity, and high impedance surface has certain resistance value, to realize that the ultra wide band of wave absorbing device absorbs, while by that can compile
The logic array of journey controls the excitation state of the excitation area of solid state plasma, and the tunable suction of wave absorbing device is realized with this
It receives.The assimilation effect of state one is as caused by the resonant element 1,3 of coating high impedance surface；The assimilation effect of state two is by applying
The resonant element that the resonant element 1,3 and solid state plasma 9 for covering high impedance surface are constituted is caused when being motivated；State three absorbs
Effect is that the resonant element being made of the resonant element 1,3 of coating high impedance surface and solid state plasma 8,9 causes when being motivated
's；Three compares, and the assimilation effect of the wave absorbing device state one is best.
The reflecting plate of the wave absorbing device, the reflecting plate used in different frequency range is different, such as in the available full gold of microwave band reflecting surface
Belong to plate, such as copper, aluminium；And in Terahertz and light wave with super band, multilayer dielectricity reflecting plate can be used in reflecting plate, and (such as photon is brilliant
Body) or artificial structure's array with reflection characteristic.
The invention is a kind of to can be realized ultra wide band absorption based on the tunable metamaterial wave absorbing device of a variety of dielectric materials
Meanwhile the tunable of absorption frequency is realized by way of programming.
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, by several resonant element periodic arrangements
At.There are three types of working conditions for this kind of wave absorbing device, its structural unit bottom of state one is complete metal plate, for being totally reflected, gold
Belong to is multilayer dielectric substrate and the resonant element 1,3 for coating high impedance surface above plate；Its structural unit bottom of state two is complete
Metal plate, be for being totally reflected, above metal plate multilayer dielectric substrate and coating high impedance surface resonant element 1,3 and by
The solid state plasma resonant element 9 of excitation；Its structural unit bottom of state three is complete metal plate, for being totally reflected, gold
Belong to all solid state plasmas for being the resonant element 1,3 of multilayer dielectric substrate and coating high impedance surface above plate and being motivated
Resonant element.
A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, first layer resonant element are by radius
The circular patch of 12mm is clipped the square patch that side length is 3mm and is obtained, and second layer resonant element is by four " leaf " shape resonance
Unit and cross resonant element composition, the cross resonant element is by the identical oval resonant element and one of two sizes
A annulus resonant element is constituted, and the long axis of oval resonant element is 20mm, and the outer diameter of short axle 5mm, annulus resonant element are
5mm, internal diameter 4mm.Third layer resonant element is made of the circular resonant unit of an annulus resonant element and ring center, annulus
Resonant element internal diameter is 12mm, and outer diameter 15mm, the circular resonant cell radius at ring center is 6mm.The related ginseng of the wave absorbing device
Number is as shown in table 1.
The relevant parameter of 1 wave absorbing device of table
| Parameter | h1 | h2 | h3 | w | w1 | e |
| Numerical value (mm) | 0.6 | 1.3 | 1 | 0.1 | 0.25 | 3 |
| Parameter | r0 | r1 | r2 | r3 | r4 | r5 |
| Numerical value (mm) | 12 | 6 | 12 | 15 | 4 | 5 |
| Parameter | r6 | a | b | d | m | |
| Numerical value (mm) | 1.5 | 20 | 5 | 15 | 11 | |
| Parameter | R1 | R2 | ||||
| Numerical value (Ω) | 250 | 650 |
It is absorption curve of the wave absorbing device in three kinds of work statuss, the wave absorbing device pair as shown in Figure 12, Figure 13 and Figure 14
It is that polarization is insensitive in incident electromagnetic wave, electromagnetic wave is incident along the direction-z when work.By absorptivity formula A (ω)=1-R
(ω)-T (ω), R (ω) indicate that reflectivity, T (ω) indicate transmissivity since bottom is complete metal reflecting plate, so T (ω)
=0, therefore A (ω)=1-R (ω).Figure 12 is absorption curve when solid state plasma resonant element 8,9 is unexcited, in frequency band
Reflectivity in 1.38-45GHz is lower than -10dB, and absorptivity is higher than 90%, and relative bandwidth reaches 188.09%, and has
Four higher absorption peaks, are located at 8.66GHz, 23.37GHz, 34.09GHz and 42.54GHz, and absorptivity is respectively
99.14%, 97.25%, 98.34% and 98.32%.Figure 13 is that absorption when solid state plasma resonant element 9 is motivated is bent
Line, reflectivity in frequency band 11.12-24.36GHz and frequency band 35.77-45GHz are lower than -10dB, and absorptivity is higher than 90%, and
And there are two higher absorption peaks for tool, are located at 13.69GHz and 22.34GHz, absorptivity is respectively 98.84% He
96.59%.Figure 14 is absorption curve when solid state plasma resonant element 8,9 is all motivated, in frequency band 11.38-
Reflectivity in 24.05GHz and frequency band 37.53-45GHz is lower than -10dB, and absorptivity is higher than 90%, and there are three higher for tool
Absorption peak, be located at 13.59GHz, 21.75GHz and 38.87GHz, absorptivity is respectively 98.36%, 95.37% and
96.83%.So we can control the excitation area for the resonant element that solid state plasma is constituted, selection by programming mode
Different plasma resonant element is motivated, to achieve the purpose that the dynamic regulation to wave absorbing device.
After by particular design (multilayered structure, high impedance surface, programming Control), the width of wave absorbing device is may be implemented in the present invention
With tunable absorption, main absorb all is the resonant element being made of the resonant element of coating high impedance surface and solid state plasma
It is caused.The ultra wide band absorption to electromagnetic wave can be realized under lesser physical size, the present invention has and has a wide range of application, can
The features such as programming regulation, flexible design, functional.
The basic principles, main features and advantages of the invention have been shown and described above.Those skilled in the art should
Understand, the present invention do not limited by above-mentioned specific embodiment, the description in above-mentioned specific embodiment and specification be intended merely into
One step illustrates the principle of the present invention, and under the premise of not departing from spirit of that invention range, the present invention also has various change and changes
Into these changes and improvements all fall within the protetion scope of the claimed invention.The scope of protection of present invention is by claim
Book and its equivalent thereof.
Claims (9)
1. a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials, it is characterised in that: the reflection including being placed in bottom
Plate, the reflecting plate top are equipped with multilayered structure；The multilayered structure includes at least one layer of medium substrate, on the medium substrate
Side is equipped with resonant element；The multilayered structure includes the resonant element above three layers of medium substrate and each medium substrate, first layer
It is the resonant element coated with high impedance surface with third layer resonant element, second layer resonant element is solid state plasma resonance list
Member；The solid state plasma resonant element is motivated by connecting plasma excitation source, each plasma excitation source
On-off controlled by programming Control logic array.
2. the tunable metamaterial wave absorbing device according to claim 1 based on a variety of dielectric materials, it is characterised in that: first
Circular resonant unit with rectangular fluting centered on layer resonant element；
Second layer resonant element includes inside and outside two layers, and outer layer is joined end to end by four shuttle shape resonant elements constitutes a round knot
Structure, internal layer are cross resonant element；
Third layer resonant element is made of the circular resonant unit of an annulus resonant element and ring center.
3. the tunable metamaterial wave absorbing device according to claim 2 based on a variety of dielectric materials, it is characterised in that: described
First layer resonant element is clipped the square patch that side length is 3mm by the circular patch that radius is 12mm and is obtained；The third layer
Resonant element, annulus resonant element internal diameter are 12mm, and outer diameter 15mm, the circular resonant cell radius at ring center is 6mm.
4. the tunable metamaterial wave absorbing device according to claim 2 based on a variety of dielectric materials, it is characterised in that: described
Second layer resonant element, cross resonant element is mutually perpendicular to arrange by the identical oval resonant element of two sizes, in ellipse
It is cased with an annulus resonant element on the outside of resonant element interconnecting piece, the long axis of oval resonant element is 20mm, short axle 5mm,
The outer diameter of annulus resonant element is 5mm, internal diameter 4mm.
5. the tunable metamaterial wave absorbing device according to claim 1 based on a variety of dielectric materials, it is characterised in that: described
The high impedance surface coated on first layer and third layer resonant element is conductive carbon paste, and the sheet resistance of first layer conductive carbon paste is
250ohm/sq, the sheet resistance of third layer conductive carbon paste are 650ohm/sq.
6. the tunable metamaterial wave absorbing device according to claim 1 based on a variety of dielectric materials, it is characterised in that: described
First layer medium substrate with a thickness of 0.6mm, second layer medium substrate with a thickness of 1.3mm, the thickness of third layer medium substrate
For 1mm.
7. the tunable metamaterial wave absorbing device according to claim 1 based on a variety of dielectric materials, it is characterised in that: described
The dielectric constant of medium substrate is 3.5, loss angle tangent 0.0027.
8. a kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials according to claim 2, it is characterised in that:
The solid state plasma resonant element is realized by the array that S-PIN unit forms.
9. the tunable metamaterial wave absorbing device according to claim 1 based on a variety of dielectric materials, it is characterised in that: micro-
Wave wave band, the bottom reflecting plate use metallic reflection plate；In Terahertz and light wave with super band, the bottom reflecting plate is used
Multilayer dielectricity reflecting plate or artificial structure's array with reflection characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379117.8A CN110048238A (en) | 2019-05-08 | 2019-05-08 | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379117.8A CN110048238A (en) | 2019-05-08 | 2019-05-08 | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110048238A true CN110048238A (en) | 2019-07-23 |
Family
ID=67281119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910379117.8A Pending CN110048238A (en) | 2019-05-08 | 2019-05-08 | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110048238A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797666A (en) * | 2019-11-05 | 2020-02-14 | 南京邮电大学 | Wave absorber regulated and controlled by gravity field and frequency selection function reconfigurable device |
| CN111736404A (en) * | 2020-06-22 | 2020-10-02 | 清华大学 | Flower-shaped air hole super-structure material and entangled photon pair generation system thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001230625A (en) * | 2000-02-15 | 2001-08-24 | Mitsubishi Electric Corp | Reflection reducing device |
| US20100271253A1 (en) * | 2009-04-24 | 2010-10-28 | Lockheed Martin Corporation | Cnt-based signature control material |
| US20170085004A1 (en) * | 2011-05-11 | 2017-03-23 | Vincent J. Digregory | Patterned Conductive Ink Film Absorber for a Foldable Transportable Shelter |
| CN106877005A (en) * | 2017-01-13 | 2017-06-20 | 中南大学 | Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing |
| CN206313139U (en) * | 2016-12-15 | 2017-07-07 | 南京邮电大学 | The wave absorbing device of the bandwidth expanded based on high refractive index medium coating high impedance surface |
| CN107978870A (en) * | 2017-11-13 | 2018-05-01 | 南京邮电大学 | Based on the regulatable arrowband wave absorbing device of plasma Meta Materials |
-
2019
- 2019-05-08 CN CN201910379117.8A patent/CN110048238A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001230625A (en) * | 2000-02-15 | 2001-08-24 | Mitsubishi Electric Corp | Reflection reducing device |
| US20100271253A1 (en) * | 2009-04-24 | 2010-10-28 | Lockheed Martin Corporation | Cnt-based signature control material |
| US20170085004A1 (en) * | 2011-05-11 | 2017-03-23 | Vincent J. Digregory | Patterned Conductive Ink Film Absorber for a Foldable Transportable Shelter |
| CN206313139U (en) * | 2016-12-15 | 2017-07-07 | 南京邮电大学 | The wave absorbing device of the bandwidth expanded based on high refractive index medium coating high impedance surface |
| CN106877005A (en) * | 2017-01-13 | 2017-06-20 | 中南大学 | Ripple foam radar absorbing is inhaled in a kind of Meta Materials enhancing |
| CN107978870A (en) * | 2017-11-13 | 2018-05-01 | 南京邮电大学 | Based on the regulatable arrowband wave absorbing device of plasma Meta Materials |
Non-Patent Citations (1)
| Title |
|---|
| YAKEEN TAYDE ET AL.: "Polarization-Insensitive Broadband Multilayered Absorber Using Screen Printed Patterns of Resistive Ink", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797666A (en) * | 2019-11-05 | 2020-02-14 | 南京邮电大学 | Wave absorber regulated and controlled by gravity field and frequency selection function reconfigurable device |
| CN111736404A (en) * | 2020-06-22 | 2020-10-02 | 清华大学 | Flower-shaped air hole super-structure material and entangled photon pair generation system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sheokand et al. | Transparent broadband metamaterial absorber based on resistive films | |
| Assimonis et al. | Polarization insensitive, wide-angle, ultra-wideband, flexible, resistively loaded, electromagnetic metamaterial absorber using conventional inkjet-printing technology | |
| US8890101B2 (en) | Electromagnetic wave absorbing device | |
| Zhang et al. | A broadband tunable frequency selective surface absorber for oblique incidence applications | |
| He et al. | Design of an adjustable polarization-independent and wideband electromagnetic absorber | |
| CN107689488B (en) | Frequency selection surface structure applied to ultra-wideband antenna | |
| Kong et al. | Broadband and conformal metamaterial absorber | |
| CN110137690A (en) | A kind of Terahertz frequency range broadband Meta Materials wave absorbing device | |
| CN110212308A (en) | Ultra wide band wave absorbing device that a kind of gravitational field based on liquid metal is tunable | |
| CN106299628B (en) | Antenna and wireless router | |
| CN110048238A (en) | A kind of tunable metamaterial wave absorbing device based on a variety of dielectric materials | |
| CN108493623A (en) | Sub-wavelength stratiform three-dimensional broadband absorbent structure based on loss-type frequency-selective surfaces | |
| He et al. | Ultrawide bandwidth and large-angle electromagnetic wave absorption based on triple-nested helix metamaterial absorbers | |
| Xiao et al. | Optically transparent broadband and polarization insensitive microwave metamaterial absorber | |
| CN109088171B (en) | Wave absorber with broadened bandwidth based on cavity resonance and lumped element | |
| Deng et al. | Enhanced broadband absorption with a twisted multilayer metal–dielectric stacking metamaterial | |
| Yu et al. | A highly selective rasorber with ultraminiaturized unit based on interdigitated 2.5-D parallel resonator | |
| Lan et al. | Design of miniaturized wideband microwave absorber loaded with lumped resistance | |
| Majeed et al. | Multiband polarization-insensitive cartwheel metamaterial absorber | |
| CN101518964B (en) | Polarization independent high performance adjustable compound microwave absorption material | |
| Shen et al. | Tailoring multi-order absorptions of a Salisbury screen based on dispersion engineering of spoof surface plasmon polariton | |
| Luo et al. | Thin and broadband Salisbury screen absorber using Minkowski fractal structure | |
| CN108767482A (en) | A kind of frequency-selective surfaces structure applied to ultra-wideband antenna | |
| Lu et al. | Design of Ultra-wideband and Transparent Absorber based on Resistive Films. | |
| CN113471714A (en) | Ultra-wideband fractal medium resonance wave absorber based on 3D printing and method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190723 |
|
| RJ01 | Rejection of invention patent application after publication |