CN105552565A - Polarized insensitive metamaterial microwave energy acquirer - Google Patents
Polarized insensitive metamaterial microwave energy acquirer Download PDFInfo
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- CN105552565A CN105552565A CN201511018685.3A CN201511018685A CN105552565A CN 105552565 A CN105552565 A CN 105552565A CN 201511018685 A CN201511018685 A CN 201511018685A CN 105552565 A CN105552565 A CN 105552565A
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- inner ring
- metal unit
- coating metal
- microwave energy
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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
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/004—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective using superconducting materials or magnetised substrates
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a polarized insensitive metamaterial microwave energy acquirer. The polarized insensitive metamaterial microwave energy acquirer is characterized by comprising a surface layer metal film, chip resistors, an intermediate dielectric layer and a bottom layer metal film, wherein the surface layer metal film consists of a planar array formed by at least one uniformly-arranged surface layer metal unit; the chip resistors are embedded on the corresponding surface layer metal units; the intermediate dielectric layer is fitted with the surface layer metal film; the bottom layer metal film consists of at least a planar array formed by at least one uniformly-arranged bottom layer metal units; the bottom layer metal film is in one-to-one correspondence with the surface layer metal film, and is fitted with the intermediate dielectric layer, wherein each surface layer metal unit adopts a square annular structure, and four inner ring jagged lines are arranged in an inner ring and are symmetrically arranged in the central positions of the four edges of the inner ring; and each bottom layer metal film adopts a square annular structure.
Description
Technical field
The present invention relates to microwave Meta Materials field, particularly a kind of Meta Materials microwave energy grabber of the polarization insensitive based on material.
Background technology
Electromagnetic wave energy is caught, to collect be emerging sophisticated technology, is also a new trend of wireless energy supply.At present along with the development of ultra low power transducer, micro radio wearable device and implanted electronic equipment, the defect of existing battery and active energy supplying system is also more and more obvious.Also the theory of environmental protection is embodied by collecting electromagnetic wave in environment such as microwave, radio-frequency (RF) energy energy supply.Existing microwave, radio-frequency (RF) energy gathering-device mostly utilize traditional antenna as gathering-device, and the present invention's utilize Meta Materials to catch energy that electromagnetic wave energy ratio traditional antenna collects is larger and have superposability, namely the energy of each unit collection is stackable, has more practicality.Be different from the design of previous meta-material absorber, this Meta Materials is realized by the resistance of institute's load instead of pass through dielectric material to catching, collecting of energy.Therefore, this kind of novel Meta Materials is caught, gatherer can represent huge application prospect in fields such as wireless charging, space solar power, radiofrequency signal collections.
Meta Materials is a kind of artificial super mediator composite, and the working frequency range of Meta Materials absorbent structure depends on the size of metamaterial structure geometric scale, and for identical shape, the geometric scale of change structure, its centre frequency and working frequency range all can change.Utilize the designability of its electromagnetic parameter and Modulatory character to obtain better assimilation effect.Early stage people study and mainly concentrate in left-handed materials, it be a kind of can engineer, meet the electromagnetic material of specific effective dielectric constant and magnetic permeability requirement.Meta Materials can realize the irrealizable characteristic of conventional material, such as invisible clothes, super lens etc., can also improve the performance of existing equipment, has extremely important application in fields such as electromagnetism stealth, communication system and imaging techniques.
2012, the people such as the O.M.Ramahi of Canadian University of Waterloo (CA) Waterloo, Ontario, N2L3GI Canada proposed the ring structure Meta Materials that cracks loading lumped resistance first, and have carried out numerical simulation, emulate the energy capture efficiency obtained and reach 50% near 6GHz.The cascade form Meta Materials grabber of the proposition such as Duke Univ USA A.M.Hawkes subsequently, near 900MHz, energy capture efficiency simulation value is 65%, and has carried out experiment test, and its test value reaches 36.8%.Then, the T.S.Almoneef of Canadian University of Waterloo (CA) Waterloo, Ontario, N2L3GI Canada propose three-dimensional stacked form Meta Materials catch electromagnetic efficiency theory value can close to 100%.Their seminar proposes again flower type structure and square ring structure microwave Meta Materials, and has carried out experimental verification, and it catches microwave energy efficiency experiment value can reach 93%.Along with going deep into further of research, by the design of metamaterial microstructure unit, electromagnetic wave energy capture rate is promoted significantly.However, the electromagnetic wave energy grabber based on Meta Materials of current design is to electromagnetic Polarization-Sensitive.That is the Meta Materials designed only has capture ability to the electromagnetic wave energy of particular polarization, and when incident electromagnetic wave polarization direction changes, its effect just weakens or disappears.
Summary of the invention
The present invention carries out to solve the problem, and object is to provide a kind of insensitive to polarization of electromagnetic wave, the Meta Materials microwave energy grabber that efficiency is high.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, has such feature, comprising: coating metal film, is evenly arranged into planar array forms by least one coating metal unit; Chip-R, is embedded on coating metal unit; Middle dielectric layer, fits with coating metal film; And underlying metal film, be evenly arranged into planar array by least one underlying metal unit to form, with coating metal film one_to_one corresponding, fit with middle dielectric layer, wherein, coating metal unit is square loop configuration, and inner ring has four inner ring jaggies, be symmetricly set on the center of the four edges of inner ring respectively, underlying metal film is square loop configuration.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, and coating metal unit is fixed by the via hole and underlying metal unit being arranged on edge.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also have such feature: wherein, coating metal unit, the length of side is respectively length of side p
xwith hem width p
y, underlying metal unit, the length of side is respectively length of side p
xwith hem width p
y, the inner ring length of side of coating metal unit is inner ring length of side l, and the inner ring hem width of coating metal unit is that top layer inner ring broadens w, and the width of inner ring jaggies is sawtooth live width w
0, the width between two relative inner ring jaggies is gap width g, and the radius of middle dielectric layer via hole is radius r
0, the thickness of middle dielectric layer is dielectric thickness t
s, the inner ring length of side of underlying metal unit is bottom inner ring length of side l
l, the inner ring hem width of underlying metal unit is ring structure hem width w in bottom
1, the thickness of coating metal film is thickness t
mthe thickness of underlying metal film is film thickness t
m.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, length of side p
xwith hem width p
yscope be 2mm ~ 40mm, the scope of top layer inner ring length of side l is 1mm ~ 30mm, and the scope of top layer inner ring hem width w is 0.4mm ~ 8mm, sawtooth live width w
0scope be the scope of 0.1mm ~ 4mm, gap width g be 0.3mm ~ 10mm, radius r
0scope be 0.05mm ~ 2mm, dielectric thickness t
sscope be 1mm ~ 15mm, bottom inner ring length of side l
lscope be 2mm ~ 40mm, bottom inner ring hem width w
1scope be 1mm ~ 15mm, film thickness t
mscope be 0.01mm ~ 0.1mm.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, and middle dielectric layer is dielectric material, and the scope of its relative dielectric constant real part is 1 ~ 15.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, and the magnitude range of Chip-R is 50 ohm ~ 3000 ohm.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, and Chip-R is embedded in the place of cracking of coating metal unit.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also have such feature: wherein, coating metal film is covered on middle dielectric layer by printed circuit board technology.
The Meta Materials microwave energy grabber of polarization insensitive provided by the invention, also has such feature: wherein, and coating metal unit and underlying metal unit are the periodic structure with strict geometrical symmetry.
Invention effect
According to the Meta Materials microwave energy grabber of polarization insensitive involved in the present invention, the energy capture device close to the polarization insensitive of perfect microwave capture ability can be realized, can catch, the radio-frequency range of collecting in surrounding environment, the electromagnetic energy of radar, be expected in radio energy charging, efficient radio can transmit and the field such as stealthy generation is applied widely; The electromagnetic energy grabber of design has wide using value by environmental science, information, national security and basic physics research field, will bring huge social economic effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's Meta Materials microwave energy grabber of polarization insensitive in an embodiment;
Fig. 2 is the front view of the present invention's coating metal unit in an embodiment;
Fig. 3 is the structural perspective of the present invention's coating metal unit in an embodiment; And
Fig. 4 is the present invention's curve chart of electromagnetic wave energy absorptivity of obtaining of emulation experiment in an embodiment.
Embodiment
Be explained in detail referring to the Meta Materials microwave energy grabber of drawings and Examples to polarization insensitive involved in the present invention.
Embodiment
Fig. 1 is the structural representation of the present invention's Meta Materials microwave energy grabber of polarization insensitive in an embodiment.
Fig. 2 is the front view of the present invention's coating metal unit in an embodiment.
Fig. 3 is the structural perspective of the present invention's coating metal unit in an embodiment.
As shown in Figure 1, Figure 2 and Figure 3, the Meta Materials microwave energy grabber of polarization insensitive has: coating metal film 1, underlying metal film 2, middle dielectric layer 3 and Chip-R 4.
Coating metal film 1 adopts copper film, is evenly arranged into planar array forms by least one coating metal unit 1-1.The quantity of the present embodiment mesexine metal unit 1-1 is 20.
Underlying metal film 2 adopts copper film, is evenly arranged into planar array forms by least one underlying metal unit 2-1, with coating metal film 1 one_to_one corresponding.The quantity of the present embodiment mesexine metal unit 1-1 is 20.
The thickness of coating metal film is film thickness t
m, the thickness of underlying metal film is film thickness t
m.Film thickness t
mscope be 0.01mm ~ 0.1mm.
Thickness t in the present embodiment
mfor 0.035mm.
Coating metal unit 1-1 and underlying metal unit 2-1 is the periodic structure with strict geometrical symmetry, as square, circular, rhombus, and triangle.Coating metal unit 1-1 in this enforcement and underlying metal unit 2-1 is square.
Coating metal unit 1-1 is square loop configuration, and inner ring has four in inner ring jaggies 1-1-2, is symmetricly set on the center of the four edges of inner ring respectively.The length of side of coating metal unit 1-1 is length of side p
x, hem width is hem width p
y, the inner ring length of side of the square loop configuration of coating metal unit 1-1 is top layer inner ring length of side l, and top layer inner ring hem width is w, and inner ring jaggies 1-1-2 is wide is sawtooth live width w
0, gap width is gap width g, and crossing pore radius is footpath r
0.
Length of side p
xwith hem width p
yscope be 2mm ~ 40mm, the scope of top layer inner ring length of side l is 1mm ~ 30mm, and the scope of top layer inner ring hem width w is 0.4mm ~ 8mm, sawtooth live width w
0scope be the scope of 0.1mm ~ 4mm, gap width g be 0.3mm ~ 10mm, radius r
0scope be 0.05mm ~ 2mm.
In the present embodiment, length of side p
xfor 7mm, hem width p
yfor 7mm, top layer inner ring length of side l is 4.1mm, and top layer inner ring hem width w is 1.2mm, sawtooth live width w
0for 0.4mm, gap width g is 1.6mm, radius r
0for 0.2mm.
Underlying metal unit 2-1 is square loop configuration.The length of side of underlying metal unit 2-1 is length of side p
x, hem width is hem width p
y, the inner ring length of side is bottom inner ring length of side l
l, inner ring hem width is ring structure hem width w in bottom
1.
Length of side p
xwith hem width p
yscope be 2mm ~ 40mm, bottom inner ring length of side l
lscope be 2mm ~ 40mm, bottom inner ring hem width w
1scope be 1mm ~ 15mm.
Coating metal unit 1-1 is fixed by the via hole 1-1-1 and underlying metal unit 2-1 being arranged on edge.
In the present embodiment, length of side p
xfor length of side p
xfor 7mm, hem width p
yfor 7mm, bottom inner ring length of side l
lfor 4.1mm, bottom inner ring hem width w
1for 2.5mm.
Coating metal film 1 printed circuit board technology is covered on middle dielectric layer 3.Underlying metal film 2 is covered under middle dielectric layer 3.
Middle dielectric layer 3 is dielectric material, and the scope of its relative dielectric constant real part is 1 ~ 15.Middle dielectric layer 3 in the present embodiment adopts low-loss Rogers sheet material RogersTMM10i (lossy), and real part of permittivity is 9.9, and loss angle is 0.002.
The dielectric thickness of middle dielectric layer 3 is dielectric thickness t
s.Dielectric thickness t
sscope be 1mm ~ 15mm.Dielectric thickness t in the present embodiment
sfor 1.6mm.
Chip-R 4 is embedded in the place of cracking of coating metal unit 1-1, and the magnitude range of Chip-R is 50 ohm ~ 3000 ohm.In the present embodiment, the size of Chip-R is 300 ohm.
Fig. 4 is the present invention's curve chart of electromagnetic wave energy absorptivity of obtaining of emulation experiment in an embodiment.
As shown in Figure 4, the Meta Materials microwave energy grabber of above-mentioned polarization insensitive is through Fdtd Method (FDTD) algorithm numerical simulation in vertical incidence TEM ripple situation, and its efficiency of catching surrounding space electromagnetic energy can characterize with absorptivity frequency spectrum.Absorptivity computing formula with frequency change is A=1-|S11|
2-| S21|
2, in formula | S11| is the reflection coefficient amplitude with frequency change, | S21| is the transmission coefficient amplitude with frequency change.By structural parameters and the material of the Meta Materials microwave energy grabber of reasonably optimizing design polarization insensitive, make its impedance of characteristic frequency in setting and the matches impedances (namely effective dielectric constant is equal with effective permeability) of free space, now, reflected hardly and transmission, reflectivity R=|S11| because spatial electromagnetic ripple enters metamaterial structure completely
2with transmissivity T=|S21|
2close to zero; Such electromagnetic energy is completely restricted at this device inside, thus realizes the perfection absorption being close to 100%.The simulation experiment result shows, the Meta Materials microwave energy grabber absorptivity of this polarization insensitive at 2.9GHz close to 100%.In addition, because the metamaterial structure of design has strict geometrical symmetry, therefore it is polarization insensitive to electromagnetic wave, and that is incident random polarization microwave effectively can be caught, collected, and efficiency is close to 100%.
The effect of embodiment and effect
The Meta Materials microwave energy grabber of polarization insensitive involved by the present embodiment, the energy capture device close to the polarization insensitive of perfect microwave capture ability can be realized, can catch, the radio-frequency range of collecting in surrounding environment, the electromagnetic energy of radar, be expected in radio energy charging, efficient wireless energy transfer and the field such as stealthy produce applies widely; The electromagnetic energy grabber of design has wide using value by environmental science, information, national security and basic physics research field, will bring huge social economic effect.
Above-mentioned execution mode is preferred case of the present invention, is not used for limiting the scope of the invention.
Claims (9)
1. a Meta Materials microwave energy grabber for polarization insensitive, is characterized in that, comprising:
Coating metal film, is evenly arranged into planar array by least one coating metal unit and forms;
Chip-R, is embedded on described coating metal unit;
Middle dielectric layer, fits with described coating metal film; And
Underlying metal film, is evenly arranged into planar array by least one underlying metal unit and forms, and with described coating metal film one_to_one corresponding, fits with described middle dielectric layer,
Wherein, described coating metal unit is square loop configuration, and inner ring has four inner ring jaggies, is symmetricly set on the center of the four edges of described inner ring respectively,
Described underlying metal film is square loop configuration.
2. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described coating metal unit is fixed by the via hole and described underlying metal unit being arranged on edge.
3. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described coating metal unit, the length of side is respectively length of side p
xwith hem width p
y
Described underlying metal unit, the length of side is respectively described length of side p
xwith described hem width p
y,
The inner ring length of side of described coating metal unit is inner ring length of side l,
The inner ring hem width of described coating metal unit is top layer inner ring hem width w,
The width of described inner ring jaggies is sawtooth live width w
0,
Width between described two inner ring jaggies is relatively gap width g,
The radius of described via hole is radius r
0,
The thickness of described middle dielectric layer is dielectric thickness t
s,
The inner ring length of side of described underlying metal unit is bottom inner ring length of side l
l,
The inner ring hem width of described underlying metal unit is ring structure hem width w in bottom
1,
The thickness of described coating metal film is film thickness t
m
The thickness of described underlying metal film is described thickness t
m.
4. the Meta Materials microwave energy grabber of polarization insensitive according to claim 3, is characterized in that:
Wherein, described length of side p
xwith described hem width p
yscope be 2mm ~ 40mm,
The scope of described top layer inner ring length of side l is 1mm ~ 30mm,
The scope of described top layer inner ring hem width w is 0.4mm ~ 8mm,
Described sawtooth live width w
0scope be 0.1mm ~ 4mm,
The scope of described gap width g is 0.3mm ~ 10mm,
Described radius r
0scope be 0.05mm ~ 2mm,
Described dielectric thickness t
sscope be 1mm ~ 15mm,
Described bottom inner ring length of side l
lscope be 2mm ~ 40mm,
Described bottom inner ring hem width w
1scope be 1mm ~ 15mm,
Described film thickness t
mscope be 0.01mm ~ 0.1mm.
5. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described middle dielectric layer is dielectric material, and the scope of its relative dielectric constant real part is 1 ~ 15.
6. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, the magnitude range of described Chip-R is 50 ohm ~ 3000 ohm.
7. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described Chip-R is embedded in the place of cracking of described coating metal unit.
8. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described coating metal film is covered on described middle dielectric layer by printed circuit board technology.
9. the Meta Materials microwave energy grabber of polarization insensitive according to claim 1, is characterized in that:
Wherein, described coating metal unit and described underlying metal unit are the periodic structure with strict geometrical symmetry.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107732462A (en) * | 2017-11-24 | 2018-02-23 | 中国科学院云南天文台 | A kind of radio astronomical telescope system |
| CN108535794A (en) * | 2017-06-21 | 2018-09-14 | 南京邮电大学 | Surpass the optical memory of surface and active medium based on electromagnetism |
| CN109346835A (en) * | 2018-12-03 | 2019-02-15 | 南京信息工程大学 | A kind of novel energy receiver |
| CN110098473A (en) * | 2019-04-26 | 2019-08-06 | 西安电子科技大学 | A kind of tightly coupled super surface array of rectification |
| CN111817025A (en) * | 2020-09-03 | 2020-10-23 | 浙江科技学院 | Adjustable graphene terahertz frequency selector |
| CN113036445A (en) * | 2021-03-15 | 2021-06-25 | 北京索通新动能科技有限公司 | High-frequency electromagnetic energy collector based on metamaterial |
| CN113206393A (en) * | 2021-05-18 | 2021-08-03 | 宋天阳 | Reflection type multifunctional beam scanning satellite communication panel array antenna and control method |
| CN114649689A (en) * | 2020-12-18 | 2022-06-21 | 菜鸟智能物流控股有限公司 | Wave absorber and preparation method thereof |
| CN115395238A (en) * | 2022-07-11 | 2022-11-25 | 西安科技大学 | Array multi-frequency multi-mode microwave band super-surface wireless energy collector |
| CN116953828A (en) * | 2023-09-12 | 2023-10-27 | 之江实验室 | Multiband absorber and design method thereof |
| TWI822250B (en) * | 2022-08-16 | 2023-11-11 | 啟碁科技股份有限公司 | Transparent electromagnetic wave focusing device |
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| CN108535794A (en) * | 2017-06-21 | 2018-09-14 | 南京邮电大学 | Surpass the optical memory of surface and active medium based on electromagnetism |
| CN107732462A (en) * | 2017-11-24 | 2018-02-23 | 中国科学院云南天文台 | A kind of radio astronomical telescope system |
| CN109346835A (en) * | 2018-12-03 | 2019-02-15 | 南京信息工程大学 | A kind of novel energy receiver |
| CN110098473A (en) * | 2019-04-26 | 2019-08-06 | 西安电子科技大学 | A kind of tightly coupled super surface array of rectification |
| CN111817025A (en) * | 2020-09-03 | 2020-10-23 | 浙江科技学院 | Adjustable graphene terahertz frequency selector |
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| CN114649689A (en) * | 2020-12-18 | 2022-06-21 | 菜鸟智能物流控股有限公司 | Wave absorber and preparation method thereof |
| CN113036445A (en) * | 2021-03-15 | 2021-06-25 | 北京索通新动能科技有限公司 | High-frequency electromagnetic energy collector based on metamaterial |
| CN113206393A (en) * | 2021-05-18 | 2021-08-03 | 宋天阳 | Reflection type multifunctional beam scanning satellite communication panel array antenna and control method |
| CN115395238A (en) * | 2022-07-11 | 2022-11-25 | 西安科技大学 | Array multi-frequency multi-mode microwave band super-surface wireless energy collector |
| TWI822250B (en) * | 2022-08-16 | 2023-11-11 | 啟碁科技股份有限公司 | Transparent electromagnetic wave focusing device |
| CN116953828A (en) * | 2023-09-12 | 2023-10-27 | 之江实验室 | Multiband absorber and design method thereof |
| CN116953828B (en) * | 2023-09-12 | 2024-03-12 | 之江实验室 | Multiband absorber and design method thereof |
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| C06 | Publication | ||
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Application publication date: 20160504 |