CN109273863A - A kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance - Google Patents
A kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance Download PDFInfo
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- CN109273863A CN109273863A CN201710585397.9A CN201710585397A CN109273863A CN 109273863 A CN109273863 A CN 109273863A CN 201710585397 A CN201710585397 A CN 201710585397A CN 109273863 A CN109273863 A CN 109273863A
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- metal
- absorbent structure
- jerusalem
- meta materials
- ring
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- 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
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention belongs to radome electrical property energy design fields, are related to a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance.The absorbent structure includes FSS metal screen (1), dielectric layer (2) and metal backing (3), and FSS metal screen (1) and metal backing (3) are separately mounted to the upper and lower surface of dielectric layer (2)；The FSS metal screen (1) includes the metal microcellular structure in periodic arrangement, the metal microcellular structure includes Fang Huan and Jerusalem ring, Jerusalem ring is located in Fang Huan, and is overlapped with square ring center, the forearm of Jerusalem ring with it is parallel with square ring four edges respectively.The invention can effectively increase absorption frequency range, enhance absorptivity, increase the Stealth Fighter of battlefield aircraft, economic and social benefit is significant.
Description
Technical field
The invention belongs to radome electrical property energy design field, it is related to a kind of Meta Materials three based on EMR electromagnetic resonance and inhales frequently
Wave structure.
Background technique
Electromagnetic-wave absorbent is very important component part in weaponry material system, it can reduce aircraft
Radar target signature is one of stealthy approach of currently the most important ones to improve its battlefield survival.Meta Materials electromagnetic wave absorption
Structure is a kind of emerging engineer's composite wave-suction material, is made of FSS structure and medium substrate, with " thin, light, wide "
Speciality.Its basis is the natural law category that original matter is broken through by the design of physical structure and the adjustment of electromagnetic component parameter
Property, to change the absorption characteristic of the absorbing material.
There are equivalent electrical resonators and equivalent magnetic resonators for Meta Materials electromagnetic wave absorption structure, and the structure by adjusting FSS is joined
Number is to reach the approximation of effective dielectric constant and equivalent permeability, to realize the impedance matching of the wave-absorber and free space.
Existing Meta Materials absorbing structure only realizes absorption one to two frequency bins.
Summary of the invention
The purpose of the present invention: a kind of Meta Materials absorbent structure that can be realized the absorption of three frequency points is provided.
Technical solution of the present invention: a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance, it is characterized in that: it is described
Absorbent structure includes FSS metal screen 1, dielectric layer 2 and metal backing 3, and FSS metal screen 1 and metal backing 3 are separately mounted to medium
The upper and lower surface of layer 2；
The FSS metal screen 1 includes the metal microcellular structure in periodic arrangement, the metal microcellular structure packet
Include Fang Huan and Jerusalem ring, Jerusalem ring is located in Fang Huan, and is overlapped with square ring center, the forearm of Jerusalem ring with
It is parallel with square ring four edges respectively.
Preferably, the metal microcellular structure is made of copper foil.
Preferably, 2 dielectric constant of dielectric layer is 4.3 ± 0.2, and loss angle tangent is θ=0.025 tan.
Preferably, the dielectric layer 2 uses FR4 (Loss) material.
Preferably, the metal backing 3 is copper material.
Preferably, in metal microcellular structure Fang Huan a length of a=13 ± 0.2mm of outer annular edge, inner ring side length be b=11.8
± 0.2mm, long-armed a length of g=10.2 ± 0.2mm of Jerusalem ring, long-armed outer diameter width are e=1.4 ± 0.2mm, long-armed internal diameter
Width is e2=0.2 ± 0.05mm, a length of d=3 ± 0.2mm of Jerusalem forearm.
Preferably, in metal microcellular structure Fang Huan a length of a=13mm of outer annular edge, inner ring side length be b=11.8mm,
Long-armed a length of g=10.2mm of cold ring is spread on road, and long-armed outer diameter width is e=1.4mm, and long-armed internal diameter width is e2=0.2mm, Ye Lusa
The cold a length of d=3mm of forearm.
Beneficial effects of the present invention: the invention can effectively increase absorption frequency range, enhance absorptivity, increase battlefield aircraft
Stealth Fighter, economic and social benefit is significant.
Detailed description of the invention
Fig. 1 are as follows: FSS metal screen structural schematic diagram；
Fig. 2 are as follows: absorptivity at 0 degree of incidence angle；
Fig. 3 are as follows: the side view of Meta Materials wave absorbing device.
Specific embodiment
In 3 D electromagnetic simulation software CST, Three-tier Architecture Model as shown above is constructed.Firstly, the bottom is gold
Belong to backboard, is set as metallic copper material in soft material attribute library.Then constructing one on metal backing has thickness
Dielectric layer is set as FR4 in soft material attribute library.Finally, a FSS metal screen is built on dielectric layer, material setting
For copper foil.
1) in 3 D electromagnetic simulation software CST, boundary condition is arranged: X and Y-direction are " unit cell ", and Z-direction is
"open add space".I.e. XOY plane is the unit of infinite expanding, and Z-direction is free space.
2) in one plane wave of the side vertical incidence of the Meta Materials wave absorbing device, can generated under specific frequency it is humorous
Vibration.This wave absorbing device realizes 98.9%, 97.6% and 98.4% absorptivity in 3.39GHz, 4.94GHz and 9.91GHz respectively.
Claims (7)
1. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance, it is characterized in that: the absorbent structure includes FSS metal
Screen (1), dielectric layer (2) and metal backing (3), FSS metal screen (1) and metal backing (3) are separately mounted to the upper of dielectric layer (2)
Lower surface；
The FSS metal screen (1) includes the metal microcellular structure in periodic arrangement, and the metal microcellular structure includes
Fang Huan (4) and Jerusalem ring (5), Jerusalem ring (5) is located in Fang Huan (4), and is overlapped with Fang Huan (4) center, road
Spread the forearm of cold ring (5) with it is parallel with Fang Huan (4) four edges respectively.
2. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 1, it is characterized in that: it is described
Metal microcellular structure is made of copper foil.
3. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 1, it is characterized in that: it is described
Dielectric layer (2) dielectric constant is 4.3 ± 0.2, and loss angle tangent is θ=0.025 tan.
4. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 3, it is characterized in that: it is described
Dielectric layer (2) uses FR4 (Loss) material.
5. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 1, it is characterized in that: it is described
Metal backing (3) is copper material.
6. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 1, it is characterized in that: metal is micro-
A length of a=13 ± the 0.2mm of outer annular edge of Fang Huan (4) in cellular construction, inner ring side length are b=11.8 ± 0.2mm, Jerusalem ring
(5) long-armed a length of g=10.2 ± 0.2mm, long-armed outer diameter width be e=1.4 ± 0.2mm, long-armed internal diameter width be e2=0.2 ±
0.05mm, a length of d=3 ± 0.2mm of Jerusalem forearm.
7. a kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance according to claim 6, it is characterized in that: metal is micro-
The a length of a=13mm of outer annular edge of Fang Huan (4) in cellular construction, inner ring side length be b=11.8mm, Jerusalem ring (5) it is long-armed
A length of g=10.2mm, long-armed outer diameter width are e=1.4mm, and long-armed internal diameter width is e2=0.2mm, a length of d=of Jerusalem forearm
3mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710585397.9A CN109273863B (en) | 2017-07-18 | 2017-07-18 | Metamaterial three-frequency wave-absorbing structure based on electromagnetic resonance |
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| CN201710585397.9A CN109273863B (en) | 2017-07-18 | 2017-07-18 | Metamaterial three-frequency wave-absorbing structure based on electromagnetic resonance |
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| CN109273863A true CN109273863A (en) | 2019-01-25 |
| CN109273863B CN109273863B (en) | 2021-02-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239865A (en) * | 2020-01-14 | 2020-06-05 | 西安理工大学 | Multi-frequency terahertz metamaterial absorber based on surface plasmon polaritons |
| CN111987449A (en) * | 2020-07-28 | 2020-11-24 | 惠州市德赛西威智能交通技术研究院有限公司 | Radar antenna array structure with low side lobe |
| CN111987470A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Broadband high angular stability frequency selective surface |
| CN113067158A (en) * | 2021-03-02 | 2021-07-02 | 中国人民解放军军事科学院国防科技创新研究院 | Broadband electromagnetic phase-adjustable super-surface structure |
| CN113809551A (en) * | 2021-09-07 | 2021-12-17 | 贵州民族大学 | Real-time controllable wave absorber based on loading of ferroelectric-ferromagnetic composite film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239865A (en) * | 2020-01-14 | 2020-06-05 | 西安理工大学 | Multi-frequency terahertz metamaterial absorber based on surface plasmon polaritons |
| CN111987449A (en) * | 2020-07-28 | 2020-11-24 | 惠州市德赛西威智能交通技术研究院有限公司 | Radar antenna array structure with low side lobe |
| CN111987470A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Broadband high angular stability frequency selective surface |
| CN111987470B (en) * | 2020-07-31 | 2022-07-12 | 中国航空工业集团公司济南特种结构研究所 | Broadband high angular stability frequency selective surface |
| CN113067158A (en) * | 2021-03-02 | 2021-07-02 | 中国人民解放军军事科学院国防科技创新研究院 | Broadband electromagnetic phase-adjustable super-surface structure |
| CN113067158B (en) * | 2021-03-02 | 2022-06-17 | 中国人民解放军军事科学院国防科技创新研究院 | Broadband electromagnetic phase-adjustable super-surface structure |
| CN113809551A (en) * | 2021-09-07 | 2021-12-17 | 贵州民族大学 | Real-time controllable wave absorber based on loading of ferroelectric-ferromagnetic composite film |
| CN113809551B (en) * | 2021-09-07 | 2022-07-15 | 贵州民族大学 | Real-time controllable wave absorber based on loading of ferroelectric-ferromagnetic composite film |
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