CN101540207A - Slab wave-absorbing material - Google Patents
Slab wave-absorbing material Download PDFInfo
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- CN101540207A CN101540207A CN200910058939A CN200910058939A CN101540207A CN 101540207 A CN101540207 A CN 101540207A CN 200910058939 A CN200910058939 A CN 200910058939A CN 200910058939 A CN200910058939 A CN 200910058939A CN 101540207 A CN101540207 A CN 101540207A
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Abstract
The invention belongs to the technical field of electronic information and relates to electromagnetic fields and electromagnetic waves, in particular to a slab wave-absorbing material. The slab wave-absorbing material comprises unit wave-absorbing structures which are periodically arranged, wherein each unit wave-absorbing structure comprises a medium baseplate, a front metallic structure of the medium baseplate and a back metallic structure of the medium baseplate. The front metallic structure comprises 2 to 4 mutually crossed first metallic branch lines, and both ends of each first metallic branch line are respectively provided with a vertically connected linear or tangentally connected curved second metallic branch line. The back metallic structure comprises 2 to 4 mutually crossed first metallic branch lines, and both ends of each first metallic branch line are respectively tangentally connected with one circular ring-shaped second metallic branch line. Compared with the existing slab wave-absorbing material, the slab wave-absorbing material of the invention can absorb the electromagnetic waves in any polarization direction, and can better absorb in the wider incident angles of the electromagnetic field; and the electromagnetic resonance structures are mutually independent, can be separately adjusted, and have the characteristic of convenient syntonization.
Description
Technical field
The invention belongs to electronic information technical field, relate to electromagnetic field and ripple, be specifically related to slab wave-absorbing material.
Background technology
Absorbing material commonly used at present has ferrite, barium titanate, metal fine powder, graphite, silit, conductive fiber etc.Ferrite wave-absorbing material is an absorbing material of studying more and comparative maturity, because higher magnetic permeability is arranged under high frequency, and also resistivity is also bigger, and electromagnetic wave is easy to enter and decay fast, is widely used in the radar absorbing field.Also there is certain defective in the absorbing material that with the ferrite is absorbing agent, poor as hot properties, surface density is bigger, various absorbing materials only can accomplish just under the situation of matching thickness that to matching frequency no reflection events absorbs, electromagnetic parameter coupling difficulty, absorbing property improves and absorption band is expanded problems such as limited.
Along with improving constantly of information system requirement, novel wave-absorbing material continues to bring out in recent years, mainly contains nano material, chiral material, conduction high polymer, reaches structural wave-absorbing material etc., and they all have the wave-absorbing mechanism that is different from traditional absorbing material.Novel flat absorbing material provided by the present invention utilizes the periodic structure simulation to realize having the artificial material of electromagnetic wave absorption function just, is convenient to realize the adjusting of material dielectric constant and magnetic permeability by this simulation, thereby realizes electromagnetic efficient absorption.
The conception of novel flat absorbing material stems from people such as professor Smith of in May, 2008 Duke University and Landy at PHYSICAL REVIEW LETTERS, the perfect absorbent structure of delivering on the PRL 100,207402 (2008).This structure is flat absorbent structure (as shown in Figure 1), its cellular construction front is two electric resonance structures that the split ring that links to each other dorsad constitutes, the back side is the rectangle sheet metal, carry out resonance and reach absorption function by making electromagnetic wave be trapped in inside configuration, experimental result shows that this absorbing material can reach 88% absorptivity on working frequency range, just because it requires the electric field polarization direction of incident electromagnetic wave must be parallel to the length direction of back metal sheet, thereby its application has been constituted very big restriction.
Summary of the invention
The invention provides a kind of slab wave-absorbing material, on the basis that guarantees the original structure absorbing property, have the arbitrary polarisation direction electromagnetic wave absorption function.
The perfect absorbent structure that the present invention is directed to people's propositions such as professor Smith and Landy only has this deficiency of single polarised direction, on the basis that guarantees the original structure absorbing property, focuses on and expands its polarised direction.Specifically, be criss-cross construction, or increase to 3 and branch to the hexagonal decussate texture, by that analogy as 2 branches by the original structure unit is increased to the multiple-limb decussate texture.Along with the increase of branch, institute absorbent electric field polarization angle also increases thereupon, also is that structure is inhaled the reduction of wave polarization susceptibility until reaching the requirement of any polarization suction ripple.Consider that branch's increase can make the detail length of branches end shorten, the suction wave frequency raises, so select Finite Branching number (as 2～4 branches), and the terminal detail become arc strip by rectangular, and then realize that Finite Branching counts polarized electromagnetic wave absorption arbitrarily in the plane under the situation.
Detailed technology scheme of the present invention is:
A kind of slab wave-absorbing material as shown in Figure 2, comprises the unit absorbent structure of periodic arrangement, and described unit absorbent structure comprises the front metallic structure A of medium substrate C, medium substrate C and the back metal structure B of medium substrate C.The front metallic structure A of medium substrate C is made of 2～4 centers cross one another " linear ", the first metal branch line; The two ends of described every first metal branch line all have and vertical " linear " that the links to each other second metal branch line of this first metal branch line.The back metal structure B of medium substrate C is made of 2～4 centers cross one another " linear ", the first metal branch line; All the metal branch line is tangent is connected with " annular " second at the two ends of described every first metal branch line.
A kind of slab wave-absorbing material as shown in Figure 2, comprises the unit absorbent structure of periodic arrangement, and described unit absorbent structure comprises the front metallic structure A of medium substrate C, medium substrate C and the back metal structure B of medium substrate C.The front metallic structure A of medium substrate C is made of 2～4 centers cross one another " linear ", the first metal branch line; The two ends of described every first metal branch line all have and tangent " camber line shape " the second metal branch line that is connected of this first metal branch line.The back metal structure B of medium substrate C is made of 2～4 centers cross one another " linear ", the first metal branch line; All the metal branch line is tangent is connected with " annular " second at the two ends of described every first metal branch line.
In the technique scheme, the angle between the first metal branch line of the front metallic structure A of described medium substrate C or back metal structure B equates.
In the such scheme, described medium substrate C is organic high molecular polymer substrate or inorganic ceramic substrate.
Compared with prior art, the present invention has following characteristics:
1, with respect to existing slab wave-absorbing material, the present invention has the polarization characteristic of any direction, promptly can absorb the electromagnetic wave of arbitrary polarisation direction.
2, with respect to existing slab wave-absorbing material, the present invention can carry out more excellent absorption in wideer electromagnetic field incident angle.
3, electromagnetic resonance structure of the present invention is separate, can regulate respectively, and the length width that changes the first or second metal branch line all can change effective dielectric constant and magnetic permeability, thereby has tuning characteristics easily.
Description of drawings
Fig. 1 is the perfect absorbent structure synoptic diagram that people such as Pendry proposes.
Fig. 2 is the structural upright synoptic diagram of the slab wave-absorbing material that proposes of the present invention.Wherein, A is the front metallic structure of medium substrate C, and B is the back metal structure of medium substrate C, and C is a medium substrate.
Fig. 3 is the S parameters simulation result of the specific embodiment of the present invention.
Fig. 4 is the S11 parameter measured result of the specific embodiment of the present invention.
Fig. 5 is that the specific embodiment of the present invention is at the asynchronous S parameter of incident electromagnetic wave polarization angle range value simulation result.
The S parameter range value simulation result that Fig. 6 is the specific embodiment of the present invention when incident electromagnetic wave is different incidence angles and spends.
Embodiment
Fig. 2 is a specific embodiment of the present invention, and this slab wave-absorbing material comprises the unit absorbent structure of periodic arrangement.Each cellular construction comprises back metal structure B and the medium substrate C of front metallic structure A, the medium substrate C of medium substrate C.Wherein, the identical and center is cross one another " linear " the first metal branch line constitutes the front metallic structure A of medium substrate C by 2, and the angle between described 2 the first metal branch lines is 90 degree; The two ends of described every first metal branch line all have and tangent " camber line shape " the second metal branch line that is connected of this first metal branch line; Form a annulus between the described second metal branch line with 4 identical breach.
Fig. 3 and Fig. 4 have provided the s parameters simulation and the measured result of the embodiment of the invention, as can be seen from the figure, and near 11.2GHz, | S11| has obvious absorption peaks, | S21| can both be less than-18dB in the very big scope of relative bandwidth, i.e. reflection and transmission is all very little, has realized good electro-magnetic wave absorption.Fig. 5 has provided the simulation result that the invention process is listed in the absorptive character under the different polarization of the incident wave angles, and the present invention has assimilation effect preferably to any polarized electromagnetic wave as can be seen.Fig. 6 has provided the simulation result of the present invention when the different electromagnetic field incident angle.In 0-45 degree scope, the variation of incident angle is little to the influence of structure wave-absorbing effect as can be seen.
Claims (4)
1, a kind of slab wave-absorbing material comprises the unit absorbent structure of periodic arrangement, and described unit absorbent structure comprises the front metallic structure (A) of medium substrate (C), medium substrate (C) and the back metal structure (B) of medium substrate (C); It is characterized in that:
The front metallic structure (A) of described medium substrate (C) is made of 2～4 centers cross one another " linear ", the first metal branch line; The two ends of described every first metal branch line all have and vertical " linear " that the links to each other second metal branch line of this first metal branch line;
The back metal structure (B) of described medium substrate (C) is made of 2～4 centers cross one another " linear ", the first metal branch line; All the metal branch line is tangent is connected with " annular " second at the two ends of described every first metal branch line.
2, a kind of slab wave-absorbing material comprises the unit absorbent structure of periodic arrangement, and described unit absorbent structure comprises the front metallic structure (A) of medium substrate (C), medium substrate (C) and the back metal structure (B) of medium substrate (C); It is characterized in that:
The front metallic structure (A) of described medium substrate (C) is made of 2～4 centers cross one another " linear ", the first metal branch line; The two ends of described every first metal branch line all have and tangent " camber line shape " the second metal branch line that is connected of this first metal branch line;
The back metal structure (B) of described medium substrate (C) is made of 2～4 centers cross one another " linear ", the first metal branch line; All the metal branch line is tangent is connected with " annular " second at the two ends of described every first metal branch line.
3, slab wave-absorbing material according to claim 1 and 2 is characterized in that, the angle between the first metal branch line of the front metallic structure (A) of described medium substrate (C) equates; Angle between the first metal branch line of the back metal structure (B) of described medium substrate (C) equates.
4, slab wave-absorbing material according to claim 1 and 2 is characterized in that, described medium substrate (C) is organic high molecular polymer substrate or inorganic ceramic substrate.
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| CN102682858A (en) * | 2011-03-15 | 2012-09-19 | 深圳光启高等理工研究院 | Wave-absorbing material |
| CN102684608A (en) * | 2011-03-18 | 2012-09-19 | 深圳光启高等理工研究院 | Any-impedance artificially synthetic material and design method thereof |
| WO2012129924A1 (en) * | 2011-03-31 | 2012-10-04 | 深圳光启高等理工研究院 | Wave-absorbing metamaterial |
| CN102752996A (en) * | 2011-04-20 | 2012-10-24 | 深圳光启高等理工研究院 | Wave absorbing device with adjustable frequency |
| CN102809683A (en) * | 2011-06-29 | 2012-12-05 | 深圳光启高等理工研究院 | Electromagnetic wave sensor based on planar optical waveguide and metamaterial |
| CN102892278A (en) * | 2011-03-31 | 2013-01-23 | 深圳光启高等理工研究院 | Wave-absorbing meta material |
| CN102903397A (en) * | 2011-07-29 | 2013-01-30 | 深圳光启高等理工研究院 | Artificial broadband absorbing electromagnetic material |
| CN103178352A (en) * | 2013-03-05 | 2013-06-26 | 电子科技大学 | Multi-frequency single negative-permittivity metamaterial and preparation method thereof |
| CN103327801A (en) * | 2013-05-31 | 2013-09-25 | 中国舰船研究设计中心 | Control method of cabin electromagnetic environment |
| CN103647152A (en) * | 2013-12-13 | 2014-03-19 | 哈尔滨工业大学 | Broadband polarization insensitive meta-material wave absorber |
| CN103700948A (en) * | 2014-01-10 | 2014-04-02 | 厦门大学 | Dual-cantilever E-shaped reversed embedded left-handed metamaterial with adjustable cross metal line structure |
| CN104021817A (en) * | 2014-06-05 | 2014-09-03 | 哈尔滨工程大学 | Dynamic tunable absorber based on coherent control |
| CN105958212A (en) * | 2016-04-27 | 2016-09-21 | 电子科技大学 | Omnidirectional dual-band wave-absorbing material |
| CN110380228A (en) * | 2019-07-23 | 2019-10-25 | 中国科学技术大学 | A kind of wave absorbing device part based on reflectionless filter principle |
| CN116417808A (en) * | 2023-05-26 | 2023-07-11 | 安徽大学 | Metamaterial microwave absorber |
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| CN102682858B (en) * | 2011-03-15 | 2015-02-04 | 深圳光启高等理工研究院 | Wave-absorbing material |
| CN102682858A (en) * | 2011-03-15 | 2012-09-19 | 深圳光启高等理工研究院 | Wave-absorbing material |
| CN102684608A (en) * | 2011-03-18 | 2012-09-19 | 深圳光启高等理工研究院 | Any-impedance artificially synthetic material and design method thereof |
| CN102684608B (en) * | 2011-03-18 | 2015-05-20 | 深圳光启高等理工研究院 | Any-impedance artificially synthetic material and design method thereof |
| US9208913B2 (en) | 2011-03-31 | 2015-12-08 | Kuang-Chi Innovative Technology Ltd. | Wave-absorbing metamaterial |
| CN102892278A (en) * | 2011-03-31 | 2013-01-23 | 深圳光启高等理工研究院 | Wave-absorbing meta material |
| WO2012129924A1 (en) * | 2011-03-31 | 2012-10-04 | 深圳光启高等理工研究院 | Wave-absorbing metamaterial |
| CN102892278B (en) * | 2011-03-31 | 2015-05-20 | 深圳光启高等理工研究院 | Wave-absorbing meta material |
| CN102752996B (en) * | 2011-04-20 | 2015-07-15 | 深圳光启高等理工研究院 | Wave absorbing device with adjustable frequency |
| WO2012142830A1 (en) * | 2011-04-20 | 2012-10-26 | 深圳光启高等理工研究院 | Frequency-adjustable wave-absorbing apparatus |
| CN102752996A (en) * | 2011-04-20 | 2012-10-24 | 深圳光启高等理工研究院 | Wave absorbing device with adjustable frequency |
| CN102809683A (en) * | 2011-06-29 | 2012-12-05 | 深圳光启高等理工研究院 | Electromagnetic wave sensor based on planar optical waveguide and metamaterial |
| CN102903397A (en) * | 2011-07-29 | 2013-01-30 | 深圳光启高等理工研究院 | Artificial broadband absorbing electromagnetic material |
| CN103178352A (en) * | 2013-03-05 | 2013-06-26 | 电子科技大学 | Multi-frequency single negative-permittivity metamaterial and preparation method thereof |
| CN103327801A (en) * | 2013-05-31 | 2013-09-25 | 中国舰船研究设计中心 | Control method of cabin electromagnetic environment |
| CN103327801B (en) * | 2013-05-31 | 2016-02-24 | 中国舰船研究设计中心 | Control method of cabin electromagnetic environment |
| CN103647152A (en) * | 2013-12-13 | 2014-03-19 | 哈尔滨工业大学 | Broadband polarization insensitive meta-material wave absorber |
| CN103647152B (en) * | 2013-12-13 | 2015-05-27 | 哈尔滨工业大学 | Broadband polarization insensitive meta-material wave absorber |
| CN103700948A (en) * | 2014-01-10 | 2014-04-02 | 厦门大学 | Dual-cantilever E-shaped reversed embedded left-handed metamaterial with adjustable cross metal line structure |
| CN104021817A (en) * | 2014-06-05 | 2014-09-03 | 哈尔滨工程大学 | Dynamic tunable absorber based on coherent control |
| CN105958212A (en) * | 2016-04-27 | 2016-09-21 | 电子科技大学 | Omnidirectional dual-band wave-absorbing material |
| CN105958212B (en) * | 2016-04-27 | 2020-07-10 | 电子科技大学 | Omnidirectional dual-band wave-absorbing material |
| CN110380228A (en) * | 2019-07-23 | 2019-10-25 | 中国科学技术大学 | A kind of wave absorbing device part based on reflectionless filter principle |
| CN116417808A (en) * | 2023-05-26 | 2023-07-11 | 安徽大学 | Metamaterial microwave absorber |
| CN116417808B (en) * | 2023-05-26 | 2024-05-28 | 安徽大学 | Metamaterial microwave absorber |
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Open date: 20090923 |