CN104682013A - Wide-angle polarization-insensitive low RCS meta-material wave absorber - Google Patents
Wide-angle polarization-insensitive low RCS meta-material wave absorber Download PDFInfo
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- CN104682013A CN104682013A CN201510067717.2A CN201510067717A CN104682013A CN 104682013 A CN104682013 A CN 104682013A CN 201510067717 A CN201510067717 A CN 201510067717A CN 104682013 A CN104682013 A CN 104682013A
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Abstract
The invention relates to a wide-angle polarization-insensitive low RCS (Radar Cross Section) meta-material wave absorber. The wide-angle polarization-insensitive low RCS meta-material wave absorber is applied to great reduction of a target echo, thereby achieving the stealth characteristic of a target. A basic unit of the wave absorber consists of four double-opening resonant rings which are rotationally symmetric, the transmission number of a meta-material unit in a working band is 0, the minimum reflection coefficient is minus 18.75dB, the maximum wave absorption rate is 98.9 percent, and a perfect wave absorbing effect is achieved. The TE and TM polarization incident wave within a range of minus 60 degrees to 60 degrees can be absorbed, the maximum decrement of an RCS in the working band can reach 12.35dB, and the effective stealth of the radar target is achieved.
Description
Technical field
The present invention relates to a kind of wide angle insensitive low radar scattering cross section (RCS) Meta Materials that polarizes and inhale ripple device, this system is applicable to significantly reduce target echo, the characteristics such as realize target is stealthy.
Background technology
Along with the development of modern ultra broadband, over-the-horizon radar technical merit, survival, the penetration ability of radar target are subject to serious threat.In order to improve rapidly the low detectivity of radar target, people conduct in-depth research with regard to various target stealth technology, and realizing stealthy key is farthest reduce the RCS of target (RCS).
For this reason, researcher has carried out large quantifier elimination and has proposed several effective method.The Basic Ways of current reduction RCS mainly contains following three kinds: absorb directly into ejected wave, offsets the electromagnetic field that produced by target and is inducted into ejected wave around targeted propagation.Absorb directly into radio magnetic wave be target stealthy in be substantially the most also the method be most widely used.Radar absorbing is the earliest Salisbury absorbed layer, rear invention hibert curve absorbing material, but their size is comparatively large, structure is too thick, is unfavorable for meeting miniaturized demand.In recent years, the suction ripple device based on Meta Materials is suggested, and attracts wide attention.Landy [Landy N I in 2008, Sajuyigbe S, Mock J J, et al.Perfect metamaterial absorber, Physical Review Letters, 2008,100 (20): 207402.] etc. people proposes the perfect wave-absorber based on Meta Materials, but this Meta Materials inhales ripple device to incidence angle and polarization sensitive.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, for the stealthy problem of target, propose a kind of wide angle insensitive Meta Materials that polarizes and inhale ripple device, and be applied to RCS and reduce, this Meta Materials inhales ripple device compact conformation, cost is low, structure is simple.
The object of the invention is to be achieved through the following technical solutions.
The insensitive low RCS Meta Materials of a kind of wide angle polarization of the present invention inhales ripple device, and this suction ripple device is made up of more than one elementary cell, and an elementary cell comprises metal floor, FR4 medium substrate and rotational symmetric four two split ring resonators; FR4 medium substrate is fixed on above metal floor, and rotational symmetric four two split ring resonators are fixed on above FR4 medium substrate; Two split ring resonator comprises an outer split ring resonator and internal layer split ring resonator;
The transmission coefficient of this elementary cell is 0;
Elementary cell is-20.35dB at the reflection coefficient at 9.85GHz frequency place;
The suction ripple rate of elementary cell is 98.8%, reaches perfect wave-absorbing effect;
Inhale ripple device RCS decrement is maximum in frequency range and reach 12.35dB.
Beneficial effect
It is compact and to incident angle, to the insensitive characteristic of polarization, it is 98.8% at 9.85GHz vertical incidence absorption peak that Meta Materials inhales ripple device that the present invention has arrangement;
Incident wave is within the scope of ± 60 °, and it is inhaled ripple rate and is all greater than 75% at 9.85GHz;
Can absorb ± 60 ° within the scope of TE, TM polarize incident wave, realize the maximum decrement of RCS in X-band and reach 12.35dB, realize the effectively stealthy of radar target.
Accompanying drawing explanation
Fig. 1 is the structural representation of rotational symmetric four two split ring resonators of the present invention;
Fig. 2 is the characteristic impedance parameter of metamaterial unit of the present invention;
Fig. 3 (a) is that Meta Materials of the present invention inhales ripple device TE pattern arbitrarily angled incidence suction ripple rate;
Fig. 3 (b) is that Meta Materials of the present invention inhales ripple device TM pattern arbitrarily angled incidence suction ripple rate;
Fig. 4 (a) be 50mm × 50mm Meta Materials of the present invention inhale ripple device with etc. mono-static RCS under large scale metal plate TE mode excitation;
Fig. 4 (b) be 50mm × 50mm Meta Materials of the present invention inhale ripple device with etc. mono-static RCS under large scale metal plate TM mode excitation;
Fig. 5 is the RCS of 50mm × 50mm Meta Materials battle array of the present invention and equidimension metal plate each angle under the TM mode excitation of 9.74GHz;
Fig. 6 is the structural representation of the suction ripple device in embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment
The insensitive low RCS Meta Materials of a kind of wide angle polarization inhales ripple device, as shown in Figure 6, this suction ripple device is made up of 10 × 10 elementary cells, an elementary cell comprises metal floor, FR4 medium substrate and rotational symmetric four two split ring resonators, FR4 medium substrate is bonded in above metal floor, and rotational symmetric four two split ring resonators are bonded in above FR4 medium substrate; Two split ring resonator comprises an outer split ring resonator and internal layer split ring resonator; Metal floor is metal copper plate;
The structural representation of rotational symmetric four two split ring resonators as shown in Figure 1;
The dielectric constant of FR4 medium substrate is 4.4, thickness h=0.8mm, outer split ring resonator length of side l=2.22mm, metal live width w=2mm, two split ring resonator spacing d=0.2mm, the extended distance of outer split ring resonator and internal layer split ring resonator is g=0.3mm, the length of side a=5mm of an elementary cell.
To above-mentioned suction ripple device carry out characteristic impedance parameter extraction, inhale the extraction of ripple rate parameter and the emulation of mono-static RCS;
Inhale the result of the extraction of the characteristic impedance parameter of elementary cell within the scope of 9 ~ 11GHz of ripple device as shown in Figure 2, as shown in Figure 2, be 0.85 in the extraction of values of 9.85GHz impedance real part, imaginary part is-0.167, shows to mate well with air at this frequency.
Different angles TE pattern electromagnetic wave incident Meta Materials inhales the suction ripple rate of ripple device elementary cell as shown in Fig. 3 (a).From Fig. 3 (a), inhaling ripple rate at 9.85GHz is 98.8%, inhales ripple rate within the scope of 9.68 ~ 10.03GHz more than 50%, and namely half-power inhales ripple relative bandwidth is 3.6%.Within the scope of ± 60 °, inhale ripple rate all more than 80%.
Different angles TM pattern electromagnetic wave incident Meta Materials inhales the suction ripple rate of the elementary cell of ripple device as shown in Fig. 3 (b), from Fig. 3 (b), inhaling ripple rate at 9.85GHz is 98.7%, within the scope of 9.68 ~ 10.03GHz, inhale ripple rate more than 50%, namely half-power inhales ripple relative bandwidth is 3.6%.Within the scope of ± 60 °, inhale ripple rate all more than 75%.
Fig. 4 (a) be Meta Materials of the present invention inhale ripple device and onesize size metal copper plate within the scope of 9 ~ 11GHz at the RCS of 0 degree of TE pattern electromagnetic wave incident.Inhale ripple device RCS at 9.7GHz place Meta Materials to reduce relative to the RCS of the metal copper plate of onesize size and reach 8.17dB.Fig. 4 (b) be Meta Materials of the present invention inhale ripple device and onesize size metal copper plate within the scope of 9 ~ 11GHz at the RCS of 0 degree of TM pattern electromagnetic wave incident.Can find, reach 12.35dB at 9.74GHz place RCS decrement.
Fig. 5 is the RCS of metal copper plate at 9.74GHz incident wave TM pattern electromagnetic wave incident within the scope of-75 ° ~ 75 ° that Meta Materials of the present invention inhales ripple device and onesize size.Obvious RCS Reduce shrinkage effect is all had when can find out incident with ± 30 ° within the scope of ± 15 °.
The foregoing is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent example of equivalent variations, but everyly do not depart from technical solution of the present invention content, the any simple modification done above example according to technical spirit of the present invention, equivalent variations and modification, all should belong to the covering scope of the claims in the present invention.
Claims (2)
1. the insensitive low RCS Meta Materials of wide angle polarization inhales ripple device, it is characterized in that: this suction ripple device is made up of more than one elementary cell, an elementary cell comprises metal floor, FR4 medium substrate and rotational symmetric four two split ring resonators, FR4 medium substrate is fixed on above metal floor, and rotational symmetric four two split ring resonators are fixed on above FR4 medium substrate; Two split ring resonator comprises an outer split ring resonator and internal layer split ring resonator.
2. the insensitive low RCS Meta Materials of a kind of wide angle polarization according to claim 1 inhales ripple device, it is characterized in that: the dielectric constant of medium substrate is 4.4, thickness h=0.8mm, outer split ring resonator length of side l=2.22mm, metal live width w=2mm, the length of side a=5mm of elementary cell, two split ring resonator spacing d=0.2mm, extended distance g=0.3mm.
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Cited By (18)
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| CN105347295A (en) * | 2015-09-11 | 2016-02-24 | 北京大学 | Adjustable and controllable metamaterial array design based on focused ion beam and MEMS (Micro-Electromechanical System) machining process |
| CN106159459A (en) * | 2016-05-28 | 2016-11-23 | 上海大学 | A kind of three frequency polarized insensitive electromagnetic energy collection structure unit and collection surface |
| CN106450795A (en) * | 2016-10-21 | 2017-02-22 | 西北工业大学 | Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial |
| CN106785476A (en) * | 2017-02-28 | 2017-05-31 | 南京理工大学 | A kind of Meta Materials wave-absorber |
| CN107069194A (en) * | 2016-12-16 | 2017-08-18 | 杨明 | A kind of miniaturization gps antenna based on Meta Materials |
| CN107465000A (en) * | 2017-07-23 | 2017-12-12 | 中国人民解放军空军工程大学 | Broadband, the insensitive spiral coding RCS of polarization reduce super surface and its design method |
| CN107482323A (en) * | 2017-08-14 | 2017-12-15 | 西南大学 | A kind of terahertz wave band multi-layer metamaterial broadband wave-absorber |
| CN107634346A (en) * | 2017-08-07 | 2018-01-26 | 西安电子科技大学 | The super surface interlayers of ENZ for the transmission of TE and TM polarized waves multi-angle |
| CN107658571A (en) * | 2017-09-26 | 2018-02-02 | 中国人民解放军空军工程大学 | Coding absorbing meta-material applied to the reduction of wideband radar reflecting section |
| CN108068410A (en) * | 2017-12-15 | 2018-05-25 | 航天科工武汉磁电有限责任公司 | A kind of lightweight broad-band electromagnetic-wave absorbent and preparation method thereof |
| CN108336504A (en) * | 2018-01-24 | 2018-07-27 | 中国科学院上海光学精密机械研究所 | A kind of microwave broadband Meta Materials wave absorbing device of infrared transmission |
| CN108963468A (en) * | 2018-07-26 | 2018-12-07 | 中国计量大学 | Dual openings ring Terahertz is adjustable absorber |
| CN109088170A (en) * | 2018-06-05 | 2018-12-25 | 中国人民解放军空军工程大学 | Super surface spin, wavefront controller and its design method based on principle of interference |
| WO2019127935A1 (en) * | 2017-12-29 | 2019-07-04 | 深圳光启尖端技术有限责任公司 | Absorber of three-dimensional metamaterial |
| CN111525277A (en) * | 2020-04-24 | 2020-08-11 | 太原理工大学 | Broadband adjustable wave absorber with vanadium dioxide metamaterial loaded on dielectric layer |
| CN111900548A (en) * | 2020-08-28 | 2020-11-06 | 西安电子科技大学 | Ultra-wideband low-scattering metamaterial based on combination of wave-absorbing material and super surface |
| CN111900546A (en) * | 2020-08-18 | 2020-11-06 | 西安电子科技大学 | Hybrid-mechanism electromagnetic super-surface for wide-band wide-angle RCS reduction |
| CN113922063A (en) * | 2021-11-23 | 2022-01-11 | 电子科技大学 | Microstrip structure array capable of increasing antenna gains of different resonant frequency points and application thereof |
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| CN105347295A (en) * | 2015-09-11 | 2016-02-24 | 北京大学 | Adjustable and controllable metamaterial array design based on focused ion beam and MEMS (Micro-Electromechanical System) machining process |
| CN106159459A (en) * | 2016-05-28 | 2016-11-23 | 上海大学 | A kind of three frequency polarized insensitive electromagnetic energy collection structure unit and collection surface |
| CN106159459B (en) * | 2016-05-28 | 2019-10-11 | 上海大学 | A kind of three frequency polarized insensitive electromagnetic energy collection structure unit and collect surface |
| CN106450795A (en) * | 2016-10-21 | 2017-02-22 | 西北工业大学 | Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial |
| CN106450795B (en) * | 2016-10-21 | 2019-04-05 | 西北工业大学 | A kind of insensitive single layer Meta Materials absorbent structure of double frequency polarization |
| CN107069194A (en) * | 2016-12-16 | 2017-08-18 | 杨明 | A kind of miniaturization gps antenna based on Meta Materials |
| CN106785476A (en) * | 2017-02-28 | 2017-05-31 | 南京理工大学 | A kind of Meta Materials wave-absorber |
| CN106785476B (en) * | 2017-02-28 | 2019-12-27 | 南京理工大学 | Metamaterial wave absorber |
| CN107465000B (en) * | 2017-07-23 | 2020-04-21 | 中国人民解放军空军工程大学 | Broadband, polarization-insensitive spiral coding RCS (radar cross section) reduction super surface and design method thereof |
| CN107465000A (en) * | 2017-07-23 | 2017-12-12 | 中国人民解放军空军工程大学 | Broadband, the insensitive spiral coding RCS of polarization reduce super surface and its design method |
| CN107634346B (en) * | 2017-08-07 | 2020-07-28 | 西安电子科技大学 | ENZ super-surface interlayer for multi-angle transmission of TE and TM polarized waves |
| CN107634346A (en) * | 2017-08-07 | 2018-01-26 | 西安电子科技大学 | The super surface interlayers of ENZ for the transmission of TE and TM polarized waves multi-angle |
| CN107482323A (en) * | 2017-08-14 | 2017-12-15 | 西南大学 | A kind of terahertz wave band multi-layer metamaterial broadband wave-absorber |
| CN107482323B (en) * | 2017-08-14 | 2020-01-24 | 西南大学 | Terahertz waveband multilayer metamaterial broadband wave absorber |
| CN107658571B (en) * | 2017-09-26 | 2021-01-15 | 中国人民解放军空军工程大学 | Encoding wave-absorbing metamaterial applied to reduction of reflection section of broadband radar |
| CN107658571A (en) * | 2017-09-26 | 2018-02-02 | 中国人民解放军空军工程大学 | Coding absorbing meta-material applied to the reduction of wideband radar reflecting section |
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| CN108336504A (en) * | 2018-01-24 | 2018-07-27 | 中国科学院上海光学精密机械研究所 | A kind of microwave broadband Meta Materials wave absorbing device of infrared transmission |
| CN109088170A (en) * | 2018-06-05 | 2018-12-25 | 中国人民解放军空军工程大学 | Super surface spin, wavefront controller and its design method based on principle of interference |
| CN109088170B (en) * | 2018-06-05 | 2020-06-02 | 中国人民解放军空军工程大学 | Super-surface spinning and wave-front controller based on interference principle and design method thereof |
| CN108963468A (en) * | 2018-07-26 | 2018-12-07 | 中国计量大学 | Dual openings ring Terahertz is adjustable absorber |
| CN111525277A (en) * | 2020-04-24 | 2020-08-11 | 太原理工大学 | Broadband adjustable wave absorber with vanadium dioxide metamaterial loaded on dielectric layer |
| CN111900546A (en) * | 2020-08-18 | 2020-11-06 | 西安电子科技大学 | Hybrid-mechanism electromagnetic super-surface for wide-band wide-angle RCS reduction |
| CN111900548A (en) * | 2020-08-28 | 2020-11-06 | 西安电子科技大学 | Ultra-wideband low-scattering metamaterial based on combination of wave-absorbing material and super surface |
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