研究了电磁缺陷修复材料在飞行器边缘、缝隙等表面电磁缺陷散射控制中的应用，阐述了其原理和发展状况。给出了表面电磁缺陷的基本定义，分析了其散射特点，并提出电磁缺陷修复原理及基本方法。电磁缺陷修复材料主要包括用于表面波抑制的磁性材料、用于窄缝隙保证电连续的导电材料和用于边缘散射控制的渐变阻抗材料等三类，重点介绍了用于边缘散射控制的渐变阻抗材料。该渐变阻抗材料基于图形渐变频率选择表面的概念，加载于边缘考虑平行极化和垂直极化两种情况，并与边缘锯齿化和未加载情况进行比较。从研究情况来看，经过恰当的材料选取和合理的阻抗梯度设计，渐变阻抗材料可以有效控制边缘散射，并能取得宽带效果。最后展望了渐变阻抗材料在电磁散射及电磁辐射领域的应用前景。
The theory, application and development of electromagnetic discontinuities repairing materials in scattering controlling of electromagnetic discontinuities such as edge, gaps and grooves and steps are described.The definition and characteristic of surface electromagnetic discontinuities are analyzed , and the theory and methods for repairing electromag-netic discontinuities are also proposed.Electromagnetic discontinuities repairing materials including magnetic materials for suppression of surface wave, conductive materials for repairing the narrow gaps or grooves, and the tapered impedance ma-terials for controlling edge scattering are discussed respectively, and one of which, the tapered impedance materials are il-lustrated particularly.The tapered resistive materials realized by geometric variation based on frequency-selective surfaces concepts is demonstrated having good suppression of edge scattering from a triangular metallic plate .Electromagnetic back-scattering of the as-prepared target from a triangular plate with edge tapered resistive sheet loading is proposed for both hor-izontal polarization and vertical polarization, and compared with that from the one of the same shape but loaded with serra-ted shaping or none resistive sheet on the edge .The results show that the tapered impedance materials can regulate effec-tively edge scattering by choosing the appropriate materials and devising the reasonable gradient impedance .Some view-points of the tapered impedance material ’ s future application in electromagnetic scattering and electromagnetic radiation domains are proposed.
参考文献
| [1] | 桑建华,张宗斌,王烁.低RCS飞行器表面弱散射源研究[J].航空工程进展,2012(03):257-262. |
| [2] | Eugene F Knott;Michael T Tuley;Johun F Shaeffer.Radar Cross Section[J].SciTech Publishing,2004:270-273. |
| [3] | 桑建华,周海.飞行器表面电磁缺陷及雷达吸波材料应用[J].航空材料学报,2003(02):51-55. |
| [4] | David C Jenn.Radar and Laser Cross Section Engineering[J].American Institute of Aeronautics and Astronautics Inc,2005:324-327. |
| [5] | Brett S Naisty.Lockheed Martin' s Affordable Stealth[M].USA:National Press Club,2000:1-8. |
| [6] | Ruck G T;Barrick D E;Stuart W D.Radar Cross Section Handbook (Volume 2)[J].New York:Plenum,1970:602. |
| [7] | Eugene F Knott;Michael T Tuley;Johun F Shaeffer.Radar Cross Section[M].SciTech Publishing,2004:343-344. |
| [8] | 陈海燕 .表面电磁缺陷散射机制及其RCS减缩研究[D].Chengdu:University of Electron-ic Science and Technology of China,2011. |
| [9] | Collin R.Field Theory of Guided Waves[M].New York:IEEE Press,1991:701-705. |
| [10] | Stratton J.Electromagnetic Theory[M].McGraw-Hill,1941:23-24. |
| [11] | Ling, R T;Scholler J D;Ufimtsev P Y.The Propagation and Ex-citation of Surface Waves in an Absorbing Layer[J].Progress in Electromagnetics Research,1998(19):49-91. |
| [12] | Ufimtsev PY.;Scholler JD.;Ling RT. .Transformation of surface waves in homogeneous absorbing layers[J].IEEE Transactions on Antennas and Propagation,2000(2):214-222. |
| [13] | Ufimtsev P.Ya.;Ling R.T. .New results for the properties of TE surface waves in absorbinglayers[J].IEEE Transactions on Antennas and Propagation,2001(10):1445-1452. |
| [14] | ZHOU Pei-heng,DENG Long-jiang,XIE Jian-liang,LIANG Di-fei,CHEN Liang.A Study about Fe-Ni Mechanical Alloying Process by Dry and Wet Method[J].中国电子科技,2005(02):164-167. |
| [15] | JianLiang Xie;Mangui Han;Liang Chen;Renxiong Kuang;Longjiang Deng .Microwave-absorbing properties of NiCoZn spinel ferrites[J].Journal of Magnetism and Magnetic Materials,2007(1):37-42. |
| [16] | Han Man-Gui,Ou Yu,Liang Di-Fei,Deng Long-Jiang.Annealing effects on the microwave permittivity and permeability properties of Fe79Si16B5 microwires and their microwave absorption performances[J].中国物理B（英文版）,2009(03):1261-1265. |
| [17] | Mangui Han;Yu Ou;Wenbing Chen .Magnetic properties of Ba-M-type hexagonal ferrites prepared by the sol-gel method with and without polyethylene glycol added[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):185-189. |
| [18] | Wang X;Zhang L;Guan M.A Ferromagnetic Resonance Numerical Computation Method of Ferromagnetic Nano-Sphere[J].Advanced Materials Research,2013(643):157-161. |
| [19] | Barkeshli K.;Volakis J.L. .Scattering from narrow rectangular filled grooves[J].IEEE Transactions on Antennas and Propagation,1991(6):804-810. |
| [20] | Zhenjiang Song;Jianliang Xie;Peiheng Zhou.Toughened polymer composites with flake carbonyl iron powders and their electromagnetic/absorption properties[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2013:677-681. |
| [21] | Song Z J;Xie J L;Peng J N.Toughened Epoxy Filled with Ferromagnetic Particles as High Temperature Resistant Microwave Absorbing Coating[J].Piers Online,2011(07):646-650. |
| [22] | Chen H Y;Zhang H B;Deng L J.Design of an Ultra-Thin Magnetic-Type Radar Absorber Embedded with FSS[J].IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS,2010(09):899-901. |
| [23] | H.-Y. Chen;L.-J. Deng;P.-H. Zhou;J.-L. Xie .Tapered impedance loading for suppression of edge scattering[J].IET microwaves, antennas & propagation,2011(14):1744-1749. |
| [24] | Chen H Y;Xie J L;Zhu Z W.Method of Tapered Resis-tive Sheet Loading for Controlling Edge Scattering[J].Micro-wave and Optical Technology Letters,2013 |
| [25] | 刘战合,黄沛霖,武哲,高旭.基于MLFMA的飞行器锯齿边板散射特性分析[J].北京航空航天大学学报,2008(05):499-502. |
| [26] | Chen, H.-Y.;Deng, L.-J.;Zhou, P.-H. .Suppression of surface wave from finite conducting surfaces with impedance loading at margins[J].Journal of Electromagnetic Waves and Applications,2010(14/15):1977-1989. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%