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| تعداد شماره‌ها | 1,240 |
| تعداد مقالات | 8,994 |
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فراماده جاذب جدید پهن باند، سبک‌وزن با ضخامت 4/1 میلی‌متر به‌منظور کاهش سطح مقطع راداری اجسام | ||
| الکترومغناطیس کاربردی | ||
| مقاله 4، دوره 8، شماره 1 - شماره پیاپی 20، شهریور 1399، صفحه 27-33 اصل مقاله (1.02 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| عبدالله ملک زاده* 1؛ مجید رضایت فام2 | ||
| 1دانشگاه جامع امام حسین (ع)دانشکده علوم پایهگروه فوتونیک | ||
| 2فارغ التحصیل دانشگاه جامع امام حسین (ع)، گروه فوتونیک | ||
| تاریخ دریافت: 10 مهر 1398، تاریخ بازنگری: 20 فروردین 1399، تاریخ پذیرش: 25 خرداد 1399 | ||
| چکیده | ||
| در این مقاله ساختاری جاذب مبتنی بر فرامواد به منظور کاهش سطح مقطع راداری اجسام معرفی گردیده است که آرایه دوره‌ای آن از هندسه جدید و نسبتاً ساده‌ای برخوردار است و ضخامت آن 1/4 میلی‌متر است. سازه مورد نظر توسط روش تطبیق امپدانس مورد تحلیل قرار می‌گیرد. نتایج شبیه‌سازی انجام شده با استفاده از نرم‌افزار CST نشان می‌دهد که این ساختار در بازه فرکانسی 8/1 الی 10 گیگاهرتز در قطبش‌های TE و TM امواج فرودی دارای جذب مناسبی است که باعث می‌شود سطح مقطع راداری حداقل 2 و حداکثر 80 دسی‌بل کاهش یابد. سازه جاذب پیشنهادی، ضخامت، اندازه و وزن مناسبی را دارا است که استفاده از آن باعث بهبود در کاهش سطح مقطع راداری اجسام خواهد شد و بدنه اجسام را رادار گریز خواهد کرد. | ||
| کلیدواژه‌ها | ||
| فراماده؛ جاذب؛ سطح مقطع راداری؛ رادار گریز | ||
| عنوان مقاله [English] | ||
| A New Light and Broadband Metamaterial Absorber with 1.4 mm Thicknes for Reducing Radar Cross Section of Objects | ||
| نویسندگان [English] | ||
| abdollah malakzadeh1؛ Majid Rezayatfam2 | ||
| 1Faculty in Physics group. Basic sciences Dept. | ||
| 2graduated student of Dept. Physics | ||
| چکیده [English] | ||
| We have introduced an absorber structure based on metamaterials to reduce radar cross section of objects. The absorber is a periodic array with new and relatively simple design which has a thickness of 1.4 mm. The desired structure is analysed by impedance matching method. Simulation results using CST software show that this structure has a good absorption in the frequency range of 8.1 to 10 GHz in TE and TM polarizations of the Incident waves; which reduces the radar cross-section from a minimum value of 2 to a maximum value of 80 dB. The proposed absorber structure has the appropriate thickness, size and weight that using of it will improve radar cross-section reduction of the objects and will make the body of the objects stealth. | ||
| کلیدواژه‌ها [English] | ||
| Metamaterial, Absorber, Radar cross section, stealth | ||
| مراجع | ||
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[1] Ulaby, F.T., R.K. Moore, and A.K. Fung, " Microwave remote sensing: Active and passive", Reading, Massachusetts: Addison-Wesley, 1981.## [2] Burkholder, R., L. Gupta, and J. Johnson, "Comparison of monostatic and bistatic radar images", IEEE Antennas and Propagation Magazine, vol. 45, 3, pp. 41-50, 2003.## [3] Skolnik, M.I., Radar handbook (2nd ed.). Mc Graw Hill, ed. n. ed.), New York, USA, 1990.## [4] Jenn, D.C., "Radar and laser cross section engineering", AIAA Education Series, Washington, DC, USA, 1995.## [5] Jeff Scott, R.C.S., "Reference for Aviation, Space, Design", http://www.aerospaceweb.org.## [6] Hema Singh, R.M.J., "Active Radar Cross Section Reduction, Theory and Applicationss", Cambridge University Press, 1st Edition, 2015.## [7] Piccirillo, A.C., "The Have Blue Technology Demonstrator and Radar Cross Section Reduction", SAE Technical Paper 965538, pp. 1-15, 1996.## [8] Ahmad, H., et al., "Stealth technology: Methods and composite materials, a review", Polymer Composites, pp. 1-16, 2019.## [9] Osman, I.A. and A.A.J. Alzebaidi, "Active cancellation system for radar cross section reduction", International Journal of Education and Research, vol. 1, no. 7 , pp. 1-6 , 2013.## [10] Singh, H., H.S. Rawat, and R. George, "Design of Radar Absorbing Structure, in Fundamentals of EM Design of Radar Absorbing Structures (RAS)", Springer, 2018.## [11] Fang, X., C. Zhao, and H. Bao, "Design and analysis of Salisbury screens and Jaumann absorbers for solar radiation absorption", Frontiers in Energy, vol. 12, pp. 158-168, 2018.## [12] D. Zarifi, A.F., M. Soleymani, "Extraction of Electromagnetic Parameters of Metamaterials Based on the State Space Approach" Applied Electromagnetics (In Persian),. Vol. 2. No. 2, pp. 1-9, 2015.## [13] Liu, Y. and X. Zhang, "Metamaterials: a new frontier of science and technology", Chemical Society Reviews, vol. 40. no. 5, pp. 2494-2507, 2011.## [14] Landy, N.I., et al., "Perfect metamaterial absorber", Phys. Rev. Lett., vol. 100, no. 20, pp. 207402-5, 2008.## [15] Wen, Q.-Y., et al., "Transmission line model and fields analysis of metamaterial absorber in the terahertz band", Opt. Exp., vol. 17, no. 22, pp. 20256-20265. 2009## [16] Chen, H.-T., "Interference theory of metamaterial perfect absorbers", Opt. Exp., vol. 20, no. 7, pp. 7165-7172, 2012.## [17] Sabah, C., et al., "Polarization-insensitive FSS-based perfect metamaterial absorbers for GHz and THz frequencies", Radio Science, 2014. 49(4): p. 306-314.## [18] Lvovsky, A.I., "Fresnel equations, in Encyclopedia of Optical and Photonic Engineering", Five Volume, CRC Press, 2015.## [19] Watts, C.M., X. Liu, and W.J. Padilla, "Metamaterial electromagnetic wave absorbers", Advanced materials, vol. 24, no. 23, pp. 98-120, 2012.## [20] Sun, L., et al., "Broadband metamaterial absorber based on coupling resistive frequency selective surface", Opt. Exp., vol. 20, no. 4, pp. 4675-4680, 2012.## [21] Tedeschi, N. "Brief introduction to metamaterials", https://www.docenti.unina.it/webdocenti-be/allegati/materi ale-didattico/509220, 2014.## [22] Christophe Caloz, T.I., "Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications: The Engineering Approach", John Wily, 2005.## [23] Pendry, J.B., et al. , "Extremely low frequency plasmons in metallic mesostructures", Phys. Rev. Lett., vol. 76, no. 25, pp. 4773, 1996.## [24] Pendry, J.B., et al., "Low frequency plasmons in thin-wire structures", Journal of Physics: Condensed Matter, vol. 10, no. 22, pp. 4785, 1998.## [25] Pendry, J.B., et al., "Magnetism from conductors and enhanced nonlinear phenomena", IEEE transactions on microwave theory and techniques, vol. 47, no. 11, pp. 2075-208, 1999.## [26] Advanced Elctromagnetism; Electromagnetic Waves in Dielectric Medium, University of Liverpool.## [27] Yang, H., et al., "Low RCS metamaterial absorber and extending bandwidth based on electromagnetic resonances", Progress In Electromagnetics Research, vol. 33, pp. 31-44. 2013.## | ||
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آمار تعداد مشاهده مقاله: 613 تعداد دریافت فایل اصل مقاله: 269 |
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