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روش های کاهش سطح مقطع راداری برای آنتن های ریزنواری | ||
پدافند غیرعامل | ||
مقاله 3، دوره 11، شماره 3 - شماره پیاپی 43، آذر 1399، صفحه 27-37 اصل مقاله (1.52 M) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسنده | ||
مرتضی محمدی* | ||
دانشکده مهندسی برق- دانشگاه هوایی شهید ستاری، تهران، ایران | ||
تاریخ دریافت: 02 شهریور 1398، تاریخ بازنگری: 01 آبان 1398، تاریخ پذیرش: 28 بهمن 1398 | ||
چکیده | ||
فناوری نهانسازی یکی از روشهای مهم در محفوظ ماندن جنگندهها و کشتیهای نظامی در سرزمین دشمن به شمار میرود. یکی از روشهای فناوری نهانسازی، کاهش سطح مقطع راداری (RCS) آنتنهای مورد استفاده در رادارهای این جنگندهها و کشتیها میباشد. در این تحقیق، به روشهای کاهش سطح مقطع راداری برای آنتنهای ریزنواری و تاثیر این روشها روی عملکرد آنها پرداخته شده است. در ابتدا به تعریف و روابط حاکم بر سطح مقطع راداری و اهمیت کاهش آن پرداخته شده است. سپس شش روش اصلی کاهش سطح مقطع راداری برای آنتنهای ریزنواری در این گزارش آورده شده است. این شش روش عبارتاند از: شکلدهی آنتن، شکاف باند الکترونیکی (EBG)، تشدیدگرهای حلقوی شکافدار مکمل (CSRR)، صفحه زمین با سطوح انتخابگر فرکانسی (FSS)، ساختار فراموادی جاذب (MMA)، تشدیدگرهای ریزنواری. در هر بخش به مقایسه نمودار سطح مقطع راداری (RCS) آنتنهای مرجع و آنتنهای تغییر یافته برای کاهش RCS پرداخته شده است. مزایا و معایب هر یک از این روشها در بخشهای مربوطه بیان شده است. | ||
کلیدواژهها | ||
سطح مقطع راداری؛ آنتن ریزنواری؛ شکاف باند الکترونیکی؛ سطوح انتخابگر فرکانس؛ فرامواد | ||
عنوان مقاله [English] | ||
Radar Cross Section Reduction Methods for Microstrip Antennas | ||
نویسندگان [English] | ||
M. Mohammadi | ||
Department of Electrical Engineering, Aeronautical University, Tehran, Iran | ||
چکیده [English] | ||
The stealth technology is one of the most important strategies for protecting fighters and warships in the enemy's territory. Reducing the radar cross-section (RCS) of the antennas used in the radar of these fighters and ships is one of the stealth technology techniques. In this research, the methods of the radar cross section reduction for the microstrip antennas and their effects on performance of the antennas are presented. First, the radar cross section definition and the related governing relationships are presented and the importance of RCS reduction is discussed. Then, six main methods of radar cross-section reduction for microstrip antennas are introduced. These methods are: antenna shaping, electronic band gap (EBG), complementary split ring resonators (CSRRs), ground plane with frequency selective surface (FSS), metamaterial absorbers (MMA), and microstrip resonators. In each section, the radar cross section (RCS) of the reference and modified antennas are compared and the advantages and disadvantages of the relevant method is outlined. | ||
کلیدواژهها [English] | ||
Radar cross section, microstrip antenna, electronic band gap, frequency selective surface, metamaterial | ||
مراجع | ||
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