محاسبه سطح مقطع راداری آنتن پلاسمایی مغناطیده با سطح مقطع بیضوی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشگاه کاشان، کاشان، ایران

2 دانشیار، دانشگاه کاشان، کاشان، ایران

3 استادیار، دانشگاه کاشان، کاشان، ایران

چکیده

در این پژوهش پراکندگی امواج الکترومغناطیسی با طول موج بلند از دو ساختار و پیکربندی متفاوت با سطح مقطع بیضوی بررسی می شود. ستون پلاسما در معرض میدان مغناطیسی B0 قرار دارد . در ساختار اول ستون پلاسما بوسیله یک لایه دی‌الکتریک پوشانده شده است و در ساختار دوم یک هسته دی‌الکتریک هم‌محور با ستون پلاسما قرار گرفته و در ستون پلاسما بوسیله لایه دی‌الکتریک پوشانده شده است. با حل معادلات پیوستگی ، انتقال تکانه و معادله پواسون و نیز با استفاده از شرایط مرزی مناسب، پتانسیل و میدان الکتریکی در نواحی مختلف محاسبه می شود. سطح مقطع پراکندگی و راداری محاسبه می شوند. و نمودارهای مربوط به بسامد تشدید ،میدان الکتریکی، سطح مقطع پراکندگی و راداری ترسیم می شوند.

کلیدواژه‌ها


عنوان مقاله [English]

Calculation of radar cross section of the magnetized plasma antenna with elliptical cross-section

نویسندگان [English]

  • Somayeh Pirizad Hejrandoost 1
  • Abbas Abdoli Arani 2
  • Zeinab Rahmani Nooshabadi 3
1 PhD student, Kashan University, Kashan, Iran
2 Associate Professor, Kashan University, Kashan, Iran
3 Assistant Professor, Kashan University, Kashan, Iran
چکیده [English]

In this research, the scattering of long-wavelength electromagnetic waves from an elliptical cross-section in two different structures and configurations are investigated. The plasma column is exposed to the magnetic field B0.. In the first structure, the plasma column is covered by a dielectric layer, and in the second structure, a dielectric core is coaxial with the plasma column and placed in its center, and the plasma column is covered by a dielectric layer. By solving the equations of continuity, momentum transfer and Poisson's equation, as well as by using the boundary conditions regarding the electric field and potential, we calculate the electric field in different regions. The scattering and radar cross section are calculated. The figures related to the resonance frequency , the electric field , the scattering and radar cross section are plotted

کلیدواژه‌ها [English]

  • Scattering
  • resonant frequency
  • elliptic cross section
  • scattering cross section

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https://creativecommons.org/licenses/by/4.0/

 
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دوره 10، شماره 1 - شماره پیاپی 27
شماره پیاپی 27، فصلنامه بهار و تابستان
تیر 1401
صفحه 1-11
  • تاریخ دریافت: 28 فروردین 1401
  • تاریخ بازنگری: 10 مرداد 1401
  • تاریخ پذیرش: 01 شهریور 1401
  • تاریخ انتشار: 20 شهریور 1401