انتشار امواج الکترومغناطیسی در یک موج برهم ‌محور رسانای الکترومغناطیسی کامل حاوی کایروپلاسما

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری،دانشگاه کاشان، کاشان،ایران

2 دانشیار،دانشگاه کاشان، کاشان،ایران

چکیده

در این مقاله، انتشار امواج الکترومغناطیسی در یک موج‌بر هم‌محور شامل هسته و پوسته‌ی رسانای الکترومغناطیسی کامل که حاوی کایروپلاسما می‌باشد، مورد بررسی قرار می گیرد. مؤلفه‌های میدان‌های الکترومغناطیسی به‌صورت تحلیلی محاسبه می‌شوند. رابطه‌ی پاشندگیِ مدهای هیبریدی با درنظرگرفتن شرایط مرزی مناسب محاسبه می‌شود و رفتار آن برحسب پارامترهای مختلف و برای مدهای مختلف، به‌صورت عددی با رسم نمودار، موردمطالعه قرار می‌گیرد. رفتار چگالی شار توان به‌صورت عددی بررسی می‌شود. تأثیر پارامترهای کایرالیتی، پذیرفتاری رسانایی الکترومغناطیسی کامل و شعاع داخلی و خارجی موج‌بر هم‌محور مذکور بر روی عدد موج بررسی می‌شوند. نشان داده می‌شود که عدد موج و بسامد قطع با تغییر پارامترهای مختلف تغییر می‌کند.

کلیدواژه‌ها


عنوان مقاله [English]

Electromagnetic waves propagation in a perfect electromagnetic conductor coaxial waveguide containing chiro plasma

نویسندگان [English]

  • Maghsoud Aghajani Baragoori 1
  • Abbas Abdoli Arani 2
1 PhD Student, Kashan University, Kashan, Iran
2 Associate Professor, Kashan University, Kashan, Iran
چکیده [English]

In this paper, the propagation of electromagnetic waves in a coaxial waveguide consisting of a core and a shell of a perfect electromagnetic conductor containing a chiro plasma is investigated. The components of the electromagnetic fields are calculated analytically. The dispersion relation of the hybrid modes is calculated by considering appropriate boundary conditions and its behavior is studied numerically by plotting the figure in terms of different parameters and for different modes. The behavior of the power flux density is investigated numerically. The effect of the chirality parameters, the perfect electromagnetic conductor admittance parameter and the inner and outer radii of the considered coaxial waveguide on the wave number are investigated. It is shown that the wave number and the cutoff frequency change with the change of various parameters.

کلیدواژه‌ها [English]

  • Chiroplasma
  • Coaxial waveguide
  • Perfect electromagnetic conductor
  • Electromagnetic power flux

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[1]    D. L. Jaggard, A. R. Mickelson, and C. H. Papas, “On electromagnetic waves in chiral media,” Applied Physics, vol. 18, no. 2, pp. 211–216, Feb. 1979, doi: 10.1007/bf00934418.
[2]    N. Engheta and P. Pelet, “Modes in chirowaveguides,” Optics Letters, vol. 14, no. 11, p. 593, Jun. 1989, doi: 10.1364/ol.14.000593.
[3]    I. V. Lindell and A. H. Sihvola, “Perfect electromagnetic conductor,” Journal of Electromagnetic Waves and Applications, vol. 19, no. 7, pp. 861–869, Jan. 2005, doi: 10.1163/156939305775468741.
[4]    I. V. Lindell and A. H. Sihvola, “Realization of the PEMC boundary,” IEEE Transactions on Antennas and Propagation, vol. 53, no. 9, pp. 3012–3018, Sep. 2005, doi: 10.1109/tap.2005.854524.
[5]    S. Ahmed and Q. A. Naqvi, “Electromagnetic scattering from a perfect electromagnetic conductor circular cylinder coated with a metamaterial having negative permittivity and/or permeability,” Optics Communications, vol. 281, no. 23, pp. 5664–5670, Sep. 2008, doi: 10.1016/j.optcom.2008.09.011.
[6]    A. Ghaffar, M. Z. Yaqoob, M. A. S. Alkanhal, S. Ahmed, Q. A. Naqvi, and M. A. Kalyar, “Scattering of electromagnetic wave from perfect electromagnetic conductor cylinders placed in un-magnetized isotropic plasma medium,” Optik, vol. 125, no. 17, pp. 4779–4783, Jun. 2014, doi: 10.1016/j.ijleo.2014.04.061.
[7]    A. Ghaffar, M. Z. Yaqoob, M. A. S. Alkanhal, M. Sharif, and Q. A. Naqvi, “Electromagnetic scattering from anisotropic plasma-coated perfect electromagnetic conductor cylinders,” AEU - International Journal of Electronics and Communications, vol. 68, no. 8, pp. 767–772, Mar. 2014, doi: 10.1016/j.aeue.2014.03.001.
[8]    M. A. Baqir and P. K. Choudhury, “Dispersion characteristics of optical fibers under PEMC twists,” Journal of Electromagnetic Waves and Applications, vol. 28, no. 17, pp. 2124–2134, Nov. 2014, doi: 10.1080/09205071.2014.971974.
[9]    A. Hussain and Q. A. Naqvi, “PERFECT ELECTROMAGNETIC CONDUCTOR (PEMC) AND FRACTIONAL WAVEGUIDE,” Electromagnetic Waves, vol. 73, pp. 61–69, Jan. 2007, doi: 10.2528/pier07032401.
[10]A. Ghaffar and M. a. S. Alkanhal, “Power flux distribution in chiroplasma‐filled perfect electromagnetic conductor circular waveguides,” Radio Science, vol. 51, no. 3, pp. 231–240, Mar. 2016, doi: 10.1002/2015rs005736.
[11]I. V. Lindell and A. H. Sihvola, “The PEMC resonator,” Journal of Electromagnetic Waves and Applications, vol. 20, no. 7, pp. 849–859, Jan. 2006, doi: 10.1163/156939306776149824.
[12]I. V. Lindell and A. H. Sihvola, “Losses in the PEMC boundary,” IEEE Transactions on Antennas and Propagation, vol. 54, no. 9, pp. 2553–2558, Sep. 2006, doi: 10.1109/tap.2006.880740.
[13]J. R. Sohn, K. Y. Kim, H.-S. Tae, and H. J. Lee, “COMPARATIVE STUDY ON VARIOUS ARTFICIAL MAGNETIC CONDUCTORS FOR LOW-PROFILE ANTENNA,” Electromagnetic Waves, vol. 61, pp. 27–37, Jan. 2006, doi: 10.2528/pier06011701.
[14]A. Ghaffar and M. A. S. Alkanhal, “Propagation through chiroplasma waveguide using perfect magnetic conductor boundary conditions,” Canadian Journal of Physics, vol. 93, no. 12, pp. 1460–1465, Jun. 2015, doi: 10.1139/cjp-2015-0050.
[15]M. A. Baqir and P. K. Choudhury, “On the energy flux through a uniaxial chiral metamaterial made circular waveguide under PMC boundary,” Journal of Electromagnetic Waves and Applications, vol. 26, no. 16, pp. 2165–2175, Sep. 2012, doi: 10.1080/09205071.2012.729299.
[16]M. X. Gao, B. Guo, L. Peng, and X. Cai, “Dispersion relations for electromagnetic wave propagation in chiral plasmas,” Physics of Plasmas, vol. 21, no. 11, Nov. 2014, doi: 10.1063/1.4901349.
[17]B. Guo, “Chirality-induced negative refraction in magnetized plasma,” Physics of Plasmas, vol. 20, no. 9, Sep. 2013, doi: 10.1063/1.4821981.
[18]J. Gong, “Electromagnetic wave propagation in a chiroplasma-filled waveguide,” Journal of Plasma Physics, vol. 62, no. 1, pp. 87–94, Jul. 1999, doi: 10.1017/s0022377899007692.
[19]M. Alizadehfar, Z. Rahmani,A. Abdoli Arani,”Excitation and amplification of hybrid modes in circular-elliptic combined plasma waveguides including relativistic electron beam”, Journal of Applied Electromagnetism, vol.11, Issue 1, pp. 61-73, 2023.[In Persian], 
20.1001.1.26455153.1402.11.1.7.8
[20]B. Abrahimi, A. Abdoli Arani,”The effect of a strong uniform axial magnetic field on the TE and TM modes fields and the injected electron dynamics in a plasma waveguide with Piet Hein cross section”, Journal of Applied Electromagnetism, vol.10, Issue 2, pp. 125-138, 2022.[In Persian]
dor/20.1001.1.26455153.1401.10.2.11.7  
[21]Somayeh Pirizad Hejrandoost, Abbas Abdoli Arani , Zeinab Rahmani Nooshabadi, (2023). Calculation of radar cross section of the magnetized plasma antenna with elliptical cross-section, Journal of “Radar”, 10(1), 0-0. magiran.com/p2697259 .[In Persian][22]Golnaz Khojeh, Abbas Abdoli Arani , (2021). Calculation of the resonance frequency of a toroidal plasma, Journal of Applied Electromagnetic, 9(2), 63-70. magiran.com/p2321901.[In Persian] https://dor.isc.ac/dor/20.1001.1.26455153.1400.9.2.8.7
دوره 13، شماره 1 - شماره پیاپی 30
بهار و تابستان
شهریور 1404
  • تاریخ دریافت: 0-1150 فروردین 786
  • تاریخ بازنگری: 0-1107 فروردین 786
  • تاریخ پذیرش: 0-1070 فروردین 786
  • تاریخ انتشار: 26 اردیبهشت 1405