The Investigation of Electromagnetic Waves Scattering by a Warm Plasma Antenna with an Elliptical Cross Section

Document Type : Original Article

Authors

1 PhD Student, Department of Laser and Photonics, Faculty of Physics, Kashan University, Kashan, Iran

2 Associate Professor, Department of Laser and Photonics, Faculty of Physics, Kashan University, Kashan, Iran

3 Assistant Professor, Department of Laser and Photonics, Faculty of Physics, Kashan University, Kashan, Iran

Abstract

In this paper, the scattering of long wavelength electromagnetic waves from a warm plasma column with an elliptical cross section is investigated. We assume that the incident wavelength is much larger than the cross-sectional area of the elliptical column and enter the thermal effects into the calculations using the Boehm-Gross equation. Using suitable boundary conditions, we calculate the electric potential as well as the electric field at the points inside and outside the plasma column with an elliptical cross section. Then we obtain the dispersion equation in this case and show that in the limit state, this equation becomes the dispersion equation in a plasma column with a circular cross section. Considering the plasma resonance condition in an elliptical cross-section plasma column, we calculate the resonant frequency in this configuration. We plot figures of potential amplitude at the inside and outside points. Note that using the resonant frequency, we can calculate the characteristics of the plasma antenna under study, such as plasma density.

Keywords

Smiley face

References

[1]     W. Ren and L.Q. Xiao,  “Analysis of electromagnetic scattering by a plasma-coatedconducting sphere using simplified wave functions,” J. Hangzhou Dianzi University, vol. 28, pp. 1–6, 2008 (In Chinese.).
[2]     S. B. Liu,  J. J. Mo, and N. C. Yuan, “Research on the absorption of EM-waves byinhomogeneous magnetized plasmas, Acta Electronica Sinica,  vol. 31, pp. 372–375, 2003 (In Chinese).
[3]     D. J. Gregolre, J. Santoru, and R. W. “Schumacher, Electromagnetic wave propagation inunmagnetized plasmas, Accession No. ADA250710, Air Force Office of Scientific Research Boiling  Air force Base, Washington, DC, p. 710, 1992.
[4]     Y. Chang, W. F. Chen, and  N. Luo, “Analysis of the spatial scattering characteristic for thereentry target cloaked by plasma based on the physical optics method,” J. Microwave  vol. 24, pp. 2–6, 2008 (In Chinese).
[5]     M. Tohidlo, S. M. Hashemi, and F. Sadeghikia, “The Effect of Frequency and Waveform of AC Excitation on U-Shaped Monopole Plasma Antenna,” Journal of Radar, vol. 7, no. 2, pp. 89-97, 2020. (In Persian)
[6]     R. J.  Vidmar, “On the use of atmospheric pressure plasmas as electromagnetic reflectors and absorbers,” IEEE Trans. Plasma Sci. vol.18, pp. 733–741, 1990.
[7]     T. J. Dwyer, J. R. Greig, D. P. Murphy, J. M. Perin, R. E. Pechacek, and  M. Raileigh, “On the Feasibility of using an Atmospheric Discharge Plasma as an RF Antenna,” IEEE Trans. Antennas Propag., vol. 32, pp.141–146, 1984.
[8]     R. Dutta, R. Biswas, and  N. Roy, “Reduction of attenuation of EM wave inside plasma formed during supersonic or hypersonic re-entry of missile like flight vehicles by the application of DC magnetic field—a technique for mitigation of RF Blackout,” In Proc. of the IEEE Applied Electromagnetics Conf., India, December 2011.
[9]     A. B. Petrin, “Transmission of microwaves through magnetoactive plasma, IEEE Trans.Plasma Sci. vol. 29, pp. 471–478, 2001.
[10]  W. W. Destler, J. E. Degrange, H. H. Fleischmann,
 J. Rodgers, and Z. Segalov, “Experimental studies of high-power microwave reflection, transmission, and absorption from a plasma-covered plane conducting boundary,” J. Appl. Phys. vol.69, pp. 6313–6318 , 1991.
[11]  Y. Zhong-Cai and S. Jia-Ming, “Collisional, nonuniform plasma sphere scatteringcalculation by FDTD employing a Drude model,” Int. J. Infrared Millimeter Waves. vol. 28, pp. 987–992, 2007.
[12]  Y. Li, M. Wang, Q. Dong, and G. Tang, “Anisotropic scattering for a magnetized coldplasma sphere,” Energy Power Eng. 2 , pp. 122–126,2010.
[13]  T. Naito and O. Sakai, “Analytical formulation for radiation characteristics of a surface wave sustained plasma antenna,” Phys. Plasmas, vol. 26, p. 73, 2019.
[14]  Y. L. Geng, “Scattering of a plane wave by an anisotropic plasma-coated conducting sphere,” Int. J. Antennas Propagat. Article ID 409764, p.6, 2011.
[15]  Y. L. Geng, X. Wu, and L. W. Li, “Analysis of electromagnetic scattering by a plasmaanisotropic sphere,” Radio Sci, vol. 38, pp. 1104 –1112, 2003.
[16]  N. A. Krall and A. W. Trivelpiece, “Principles of Plasma Physics, McGraw-Hill, New York, 1973.
[17]  A. Abdoli-Arani, R. Ramezani-Arani, B. Jazi, and 
S. Golharani, “Scattering from an elliptical cylindrical plasma for electromagneticwaves with wavelength much greater than the dimensionsof the plasma cross-section,” vol. 22. no 3, pp. 370-382, 2012.
[18]  P. M. Morse and H. Feshbach, “Methods of Theoretical Physics,” vol. 1, McGraw-Hill, New York, 1953.
Radar
Volume 9, Issue 1 - Serial Number 25
September 2021
Pages 57-63

Files

History

  • Receive Date: 05 April 2021
  • Revise Date: 12 July 2021
  • Accept Date: 04 December 2021
  • Publish Date: 23 August 2021

Share

How to cite

Statistics