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Numerical Experiments for Studying the Structure of the Electromagnetic Field on the Surface of a Small Spherical Conductive Medium

  • Nugzar Gomidze
  • Miranda KhajisviliEmail author
  • Izolda Jabnidze
  • Kakha Makharadze
  • Ana Slusareva
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 101)

Abstract

The present paper proposed the results of numerical experiments based on the classical theory of electrodynamics but it has practical importance in radiolocation and radio-spectroscopy at specific laboratorian and technological conditions. There is investigation the structure of the scattered electromagnetic field of a linearly or circularly polarized incident wave with frequency ω on the surface of an ideal conductive sphere with radius \( {\text{a}} \) in the condition \( \lambda \gg a \) (\( ka \le 1) \), where \( \lambda \) is the wavelength of the incident wave. The general equations for the scattered field and Poynting vector, both directly near the conductive sphere and in the far zone (Fraunhofer zone) from the scattered object are analytically received. Using computer simulation there are obtained vector diagrams for the components incident and scattered electromagnetic waves, the structure 3D Poynting vector and total electromagnetic field on the surface of a small spherical conducting object located near the antenna system. In spite of the fact that the influence on the fields at the receiving point from separate small objects is negligible, should be mentioned that under certain conditions with a lot of obstacles they can affect the summary field at the receiving point. Therefore, studying the field structure on the surface of a scattering objects is great importance.

Keywords

Conductive medium Polarization Scattering 

Notes

Acknowledgement

Work was supported by the 2019 Competition for Targeted Scientific Research Projects “Diagnostics of a liquid medium based on an estimate of the correlation function of the intensity of partially coherent waves scattered from the fluid volume”. Batumi Shota Rustaveli State University (2019), Senior scientists: PhD of Physics Miranda Khajishvili, Prof. Zhuzhuna Diasamidze; project manager PhD of Physics Kakha Makharadze.

References

  1. 1.
    Kildal, P.S.: Foundations of antenna engineering: a unified approach for line-of-sight and multipath. Chalmers University of Technology (2015)Google Scholar
  2. 2.
    Mallick, K.: Conducting sphere in an electromagnetic input field. Geophys. Prospect. 20(2), 293–303 (2006)CrossRefGoogle Scholar
  3. 3.
    Muller, R.S.: Electromagnetic fields of a nonprecessing and processing, spinning, permanent magnet, conducting sphere. Radio Sci. 26(1), 137–147 (1991)CrossRefGoogle Scholar
  4. 4.
    Mittra, R.: Computer technologies for electrodynamics. New York-Oxford-Toronto (1957)Google Scholar
  5. 5.
    Serebryakov, G.U.: Modern problems of statistical physics (2002) V.I.P. 95 (in Russian)Google Scholar
  6. 6.
    Lambert, K.M., Rudduck, R.C., Lee, T.H.: IEEE Trans. Antennas Propag. 38, 896–903 (1990)Google Scholar
  7. 7.
    Liberti, J.C., Rappapjrt, T.S.: Smart antennas for wireless communication IS-95 and third generation CDMA applications. Prentice Hall PTR, Upper Saddle River. N.J (1999)Google Scholar
  8. 8.
    Winters, J.: IEEE Pers. Commun. Magazine. 2, 23 (1998)CrossRefGoogle Scholar
  9. 9.
    Foschini, G.J., Gans M.J.: Wirel. Pers. Commun. 6(4), 311 (1998)Google Scholar
  10. 10.
    Mozingo, P.A., Miller, P.A.: Adaptive antenna arrays. Moscow. Radio Commun (1986)Google Scholar
  11. 11.
    Aizenberg, G.Z.: VHF antennas. Moscow, « Nauka » (1957) (in Russian)Google Scholar
  12. 12.
    Nicolski, B.B., Nicolski, T.N.: Electrodynamics and propagation. Moscow, « Nauka » (1957) (in Russian)Google Scholar
  13. 13.
    Gomidze, N.Kh., Surmanidze, I.S., Makharadze, K., Abuladze, N.N., Kavtaradze, L.O.: Multi-component antennas in wireless connection. RSU Works. Series: “Natural Sciences and Medicine” vol. 13, pp. 225–229, Batumi (2008)Google Scholar
  14. 14.
    Hertz, H.: The forces of electrical oscillations treated according to maxwell’s theory, Weidemann’s Ann. 36, 1 (1889); reprinted in chap. 9 of H. Hertz, Electric Waves (Dover, New York, 1962). A translation by O. Lodge appeared in Nature 39, 402 (1889)Google Scholar
  15. 15.
    Jackson, J.D.: Classical electrodynamics, 3rd edn. Wiley, New York (1999)zbMATHGoogle Scholar
  16. 16.
    McDonald K.T.: Radiation in the near zone of a hertzian dipole 22 April 2004Google Scholar
  17. 17.
    Feynman, R.P.: The Feynman Lectures on Physics. Vol. II: Mainly Electromagnetism and Matter (The New Millennium ed.), Basic Books, New York (2011) ISBN 978-0-465-02494-0Google Scholar
  18. 18.
    Bettini A.: A Course in Classical Physics, Vol. 4-Waves and Light. pp. 95, 103. Springer (2016) ISBN 978-3319483290Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Batumi Shota Rustaveli State UniversityBatumiGeorgia

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