Measurement Methods Effects on the Swithing Behaviour of Sputtered Titania Thin Films

  • Authors

    • Fatemeh Sadeghikia
    • Ali K. Horestani
    • Mahmoud T. Noghani
    • Mohammad Reza Dorbin
    • Hamed Mahdikia
    • Hajar Ja'afar
    2018-12-29
    https://doi.org/10.14419/ijet.v7i4.42.25714
  • cylindrical plasma antenna, radius, efficiency

  • The aim of this study is to examine the effect of the tube radius in a cylindrical plasma antenna on the radiation efficiency of the antenna and on some of the physical characteristics of the plasma. It is shown that density of the plasma at the excitation point and also the height of the column varies proportionally to the square root of the ratio of the inner radius to the outer one, provided the length of the tube is longer than the height of the excited plasma. Plasma density and antenna height in the column with a smaller radius derived by the analytical approach lead to a more efficient antenna in a lower working frequency and narrower bandwidth.

     

     

  • References

    1. [1] G. G. Borg, J. H. Harris, D. G. Miljak, and N. M. Martin, “Application of plasma columns to radio frequency antennas,†Appl. Phys. Lett., Vol. 74, (1999), pp. 3272–3274.

      [2] H. Ja’afar, M. T. B. Ali, A. N. B. Dagang, H. M. Zali, and N. A. Halili, “A reconfigurable monopole antenna with fluorescent tubes using plasma windowing concepts for 4.9-GHz application,†IEEE Trans. on Plas. Sci., Vol. 43, No. 3, (2015), pp. 815-820.

      [3] J. P. Rayner, A. P. Whichello, and A. D. Cheetham, “Physical characteristics of plasma antennas,†IEEE Trans. Plasma Sci., Vol. 32, No. 1, (2004), pp. 269–281.

      [4] D. Melazzi , V. Lancellotti and A. D. Capobianco , “Analytical and Numerical Study of a Gaseous Plasma Dipole in the UHF Frequency Band,†IEEE Trans. On Antennas and Propag., Vol. 65, No. 12, (2017), pp. 7091–7101.

      [5] M. Ghaderi ; G. Moradi ; P. Mousavi, “Numerical Study on a Wideband Plasma Folded-Dipole Antenna,†IEEE Antennas and Wireless Propagation Letters., Vol. 16, (2016), pp. 1253–1256.

      [6] Balanis, Antenna Theory, Analysis and Design. New Jersey: John Wiley & Sons Inc, (2005).

      [7] Zhu, Z. Chen, J. Lv, “Reconfigurable characteristics of the monopole plasma antenna and its array driven by surface wave,†WSEAS Transactions on Communications., Vol. 12, Vo. 4, (2013), pp. 143–153.

      [8] F. Sadeghikia, F. Hodjat-Kashani, “A two element plasma antenna array,†Eng. Technol. Appl. Sci. Res., Vol. 3, No. 5, (2013), pp. 516–521.

      [9] F. Sadeghikia, M. T. Noghani, and M. Simard, “Experimental study on the surface wave driven plasma antenna,†AEU Int. J. Electron. Commun., Vol. 70, No. 5, (2016), pp. 652–656.

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  • How to Cite

    Sadeghikia, F., K. Horestani, A., T. Noghani, M., Reza Dorbin, M., Mahdikia, H., & Ja'afar, H. (2018). Measurement Methods Effects on the Swithing Behaviour of Sputtered Titania Thin Films. International Journal of Engineering & Technology, 7(4.42), 204-206. https://doi.org/10.14419/ijet.v7i4.42.25714