Radiation fields of a radial dipole located on a metal sphere coated by a layer of metamaterial
Keywords:dipole, impedance sphere, Green’s function, metamaterial layer, radiation fields
AbstractRadiation fields of a radially oriented dipole located on a metal sphere coated with a thin layer of absorbing metamaterial are investigated. Numerical simulations were performed by using the electric Green's function for the space outside of an impedance sphere. An impedance of the metamaterial layer required to minimize the influence of the spherical scatterer with resonant dimensions upon the directivity of the dipole radiation in the wave zone was estimated.
G. B. Resnikov, Antennas of Flying Vehicles [in Russian]. Moscow: Soviet Radio, 1967.
D. M. Bolle, M. D. Morganstern, “Monopole and conic antennas on spherical vehicles,” IEEE Trans. Antennas Propagat., Vol. 17, No. 4, p. 477-484, 1969. DOI: https://doi.org/10.1109/TAP.1969.1139479.
F. M. Tesche, A. R. Neureuther, and R. E. Stovall, “The analysis of monopole antennas located on a spherical vehicle: Part 2, Numerical and experimental results,” IEEE Trans. EMC, Vol. EMC-18, No. 1, p. 8-15, 1976. DOI: https://doi.org/10.1109/TEMC.1976.303449.
D. Y. Penkin, V. A. Katrich, Y. M. Penkin, M. V. Nesterenko, V. M. Dakhov, S. L. Berdnik, “Electrodynamic characteristics of a radial impedance vibrator on a perfect conduction sphere,” PIER B, Vol. 62, p. 137-151, 2015. DOI: http://dx.doi.org/10.2528/PIERB14120102.
Yu. M. Penkin and V. A. Katrich, Excitation of Electromagnetic Waves in the Volumes with Coordinate Boundaries [in Russian]. Kharkov: Fakt, 2003.
M. Abramowits, I. A. Stegun, Handbook of Mathematical Functions with Formulas, Graphs and Mathematical Tables. National Bureau of Standards, Applied Mathematics Series-55, 1964.
S. L. Berdnik, V. A. Katrich, V. I. Kiyko, M. V. Nesterenko, and Y. M. Penkin, “Power characteristics of a T-junction of rectangular waveguides with a multi-element monopole-slotted coupling structure,” Telecommunications and Radio Engineering, Vol. 75, No. 6, pp. 489- 506, 2016. DOI: http://doi.org/10.1615/TelecomRadEng.v75.i6.20.
А. N. Lagarkov, V. N. Semenenko, A. A. Basharin, and N. P. Balabukha, “Abnormal radiation pattern of metamaterial waveguide,” PIERS Online, Vol. 4, No. 6, pp. 641-644, 2008.