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Progress In Electromagnetics Research B | ISSN: 1937-6472 |

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## ELECTRODYNAMIC CHARACTERISTICS OF HORIZONTAL IMPEDANCE VIBRATOR LOCATED OVER A FINITE-DIMENSIONAL PERFECTLY CONDUCTING SCREENBy N. P. Yeliseyeva, S. L. Berdnik, V. A. Katrich, and M. V. Nesterenko
Abstract:
A problem of electromagnetic waves radiation by an impedance vibrator located over finite-dimensional perfectly conducting screen is solved. The vibrator may have surface impedance distributed over its length. The solution is derived using asymptotic expressions for the current in a horizontal impedance vibrator placed over an infinite plane, obtained by averaging method. The problem was solved provided that the diffracted fields from the edges of the screen have little effect on the vibrator current amplitude, i.e. if the screen dimensions are comparable to or larger than the wavelength. Full radiation fields in all observation space in the far zone were found by the uniform geometrical theory of diffraction. The vibrator dimensions, value and type of surface impedance, removing from the screen and screen sizes were used as parameters. The multivariable electrodynamic characteristics of the resonant impedance vibrators placed above an infinite plane and square screen were studied. Characteristics dependences upon the vibrator dimensions, value and type of the surface impedance, removing from the screen, and screen dimensions were obtained.
2. Keller, J. B., "Geometrical theory of diffraction," 3. Tsai, L. L., D. R. Wilton, M. G. Harrison, and E. H. Wright, "A comparison of geometrical theory of diffraction and integral equation formulation for analysis of reflector antennas," 4. Kouyoumjian, R. G. and P. H. Pathak, "A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface," 5. Pathak, P. H., "High frequency techniques for antenna analysis," 6. Yeliseyeva, N. P. and N. N. Gorobets, 7. Gorobets, N. N. and N. P. Yeliseyeva, "Polarization effects caused by diffraction of the radiated of an arbitrarily oriented electric dipole at the edge of a perfectly conducting half plane," 8. Gorobets, N. N., N. P. Yeliseyeva, and Ye. A. Antonenko, "Optimization of radiation characteristics of wire-screened antennas," 9. Nesterenko, M. V., "Analytical methods in the theory of thin impedance vibrators," 10. Nesterenko, M. V., V. A. Katrich, Y. M. Penkin, V. M. Dakhov, and S. L. Berdnik, 11. Yeliseyeva, N. P., "The input impedance of an arbitrarily oriented electric dipole located over a rectangular screen. Part 1 --- The method of calculation," 12. Yeliseyeva, N. P., "The input impedance of an arbitrarily oriented electric dipole located over a rectangular screen. Part 2 --- The calculation results," 13. Gorobets, N. N. and N. P. Yeliseyeva, "Metallic shield influence on the resonant length of a wire antenna," 14. Khizhnyak, N. A., 15. Morse, P. M. and H. Feshbach, 16. Nesterenko, M. V., D. Yu. Penkin, V. A. Katrich, and V. M. Dakhov, "Equation solution for the current in radial impedance monopole on the perfectly conducting sphere," 17. King, R. W. P., 18. Vandakurov, Yu. V., "Diffraction of electromagnetic waves radiated by arbitrarily oriented electric or magnetic dipole over the perfectly conducting half-plane," |

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