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Progress In Electromagnetics Research | ISSN: 1070-4698, E-ISSN: 1559-8985 |

Home > Vol. 159 > pp. 49-57
## ON THE RADIATION FROM A SHORT CURRENT-CARRYING STRAIGHT WIRE ORIENTED PERPENDICULAR TO A STRATIFIED MEDIUMBy M. Parise and G. Antonini
Abstract:
In a previous work, improved full-wave analytical expressions have been derived for the Sommerfeld Integrals (SIs) describing electromagnetic radiation from a short vertical straight wire located in close proximity to a conductive soil. Such formulas ensure high accuracy of the result of the computation, as well as time savings with respect to conventional techniques used to evaluate the SIs, but unfortunately may be used only when both source and field points are located at the air-medium interface. The scope of this paper is to overcome the limitations implied by the previous approach, and provide series-form expressions for the generated field components that are valid for an arbitrarily stratified medium and for any position of the vertical wire antenna and observation point in the air space above it. The expressions follow from the analytical evaluation of the integral representation for the magnetic vector potential, performed through contour integration after substituting an equivalent pole set for each branch cut of the integrand. Validity, efficiency and accuracy of the developed formulas are illustrated through numerical examples.
2. Banos, A., 3. Durrani, S. H., "Air to undersea communication with electric dipoles," 4. Moore, R. K. and W. E. Blair, "Dipole radiation in a conducting half space," 5. Wait, J. R., "The electromagnetic fields of a horizontal dipole in the presence of a conducting half-space," 6. Bannister, P. R., "Quasi-static fields of dipole antennas at the earth’s surface," 7. King, R. W. P., M. Owens, and T. T. Wu, 8. King, R. W. P., S. S. Sandler, and L. C. Shen, "The electromagnetic field of a vertical electric dipole over the earth or sea," 9. King, R. W. P., "Electromagnetic field of a vertical dipole over an imperfectly conducting halfspace," 10. Parise, M., "An exact series representation for the EM field from a vertical electric dipole on an imperfectly conducting half-space," 11. Wait, J. R., 12. Parise, M., "Second-order formulation for the quasi-static field from a vertical electric dipole on a lossy half-space," 13. Kong, J. A., 14. Ward, S. H. and G. W. Hohmann, "Electromagnetic theory for geophysical applications," 15. Balanis, C. A., "Antenna Theory: Analysis and Design," 16. Wait, J. R., "Radiation from a vertical electric dipole over a stratified ground," 17. Wait, J. R., "Influence of a sub-surface insulating layer on electromagnetic ground wave propagation," 18. Wait, J. R., "Asymptotic theory for dipole radiation in the presence of a lossy slab lying on a conducting half-space," 19. Kong, J. A., L. C. Shen, and L. Tsang, "Field of an antenna submerged in a dissipative dielectric medium," 20. Fuller, J. A. and J. R. Wait, "A pulsed dipole in the earth," 21. Parise, M., "An exact series representation for the EM field from a circular loop antenna on a lossy half-space," 22. Parise, M., "Exact EM field excited by a short horizontal wire antenna lying on a conducting soil," 23. Parise, M., "Improved Babylonian square root algorithm-based analytical expressions for the surface-to-surface solution to the Sommerfeld half-space problem," 24. Parise, M., "On the surface fields of a small circular loop antenna placed on plane stratified earth," 25. Patterson, T. N. L., "The optimum addition of points to quadrature formulae," |

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