Summary
International Symposium on Antennas and Propagation
2005
Session Number:2C3
Session:
Number:2C3-5
Vertical Dipole Radiation in the Presence of the Spherical Earth: Discontinuity and Convergence Studies
Le-Wei Li, Ting Fei, Zhong-Cheng Li, Qun Wu ,
pp.-
Publication Date:2005/11/3
Online ISSN:2188-5079
Summary:
In this paper, we have re-looked into the classic problem of the vertical antenna radiation in the presence of a spherical earth which is considered to be either perfectly electric conducting or lossy dielectric. Three important issues were considered, one of which is the closed solution to the direct wave radiation into the observation point (that can be located anywhere in the space), the second of which is the continuity of the field expressions on the spherical surface at γ=γ' in the space, and the third of which is the fast solution to the scattered field due to the presence of the earth. The scattered field is split into two contributions: one is the dominant and closed form solution while the other is the summated contribution. The second summated contribution is much smaller in value than the first dominant term and at the same time, it has better convergence property than the original scattered field in summation form. The convergence number is quantitatively analyzed and analytically obtained. Some examples are considered to demonstrate the special properties of the respective field contributions.