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International Journal of Antennas and Propagation
Volume 2015, Article ID 276863, 7 pages
http://dx.doi.org/10.1155/2015/276863
Research Article

Electromagnetic Pulse of a Vertical Electric Dipole in the Presence of Three-Layered Region

College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Received 1 June 2015; Revised 8 August 2015; Accepted 24 August 2015

Academic Editor: Ikmo Park

Copyright © 2015 D. Cheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Approximate formulas are obtained for the electromagnetic pulses due to a delta-function current in a vertical electric dipole on the planar surface of a perfect conductor coated by a dielectric layer. The new approximated formulas for the electromagnetic field in time domain are retreated analytically and some new results are obtained. Computations and discussions are carried out for the time-domain field components radiated by a vertical electric dipole in the presence of three-layered region. It is shown that the trapped-surface-wave terms should be included in the total transient field when both the vertical electric dipole and the observation point are on or near the planar surface of the dielectric-coated earth.