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Journal of Electrical and Computer Engineering
Volume 2015, Article ID 782851, 9 pages
Research Article

Analysis of an Underground Vertical Electrically Small Wire Antenna

Faculty of Engineering, China University of Geosciences, Wuhan, Hubei 430074, China

Received 30 November 2014; Revised 11 January 2015; Accepted 13 January 2015

Academic Editor: John N. Sahalos

Copyright © 2015 Shuwei Dong 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.


The problem considered is a vertical electrically small wire antenna located underground, which transmits electromagnetic signals to the ground. Getting Green’s function of the vertical dipole underground was the first step to calculate this issue. A quasistatic situation was considered to make an approximation on Sommerfeld integral for easy solution. The method of moments was used to solve the current distribution on the antenna surface at different frequencies, which laid a good foundation for obtaining the electric field of the antenna. Then the axial and radial components of the electric field with the radial distance on the ground were investigated, as well as the voltage received on the ground. Furthermore, the influence of the frequency and stratum parameters on current and electric field was studied to understand the variation clearly.