NDLI: Wave Propagation Between Buried Antennas

Content Provider	IEEE Xplore Digital Library
Author	Kesar, A.S. Weiss, E.
Copyright Year	1963
Abstract	Buried antennas can be used in a variety of applications. For surface communication, parameters such as the ground conductivity and the depth of the buried antenna affect the channel attenuation between the antennas. A buried conical antenna for surface communication was developed at Soreq NRC. The antenna is axis-symmetric with two metallic plates, where the upper plate is conical and the lower is a flat disc. The wave propagation from the buried antenna is studied using an axis-symmetric finite-difference time-domain approach. It was found that the energy is radiated from the buried antenna to above the ground, where it forms a spherical surface wave. Due to the wave propagating above the ground faster than below the ground, the penetration of the surface wave into the ground is shaped as a shock wakefield. This wakefield is absorbed into the ground due to the finite ground conductivity. The shock wavefront corresponds to the Cherenkov angle cos^-1(1/ε^rg), where ε_rg is the ground relative dielectric permittivity. The channel attenuation from the buried antenna to a receiving antenna located either above or below the ground surface scales as 1/r⁴. Experimental demonstration was performed at 900 MHz . A good correlation was obtained for the channel attenuation between the experimental and simulation results, irrespective of whether the receiving antenna was located above or below the ground surface.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	6152
Ending Page	6156
Page Count	5
File Size	949437
File Format	PDF
ISSN	0018926X
Volume Number	61
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface waves Antenna measurements Attenuation Receiving antennas Sea surface shock waves Buried antennas communication channels finite-difference time-domain (FDTD) methods
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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