An investigation of magnetic antennas for ground penetrating radar

Bellett, P. T. and Leat, C. J. (2003) An investigation of magnetic antennas for ground penetrating radar. Progress in Electromagnetics Research, 43 257-271. doi:10.2528/PIER03051301


Author Bellett, P. T.
Leat, C. J.
Title An investigation of magnetic antennas for ground penetrating radar
Journal name Progress in Electromagnetics Research   Check publisher's open access policy
ISSN 1070-4698
Publication date 2003
Sub-type Article (original research)
DOI 10.2528/PIER03051301
Volume 43
Start page 257
End page 271
Total pages 15
Editor J. Kong
Place of publication The United States of America
Publisher EMW Publishing
Collection year 2003
Language eng
Subject C1
291701 Antenna Technology
640100 Exploration
Abstract For ground penetrating radar (GPR), smaller antennas would provide considerable practical advantages. Some of which are: portability; ease of use; and higher spatial sampling. A theoretical comparison of the fundamental limits of a small electric field antenna and a small magnetic field antenna shows that the minimum Q constraints are identical. Furthermore, it is shown that only the small magnetic loop antenna can be constructed to approach, arbitrarily closely, the fundamental minimum Q limit. This is achieved with the addition of a high permeability material which reduces energy stored in the magnetic fields. This is of special interest to some GPR applications. For example, applications requiring synthetic aperture data collection would benefit from the increased spatial sampling offered by electrically smaller antennas. Low frequency applications may also benefit, in terms of reduced antenna dimensions, by the use of electrically small antennas. Under these circumstances, a magnetic type antenna should be considered in preference to the typical electric field antenna. Numerical modeling data supports this assertion.
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2004 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Wed, 15 Aug 2007, 01:26:03 EST