Analysis of characteristics of a slot antenna used in georadar

Druchinin, S. V.

doi:10.1109/aem.1996.872867

Cited by 1 publication

(1 citation statement)

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“…As an example, a magnetic dipole slot antenna is used by Sato [9] to provide a crosspolarized receive antenna for borehole radar. A slot antenna is also considered by Druchinin [10] for GPR that has an optimized "front to back" radiation pattern ratio by the use of a resistive material. Both these antenna types can be conceptualized as two adjacent current loops.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Magnetic Antennas for Ground Penetrating Radar

Bellett¹,

Leat²

2003

PIER

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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.

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Section: Introductionmentioning

confidence: 99%