Reducing the Induction Footprint of Ultra-Wideband Antennas for Ground-Penetrating Radar in Dual-Modality Detectors
| Autor: | Wouter van Verre, David J. Daniels, Liam A Marsh, Xianyang Gao, Frank J. W. Podd, Anthony Peyton, John L. Davidson |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
ground-penetrating radar (GPR) multifrequency Acoustics Detector 020206 networking & telecommunications 02 engineering and technology dual modality law.invention Electromagnetic induction Radiation pattern law Ground-penetrating radar 0202 electrical engineering electronic engineering information engineering Eddy current Reflection (physics) magnetic induction spectroscopy Electrical and Electronic Engineering Antenna (radio) Radar metal detection (MD) Bowtie antenna |
| Zdroj: | Van Verre, W, Podd, F J, Gao, X, Marsh, L A, Davidson, J L, Daniels, D J & Peyton, A J 2020, ' Reducing the Induction Footprint of Ultra-Wideband Antennas for Ground-Penetrating Radar in Dual-Modality Detectors ', IEEE Transactions on Antennas and Propagation, vol. 69, no. 3, 9212616, pp. 1293-1301 . https://doi.org/10.1109/TAP.2020.3026909 |
| Popis: | The combination of metal detection (MD) and ground-penetrating radar (GPR) has been successfully deployed to combat the threat from buried antipersonnel landmines. A number of issues arise from the close integration of these two sensing modalities. One issue is the proximity of the metallic GPR antennas to the MD coils, which affects the performance of the MD due to the eddy currents created within the GPR antenna structure. In this article, the effect of traditional solid bowtie antenna design on an MD is investigated, and avenues for the reduction of the eddy currents are explored. Three modifications to the solid bowtie design are proposed and evaluated. This article presents the measurements of the MD response to all four antenna designs using a magnetic induction spectroscopy sensor. It was found that the MD response to the bowtie antenna can be reduced by 91%-98% across the MD operating frequency band, without significantly altering the RF performance, such as reflection and transmission coefficient and radiation pattern. |
| Databáze: | OpenAIRE |
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