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UWB Vivaldi Antenna Array Lower Band Improvement for Ground Penetrating Radar Applications

Biancheri-Astier, Marc and Diet, Antoine and Le Bihan, Yann and Grzeskowiak, Marjorie UWB Vivaldi Antenna Array Lower Band Improvement for Ground Penetrating Radar Applications. (2019) Radioengineering, 28 (1). 92-98. ISSN 1210-2512

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Official URL: https://doi.org/10.13164/re.2019.0092


This paper concerns a ground penetrating radar system (GPR) presenting beam forming ability. This ability is due to a great flexibility in the emission of wavefronts. The innovative concept is to use an array of antennas which can reconfigure itself dynamically, in order to focus on a desired target. This antennas system can act as a new microwave sensor to detect and characterize buried targets in an inhomogeneous medium which is the case study in various application fields such as geophysics, medical, planetology,... Its electronics are in development with the DORT (Time reversal technique) method integration for optimizing the localization of buried target. This paper aims are to present the antenna optimization used in the GPR applications. Typical antennas used in GPR are generally Vivaldi ones directly on the ground. Especially, in the context of the space mission ExoMars 2020, the radar antenna is set on a mobile station at a distance of about 30 cm from the ground to avoid any contact. However, they are limited by their important size, due to the lowest frequency of their bandwidth. Results of this work concern an increase of the antenna bandwidth by shifting the lower-band limit, making it a UWB type [500 MHz–4 GHz] without changing its size. As low frequency waves can spread deeper into probed medium, this optimization can improve the radar data inversion performances.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Conservatoire National des Arts et Métiers - CNAM (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole de l'Innovation Technologique - ESIEE PARIS (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Other partners > Université Paris-Saclay (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Other partners > CentraleSupélec (FRANCE)
Other partners > Université Paris-Sud 11 (FRANCE)
Laboratory name:
Deposited On:20 Jun 2019 08:35

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