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

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dc.contributor.authorBiancheri-Astier, Marc
dc.contributor.authorDiet, Antoine
dc.contributor.authorLe Bihan, Yann
dc.contributor.authorGrzeskowiak, Marjorie
dc.coverage.issue1cs
dc.coverage.volume28cs
dc.date.accessioned2020-04-23T06:56:43Z
dc.date.available2020-04-23T06:56:43Z
dc.date.issued2019-04cs
dc.description.abstractThis 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.en
dc.formattextcs
dc.format.extent92-98cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2019 vol. 28, č. 1, s. 92-98. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2019.0092en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/186834
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2019/19_01_0092_0098.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectGround Penetrating Radar (GPR)en
dc.subjectUltra Wideband (UWB)en
dc.subjectVivaldi antennaen
dc.titleUWB Vivaldi Antenna Array Lower Band Improvement for Ground Penetrating Radar Applicationsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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