Seminar 27 May 2021 h. 11.00: Millimeter and sub-millimeter wave modulated metasurface antennas for space
Significant efforts have been carried out recently to develop compact high-gain antennas for space. Among the most noteworthy solutions, one can find deployable reflectarrays and meshed deployable reflectors. Despite the elegance of deployable antennas, the risk associated to the deployment of both the feed and the mesh reflector or the reflectarray panels calls for alternative solutions. One possibility to get rid of the reflector deployment consists in integrating planar antennas on the spacecraft chassis. Another desirable characteristic lies in having the source on the aperture plane, so one can also eliminate the need of deploying the feed. Along these lines, modulated metasurfaces antennas have sprung up as very promising route to explore. In these antennas, a dominantly transverse magnetic (TM) surface-wave with planar o cylindrical wave-front is gradually transform into a radiating (leak) mode. This transformation is achieved owing to the interaction of the SW with a periodically modulated impedance surface. In this presentation, some recent developments on modulated metasurface antennas for space will be presented. More precisely, we will focus on modulated metasurface antennas for Deep Space Communications and for sub-millimeter wave radio-astronomy instruments for planetary science.
David González-Ovejero (S’01–M’13–SM’17) was born in Gandía, Spain, in 1982. He received the M.S. degree in telecommunication engineering from the Universidad Politécnica de Valencia, Valencia, Spain, in 2005, and the Ph.D. degree in electrical engineering from the Université catholique de Louvain, Louvain-la-Neuve, Belgium, in 2012. From 2012 to 2014, he was a Research Associate with the University of Siena, Siena, Italy. In 2014, he joined the Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, where he was a Marie Curie Post-Doctoral Fellow. Since 2016, he has been a tenured researcher with the French National Center for Scientific Research (CNRS), Institut d'Electronique et des Technologies du numéRique (IETR), Rennes, France. His current research interests include computational electromagnetics, large phased arrays, periodic structures, metasurfaces and submillimeter wave antennas.
Dr. González-Ovejero was a recipient of a Marie Curie International Outgoing Fellowship from the European Commission 2013, the Sergei A. Schelkunoff Transactions Prize Paper Award from the IEEE Antennas and Propagation Society in 2016, the Best Paper Award in Antenna Design and Applications at the 11th European Conference on Antennas and Propagation in 2017, and the Best Paper Award in Electromagnetics at the 15th European Conference on Antennas and Propagation in 2021.
Since 2019, he has been an Associate Editor of the IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION and the IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY.
Data di pubblicazione: 25/05/2021