SEMINARS -13 May 2021 - and - 27 May 2021. Talks on Antennas and Radiopropagation
Talks on Antennas and Radiopropagation
1) Dr. Mauro Ettorre
SEMINAR 13 MAY 2021 11:00
Title: Millimeter-Wave Antennas for Next Generation Telecommunications Networks
Abstract:
In this talk, I will describe my research efforts in millimeter-wave antennas for next generation telecommunications networks for high data-rate communication links. Millimeter-wave antennas are key to deploying next generation 5G networks and satellite systems that promise broad bandwidths and smart data links for mobile users. In collaboration with major industrial and academic partners, I recently proposed quasi-optical planar systems as efficient beam formers for multi-beam, wide scanning antennas. Such an approach overcomes the loss and prohibitive cost associated with phased arrays in the millimeter wave range, while preserving the agility of the radiating unit. Low-cost implementations of the proposed system in substrate integrated waveguide (SIW) and low temperature co-fired ceramic (LTCC) technologies will be presented in V and E bands for 5G networks. For satellite links in Ka-band, I will show that these quasi-optical planar systems can be used to drive the focal array of a multi-reflector system. Such a configuration reduces the phase aberrations of multi-reflector configurations for high data rates and wide coverage. For terminal users, I will present some recent activities on wideband wide-angle continuous stub arrays. I will introduce the unique scanning and bandwidth capabilities of such arrays validated by a prototype.
Dr. Mauro Ettorre received a Laurea degree “summa cum laude” in Electrical Engineering and a Ph.D. in Electromagnetics from the University of Siena, Italy, in 2004 and 2008, respectively. Part of his Ph.D. work was developed at the Defence, Security and Safety Institute of the Netherlands Organization for Applied Scientific Research (TNO), The Netherlands, where he later worked as an Antenna Researcher. From 2008 to 2010, Dr. Ettorre was a Postdoctoral Fellow at the Institut d'Electronique et de Télécommunications de Rennes (IETR), Université de Rennes 1, France. In 2010 and 2016, he was a Visiting Scholar in the Radiation Laboratory, Department of Electrical Engineering and Computer Science, University of Michigan. Since October 2010, he is a Research Scientist at the French National Center for Scientific Research (CNRS), within the IETR. In 2014, he assumed responsibilities for the multi-beam antenna activity for satellite applications in the joint laboratory between IETR and Thales Alenia Space, France. In 2015, he was an invited professor at Tokyo Institute of Technology, Japan. Since 2016, he has been member of the French National Committee for Scientific Research, Section 08 (micro- and nanotechnologies, photonics, electromagnetism), CNRS, Paris, France. In 2017, he leads the BEAMS (BEam Antennas up to Mm and Sub-mm waves) team at IETR. Since 2017, he is an Associate Editor for the IEEE Transaction on Antennas and Propagation.
Since 2017, he is a member of the best paper award selection committee for the IEEE Transactions on Terahertz Science and Technology. Dr. Ettorre’s research interests include the analysis and design of leaky-wave antennas, periodic structures, millimeter-wave antennas, non-diffractive radiation, near-field focusing techniques, and wireless power transfer systems. He has authored over 65 journal papers, 169 conference papers, 1 book chapter, and holds 11 international patents on millimeter-wave antenna technology.
Dr. Ettorre received a Young Antenna Engineer Prize at the 2008 ESA Antenna Workshop in the Netherlands, a 2009 French Ministry of Research award for the most innovative project in all natural sciences, a 2012 Starting Grant Award from the city of Rennes, France, a Young Investigator Award from the French National Research Agency in 2014, the 2016 CNRS Award for Scientific Excellence, France, the Innovation Award at 2018 ESA Antenna Workshop in the Netherlands and the Best Paper Award in Electromagnetics and Antenna Theory at the 2018 European Conference on Antennas and Propagation (EuCAP), London, UK.
Dr. Mauro Ettorre, IETR-CNRS (University of Rennes 1, France)
SEMINAR 13 MAY 2021 11:00
Link:
2) Dr. David González-Ovejero
SEMINAR 27 MAY 2021, 11:00.
Title of the Talk: Millimeter and sub-millimeter wave modulated metasurface antennas for space.
Abstract:
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 transformed 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: 26/04/2021