Plenary Lectures
ENERGY sustainability for Net ZERO Radio Communications
Nuno Borges Carvalho (Departamento de Electrónica, Telecomunicações e Informática, Instituto de Telecomunicações, Universidade de Aveiro, Portugal)
Abstract
Energy is central to all our activities, especially now, as electricity is needed for basic human survival. Nevertheless, the resources are limited. On certain occasions, we need to rely on the opportunity to have specific energy availability and energy on demand so that sensors, emergency communications, and ICT will continue to operate even if the energy grid is not there.
This talk will discuss the electricity generation problem and how to cope with the huge demand for ICT (Information Communication Technologies) technologies. We will address new paradigms for radio communications and alternatives to make energy available when needed and where needed. It is expected that Net Zero Radio alternatives will be available on the market in the future.
Biography
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Nuno Borges Carvalho was born in Luanda, Angola, in 1972. He received his Diploma and Doctoral degrees in electronics and telecommunications engineering from the University of Aveiro, Aveiro, Portugal, in 1995 and 2000, respectively. He is currently a Full Professor and a Senior Research Scientist with the Institute of Telecommunications, University of Aveiro, the director of the Department of Electronics, Telecommunications and Informatics at UA, and an IEEE Fellow. He coauthored Intermodulation in Microwave and Wireless Circuits (Artech House, 2003), Microwave and Wireless Measurement Techniques (Cambridge University Press, 2013), White Space Communication Technologies (Cambridge University Press, 2014) and Wireless Power Transmission for Sustainable Electronics (Wiley, 2020). He has been a reviewer and author of over 400 papers in magazines and conferences. He is the Editor in Chief of the Cambridge Wireless Power Transfer Journal, an associate editor of the IEEE Microwave Magazine, and former associate editor of the IEEE Transactions on Microwave Theory and Techniques and IET Microwaves Antennas and Propagation Journal. He is the co-inventor of six patents. His main research interests include software-defined radio front-ends, backscatter communications, wireless power transmission, nonlinear distortion analysis, and measurements in microwave/wireless circuits and systems. He has been involved in the design of dedicated radios and systems for newly emerging wireless technologies. Dr. Borges Carvalho is a member of the IEEE MTT ADCOM, the past chair of the IEEE Portuguese Section, TC-20 and TC-11, and also belongs to the technical committees, TC-25 and TC-26. He is also the Chair of the URSI Commission A (Metrology Group). He was the recipient of the 1995 University of Aveiro and the Portuguese Engineering Association Prize for the best 1995 student at the University of Aveiro, the 1998 Student Paper Competition (Third Place) of the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) International Microwave Symposium (IMS), and the 2000 IEE Measurement Prize. He is a Distinguished Lecturer for the RFID Council and was a previous Distinguished Microwave Lecturer for the IEEE Microwave Theory and Techniques Society. In 2023 he is the IEEE-MTT President. |
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Active removal of orbital debris by induced hypervelocity impact of injected dust Grains
Gurudas Ganguli (Plasma Physics Division - Naval Research Laboratory, Washington DC 2035)
Abstract
Collisions of an active satellite with a small (1mm – cm) hard-to-track orbital debris can be mission ending. It has been established that we are at the tipping point for collisional cascade of larger objects to exponential growth of small orbital debris. This will make access to near-Earth space hazardous without first clearing the existing debris from this region. While there are concepts for removing larger debris objects, the more numerous (millions) smaller debris are difficult to eliminate by precision targeting one at a time. We present a concept for elimination of swarms of small debris by deploying micron scale dust to artificially enhance the drag on the debris. The key physics that makes this technique viable is the possibility of large momentum boost realized through hypervelocity dust/debris collision. By deploying high mass density micron scale dust in a narrow altitude band temporarily it is possible to artificially enhance drag on debris spread over a very large volume to force rapid reentry. By synchronizing the dust and debris orbit decay rates a narrow dust layer can be used as a net to capture and force reentry of numerous small debris objects simultaneously. The injected dust will also
reenter the atmosphere leaving no permanent residue in space.
Biography
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Dr. Ganguli is the Senior Scientist for Intense Particle Beams and Plasma Processes in the Plasma Physics Division, Naval Research Laboratory (NRL). Prior to this appointment he was the Head of the Space Analysis and Applications Section, Plasma Physics Division. He has a broad range of experience in plasma processes including beam-plasma interactions, plasma turbulence, dusty plasma dynamics, laser-produced plasma expansion, and high energy density physics in hypervelocity impact of projectiles in space. His work has addressed both natural plasmas as well as induced disturbances in the near-earth space environment. He has developed space defense applications including (i) rapid remediation of pumped radiation belts, and (ii) elimination of small orbital debris, which are necessary for the protection of critical on-orbit space assets. His research has motivated a number of laboratory and space experiments. He has led several ONR/NRL, DTRA, DARPA, Air Force and NASA sponsored research programs involving beam-plasma interactions in ionospheric and magnetospheric plasmas as well as negative ion and dusty plasmas. He has authored/co-authored more than 180 publications. He is the recipient of 2014 E. O. Hulburt Award for science, several NRL Berman Awards for excellence in research publications, 2014 Edison Award for patent on a novel technique to de-orbit small orbital debris, and 2010 Technology Transfer Award. He was a member of the NRL Invention Evaluation Board and ONR panel member to upgrade the Navy S&T strategy plan in 2011 - 2012. He has been the thesis advisor for a doctoral and a masters dissertation and member of several thesis committees for doctoral and masters candidates. He was the Chairman of the International Union of Radio Science, Commission H (US National Chapter), during 2002 – 2005. He is a Fellow of the American Physical Society, Adjunct Professor of Physics at West Virginia and Auburn Universities, and a member of the American Geophysical Union. He has given over 100 invited talks at various national and international institutions and was appointed by the American Physical Society as a Distinguished Lecturer in Plasma Physics for 2001 –2002. |
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