Prof. Yevhen Yashchyshyn
Warsaw University of Technology, Poland
Sub-terahertz properties and applications of composite materials and heterostructures containing graphene
The scientific goal of the presentation is to show properties of the advanced composite materials based on graphene and more. The main research effort will concern the properties of these materials in the sub-terahertz (sub-THz) frequency range, which dramatically lacks functional materials in order to absorb, reflect, or switch in this frequency band. Three types of materials will be shown and their characteristics will be discussed.
The first – the epoxy-based composites with graphene fillers. The composites of 1 mm thickness and graphene loading of 8 wt% provide excellent electromagnetic shielding of 70 dB in the sub-terahertz EHF frequency with negligible energy reflection to the environment. The developed lightweight adhesive composites with graphene fillers can be used as electromagnetic absorbers in the high-frequency microwave radio relays, microwave remote sensors, millimeter wave scanners, and wireless local area networks.
The second – polymer composite films containing fillers comprised of quasi-one-dimensional (1D) van der Waals materials, specifically transition metal trichalcogenides containing 1D structural motifs that enable their exfoliation into bundles of atomic threads. The unique electromagnetic shielding characteristics of these films are attributed to effective coupling of the electromagnetic waves to the high-aspect-ratio electrically-conductive TaSe3 atomic-thread bundles even when the filler concentration is below the electrical percolation threshold. These novel films are promising for high-frequency communication technologies, which require electromagnetic shielding films that are flexible, lightweight, corrosion resistant, electrically insulating and inexpensive.
The third – hybrid semiconductor/graphene/AlGaN/GaN heterostructures. This kind of heterostructures are very promising because of the following unique properties: depending on deposition technology, graphene forms either Schottky barrier or ohmic contacts to AlGaN; the conductivity of graphene can be adjusted electrostatically and the type of the conductivity can be changed from n- to p- type, electrostatically as well; graphene is transparent in the sub-terahertz and terahertz frequency bands; graphene/AlGaN/GaN structures represent a unique system of two closely spaced interacting two dimensional (2D) highly conductive layers with high carriers mobility.
M.Sc. (’79), Ph.D. (’86), D.Sc. (’06), Prof. Title (2015); antennae and antenna array, sub-Terahertz technologies; Professor, Sub-Terahertz Technology Division of Warsaw University of Technology, Head (2020-). Senior Member of IEEE; Member of the Committee on Electronics and Telecommunications Member of the of the Polish Academy of Sciences (2000-); Member of the Microwave and Radiolocation Section and Member of Telecommunication Section of the Electronics and Telecommunication Committee of the Polish Academy of Sciences (’07-); Senior Researcher of The Institute of High Pressure Physics of the Polish Academy of Sciences; Adjunct Professor of Northwestern Polytechnical University, Xi’an, China; TPC and Organizing Committee Member of Conferences: MIKON, TCSET, CADSM; Reviewer of the IEEE Transactions on Microwave Theory and Techniques (’04-), IEEE Transactions on Antennas and Propagation (’06-) and IEEE Microwave and Wireless Components Letters (’04-); Member of Editorial Board of Izwestiya Wuzow Radioelektronika (’09-).
Prof. Felix Yanovsky
National Aviation University, Ukraine
Experience of modeling and signal processing at radar design for remote sensing of environment
In this presentation, I would like to summarize briefly some achievements of our research activity as well as share some best practices. The first researches were directed to design, modernization, tests, and maintenance of airborne weather radar systems for transport and commercial aircraft in 70s and 80s of the 20th century. Then we took part in the research, development and design of modern digital radio electronic systems, basically, digital weather radar and TCAS. The results were implemented and widely used in Antonov, Tupolev, Ilyushin and Yakovlev aircraft, and were awarded with Ukraine State Prize in the field of science and technology for 1996. Since 1996 new experience was associated with joint research with the Delft University of technology. This work was in the field of Doppler-polarimetric radar, first, based on the Delft Atmospheric Research Radar (DARR), and later, a novel Transportable Atmospheric Radar (TARA) was designed and then applied to extensive research on complex signal processing for deriving the important meteorological information. The theory and models for new Doppler-polarimetric approach were developed. Nowadays, instead of DARR, a new PARSAX radar system has been created in TU-Delft. It is mostly software defined, fully polarimetric radar with dual-orthogonal sounding signals that has the possibility to measure all elements of the radar targets polarization scattering matrix simultaneously, in one sweep. Generalized theory of coherent-polarimetric remote sensing of phenomena and object was proposed by us. Other important research works, which is mentioned in the presentation, were fulfilled on UWB systems design for ground penetrating and through-the-wall imaging.
Eng. (M.Sc.) (’68), Ph.D. (’79), D.Sc. (’92), Prof. Title (’94). IEEE: Member (’94), SM (’96), Fellow (2008), Life Fellow (2020). Professor of Electronics, Robotics, Monitoring & IoT Technologies (ERMIT) Department at the National Aviation University, Kyiv, Ukraine. Member of the European Microwave Association (EuMA), EuMA General Assembly member (2004-2007), Editorial Board member and Associate editor of the International Journal of Microwave and Wireless Technologies (EuMA and Cambridge University, UK). Co-Editor of the special issue of the IEEE AES Magazine. Editor-in-Chief of the International Journal of Image, Graphics and Signal Processing (Hong Kong). Founder and Elected Chair (2007-2012) of IEEE Ukraine SP/AES Joint Chapter. Member of the Academic Council on Radio Physics and Microwave Electronics of the National Academy of Science of Ukraine. Chairperson of the IEEE Ukraine Section (2016-2017 and 2020-2021). Founder and Chairman of the MRRS Conference and Co-Chair of many other international conferences. Visiting or Adjunct Professor in: TU-Delft, The Netherlands; PennState University, USA; TUHH, Germany; Al-Balqa Applied University, Jordan; WUT, Poland; Harbin Institute of Technology, China; Hanyang University (Seoul) and Suncheon National University, Republic of Korea; Kenyatta University, Kenya; Kalyani Centre for Technology & Innovation, India.
Dr. Taras Maksymyuk
Lviv Polytechnic National University, Ukraine
How Blockchain and AI is Driving the Future Internet Evolution Beyond 5G?
With the advent of 5G, we have leaped into a new era of digitized society that is ubiquitously connected by a distributed and highly heterogeneous network infrastructure. Beyond 5G will exhibit even more heterogeneity and will likely support applications far beyond anything seen so far, such as virtual and augmented reality (VR/AR), ubiquitous instant communications, pervasive intelligence and the internet of skills. The density of the connected devices will exponentially grow following by even higher densification of the network infrastructure. In order to fulfil unprecedented performance expectations, future mobile networks require fine-grained spectrum allocation and network management underpinned by new economic and legislative mechanisms. This inefficiency forces operators to increase the price for the end users with each new generation of mobile networks due to the expensive license fees for the redundant bandwidth and ever-increasing costs of infrastructure deployment and maintenance. Hence, it is inevitable that operators need to adopt a flexible decentralized business model driven by network virtualization, spectrum and infrastructure sharing, software-defined networking and intelligent automated management. This keynote will explain how the artificial intelligence and blockchain technologies can shape the future internet evolution beyond 5G. Also, some insights and simulations results will be given based on the experience of the author’s team in the development of a highly heterogeneous and atomized network environment.
Taras Maksymyuk received the B.A. degree in telecommunications in 2010, the M.S. degree in information communication networks in 2011, and the Ph.D. degree in telecommunication systems and networks in 2015, all from the Lviv Polytechnic National University. He is currently a Research Professor in the Internet of Things and Software Defined Networks Lab., Lviv Polytechnic National University, Lviv, Ukraine. He did his post-doc fellowship in Internet of Things and Artificial Intelligence Lab., Korea University. He was recognized as the Best Young Scientist of Lviv Polytechnic National University in 2015, received the Lviv State Administration prize for outstanding scientific achievements and contribution in 2016, and Lviv Metropolitan Prize for the best scientists in 2017 and 2019. He is currently an Associate Editor of IEEE Communications Magazine, and an active member of the IEEE Communications Society. His research interests include 5G and beyond wireless communications, spectrum management, blockchain, Internet of Things, Big Data and artificial intelligence. Dr. Maksymyuk is co-author of more than fifty peer-reviewed papers on the 4G/5G wireless communications, software defined networks, cloud computing, deep learning and the Internet of Things.