Tutorial (1/2 day):
„High-Efficiency RF and Microwave Power Amplifiers: Historical Aspect and Modern Trends”
- Polyharmonic Class-F and inverse Class-F power amplifiers (1 hour)
- Switchmode Class-E power amplifiers (1 hour)
- High-efficiency Doherty amplifier architectures (1 hour)
Andrei Grebennikov received his Dipl. Eng. degree in radio electronics from the Moscow Institute of Physics and Technology, Moscow, Russia, in 1980, and Ph.D. degree in radio engineering from the Moscow Technical University of Communications and Informatics, Moscow, Russia, in 1991. He obtained a long-term academic and industrial experience working with the Moscow Technical University of Communications and Informatics, Moscow, Russia, the Institute of Microelectronics, Singapore, M/A-COM, Cork, Ireland, Infineon Technologies, Munich, Germany, and Linz, Austria, Bell Labs, Alcatel-Lucent, Dublin, Ireland, and Microsemi, Aliso Viejo, California, as an Engineer, Researcher, Lecturer, and Educator. He has lectured as a Guest Professor with the University of Linz, Linz, Austria, and presented short courses and tutorials as an Invited Speaker at the IEEE Microwave Theory and Techniques Society (MTT-S) International Microwave Symposia (IMS), European and Asia-Pacific Microwave Conferences, the Institute of Microelectronics, Singapore, Motorola Design Centre, Penang, Malaysia, the Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia, and the Aachen Technical University, Aachen, Germany. He has served as a Co-Chair of the IEEE Topical Conference on Power Amplifiers for Radio and Wireless Applications (PAWR) in 2016-2017. He is an author and coauthor of more than 100 papers, holds 25 European and US patents and patent applications, and authored eight books dedicated to RF and microwave circuit design. Currently he has been with Sumitomo Electric Europe, UK.
„Aperture Synthesis in Radar Technologies: Geometries, Models and imaging Algorithms”
Synthetic Aperture Radar and Inverse Synthetic Aperture Radar (SAR/ISAR) systems are powerful instruments for monitoring and imaging of stationary and moving objects during throughout the day and all weather conditions. Range resolution is achieved by using high informative wideband frequency emitted signals subjected to compression. Cross-range or azimuth resolution is achieved by aperture synthesis.
The main topics under consideration:
- SAR/ISAR/BSAR geometry and kinematics description.
- SAR/ISAR/BSAR signal formation and image reconstruction as direct and inverse spatial transforms: analytical description.
- SAR/ISAR/BSAR signal modeling and imaging algorithms – numerical experiments.
- ISAR software system: blocks, functionalities (Matlab – Simulink implementation).
Prof. Andon Dimitrov Lazarov has received the M.S. degree from Sankt Petersburg Electrotechnical State University, Russia (LETI), in Electronics Engineering, Candidate of Sciences (PhD) degree from Minsk Air-Defence Military Academy, Belarus and Dr.Sc. degree from Shumen Artillery and Air Defense University. From 1984 he is Associate Professor and from 2000 to 2002 he is a Professor with the Air Defence Department of the Artillery and Air-Defence University with teaching courses: Radio Circuits, Electrodynamics, Antennas and Propagation, Microwave systems, Air-defense System. From 2002 he is a Professor in Burgas Free University. Since 2016 he is Adjunct Professor with K.N. Toosi University in Tehran. He teaches Discrete Mathematics, Coding theory, Antennas and Propagation, Communication circuits, DSP, Mobile Communications, Operating systems. His scientific interests are in the scope of Synthetic Aperture Radar (SAR) and Inverse Synthetic Aperture Radar (ISAR), Interferometric SAR, and Bistatic SAR modeling and parametric and non parametric signal processing. He has authored above 200 research journal and conference papers. He is a member of IEEE, AES Society of USA, and a member of Trans Black Sea Region Union of Applied Electromagnetism of Greece and a guest-editor of special issue on ISAR signal processing of IET Journal, Great Britain and Canada. He is a member of editorial and reviewer boards of many international journals in USA, Canada, China, Pakistan and Greece. For advancement in Digital Avionics he has been awarded with the David Lubkowski Award by IEEE and AIAA – USA.
„5G Key Technologies:
What They Have to Do With Antennas?”
What is the 5th generation (5G) wireless communication? Nobody could tell us an exact definition at present. However, some emerging and potential technologies have attracted more and more attention. Of which, massive MIMO, millimetre wave, Beamforming, Full Duplex technologies are considered to be the key technologies for 5G wireless communications. Traditionally, the antenna in mobile communication systems is a passive element and generally is separated from the RF transceivers. To design the future antennas for mobile terminals, not only the bandwidth and antenna efficiency need to be acceptable, but also beam pointing and beam coverage is essential knowledge of the mobile channel. It is expected that the antennas or the antenna system will be adaptive. Moreover, the antennas or the system should not only cover the new frequency bands but also can be tightly integrated with the existing systems (4G) and evolutions of the 4G system primarily at the conventional sub-6 GHz bands. Several structures are available for designing multiband antenna such as planar inverted-F antenna (PIFA), monopole antenna and slot antenna etc. For example, by using monopole element, multiple resonances can be excited to cover large bands with reasonable system size. Moreover, at either lower microwave band or millimetre wave band, the antenna will be seamlessly integrated with RF transceivers and even with RoF or ADC (DAC) and E/O (O/E). Nowadays, for instance, mobile phones are required to be thin, elegant and have metal body along with other electrical requirements such as supporting multiple radios, large battery, high resolution display and camera etc. Several multiband antennas are required with sufficient isolation between them to support multiple radios and are essential for multifunctional devices. Therefore, the antenna for 5G communication systems will have distinct characteristics compared to traditional antennas. The tutorial will focus on the recent research advances in 5G antennas in interaction with the 5G Key technologies ingredients. It will be a good opportunity for students, professors and researchers in the field to brainstorm on and to identify the antenna’s requirements to satisfy the 5G key emerging technologies.
Youssef El Gholb
He received a M.SC in Computer Science, Electronic and Electrical Engineering, and a M.Eng in Telecommunications and Microwave Devices at the faculty of science and Technology of Moulay Ismail University, Errachidia and University Sidi Mohamed Ben Abdellah, Fez, Morocco, respectively in 2010 and 2013. He was a teacher of French language (2009-2010) and physics (2010-2012), Moroccan Ministry of Education. He was a research engineer at Waterford Institute of Technology, Ireland (2012-2014) and PhD.Eng. He was a PhD student in Electronics, Telecommunications and Information Technology at University of Bologna, 2014-2017. He received the most competitive and prestigious scholarships for the best North African students (Morocco, Algeria, Tunisia and Egypt) to study in Europe, Averroes scholarship 2012 and EU Metalic Erasmus Mundus Scholarship in 2014. His research interests are in wireless and satellite communications, estimation and synchronization algorithms, Interference Management Techniques, Multiuser Detection, RF and Microwave. He was involved, on both technical and management side, in several international research projects on satellite communication systems, supported by ESA. Now, he is a researcher at the Institute of Telecommunication, Coimbra, Portugal and University Sidi Mohamed Ben Abdellah, Fes, Morocco.