Tutorial 1 (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.
- 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 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.
„Noise in Linear Circuits”
The tutorial will address both theoretical and specific technical concepts encountered in the analysis, measurement and design of linear noisy circuits. Although the material to be presented can be found in many published books and papers, it is usually broadly scattered and not necessarily presented in orderly sequence. It will cover tutorial exposition of some key physical and network theoretic ideas as applied to practical models, circuits and measurement methods. It is therefore addressed to those interested in developing a good understanding of noise in microwave devices and circuits. The subjects to be covered are as follows:
1) Physical sources of noise
- 1/f noise
- Noise representation of 1-port networks
3) Noise measurement
- Y-factor measurements–noise sources and calibrations
- Noise parameter measurements of two ports
- Most used methods of noise parameter measurements
- Noise standards and accuracy of noise measurements
5) Low-noise amplifiers
- Fundamental considerations
- Designs for simultaneous noise and gain match
2) Noise analysis of linear networks
- Twiss’ theorem
- Noise parameters of passives
- Noise representation in multiport networks; noise parameters
- Noise figure, noise temperature, noise measure, Friis’ formula
4) Noise models of microwave transistors
- Field effect transistor noise models
- Bipolar transistors (including HBT) noise models
- Allowable values of noise parameters for transistors
- Experimental validation
- Limits on allowable values of noise parameters of transistors
- Limits on achievable noise temperature of field effect transitors
6) Miscellaneous topics (time permitting)
- Mixer as linear noisy two port
- Introduction to radiometry
Marian W. Pospieszalski was awarded the M.Sc. and D.Sc. degrees in electrical engineering from the Warsaw Institute of Technology, Warsaw, Poland, in 1967 and 1976, respectively.
From 1967 to 1984, Dr. Pospieszalski was with the Institute of Electronics Fundamentals, Warsaw University of Technology (WUT), during which time he held visiting positions with the Electronics Research Laboratory, University of California at Berkeley (1977-1978), the National Radio Astronomy Observatory (NRAO), Charlottesville, VA (1978-1979), and the Department of Electrical Engineering, University of Virginia, Charlottesville, VA (1982-1984). Since 1984, he has been with the NRAO Central Development Laboratory, presently as Scientist with tenure. While on leave during 2001-2002, Dr. Pospieszalski was Chief Scientist-Microwave at Inphi Corporation, Westlake Village, CA. His research interests are in the fields of microwave, millimeter-wave, and high-speed circuits and systems.
Dr. Pospieszalski has authored or co-authored over hundred journals and conference papers. He has been a member of the IEEE Transaction on Microwave Theory and Techniques (MTT) Editorial Board since 1987 and Proceedings of IEEE Editorial Board since 2013. Since 1992, Dr. Pospieszalski has been a member of the IEEE MTT Society Technical Committee on Microwave Low-Noise Techniques, serving as Chair of that Committee from 2001-2004. He has also been a member of the Technical Program Committee of the International Microwave Symposium since 1992, a member of URSI Commissions D and J, and has served as a reviewer for many journals.
Dr. Pospieszalski was elected Fellow of IEEE in 1992. He received the NRAO Distinguished Performance Award in 2002, Distinguished MIKON Contributor Award in 2004 and the Microwave Application Award from IEEE MTT Society in 2006.