Warsaw University of Technology, Poland

Biography: Yevhen Yashchyshyn (M'96–SM'09) received the M. Sc. degree from Lviv Polytechnic National University, Lviv, Ukraine, in 1979, the Ph.D. degree from Moscow Institute of Electronics and Mathematics (MIEM), Moscow, Russia, in 1986, and the D.Sc. (Habilitation) degree from the Warsaw University of Technology (WUT), Warsaw, Poland, in 2006. He received professor title in 2016. Since 1999, he has been with the Institute of Radioelectronics (IR), WUT, where he became the Head of the Antenna Laboratory in 2002. From 2009 to 2016, he was the Head of the Radiocommunication Division, WUT. Since 2016, he has been the Deputy Director for Research of IRiTM, WUT. He has authored over 200 technical papers, authored or coauthored 4 books, and holds a few patents. His current research interests include antenna theory and techniques, smart beamforming, reconfigurable antennas, radio over fiber techniques, and materials characterization, including ferroelectric ceramic-polymers composites investigation up to subterahertz frequency. He participate in two European project H2020: Convergence of Electronics and Photonics Technologies for Enabling Terahertz Applications and Innovative Optical/Quasioptical Technologies and Nano Engineering of Anisotropic Materials for Creating Active Cells with Substantially Improved Energy Efficiency. Prof. Y. Yashchyshyn has been coordinator of many National and International Projects. He was the recipient of the First Prize of EuMA at the 11th European Microwave Week for his outstanding research and new concept of the reconfigurable antenna, Amsterdam, The Netherlands, 2008. He is a member of program committees of some periodic international and national conferences, e.g. MIKON, TCSET, KKRRiT. Senior Member IEEE, Member European Microwave Association (EuMA), and European Association on Antennas and Propagation (EurAAP). Member Sections of Microwave and Radiocommunications, and Telecommunications, Electronics and Telecommunications Committee Polish Academy of Science. Reviewer of IEEE Trans. Microwave Theory and Techniques, IEEE Microwave and Wireless Components Letters, IEEE Trans. on Antennas and Propagations e.t.c.
http://www.ire.pw.edu.pl/anteny/?lang=en

Speech Title: Capabilities and limitations of 4D antenna arrays in MIMO applications

Abstract: The time modulated antenna array (TMAA) or 4D (four-dimensional) antenna array introduces time as an additional degree of freedom in antenna beamforming. Periodical on/off switching applied to each element of the array leads to generation of sidebands which are suitable for multi-channel transmission and smart beamforming. One of the most significant limitations of the TMAA is the narrow bandwidth, which can be improved with fast switches. In this paper a current state of the art of TMAA prototypes is presented. Moreover, the TMAA with lossless switching network was used as a receiving antenna in 2x2 multiple-input multiple output (MIMO) system. Different scenarios of time modulated beam-scanning MIMO (BS-TM-MIMO) were investigated to improve performance of the system.