Abdelrazik Sebak, Ph.D., P.Eng., IEEE Fellow, EIC Fellow
Dr Abdel Razik Sebak is a Tier I Concordia University Research Chair. Before joining Concordia University, he was a professor at the University of Manitoba. He was also with Cairo University and worked with the Canadian Marconi Company on the design of microstrip phased array antennas.
Dr Sebak’s recent research activities cover two streams: Antenna Engineering, and Analytical and Computational Electromagnetics. Applied and sponsored projects include high gain mm-wave antennas; FSS techniques for enhancing antennas performance and for RCS reduction; advanced composite materials for aerospace shielding and antenna applications; microwave sensing and imaging; ultra-wideband antennas; and microwave beamforming. Dr. Sebak’s original research contributions and technical leadership have been extensive and resulted in over 500 publications in prestigious refereed journals and international conference proceedings.
Dr. Sebak is a member of Concordia University Provost’s Circle of Distinction for his career achievements.
FSS techniques for antennas Performance enhancement and RCS reduction
Abdel Razik Sebak
Electrical and Computer Engineering, Concordia University
Recently, there has been increasing interest and rapid growth in millimeter (mm)-wave antennas and devices for use in diverse applications, services and technologies such as short-range communication, future mm-wave mobile communication for the fifth generation (5G) cellular networks, and sensor and imaging systems. Millimeter-wave antenna design is considered as the first step for realizing mm-wave wireless communication and imaging systems. Design requirements for such antennas include highly directional patterns – for long transmission range and high detection sensitivity – and size reduction with a suitable impedance matching bandwidth. This talk will address the market demand for compact high efficient antennas for next generation wireless communications, sensing and imaging systems.
The main part of the talk will focus on investigation and development of frequency selective surface (FSS), related theoretical background and to show diverse applications of periodic structures based on FSSs in millimeter-wave electromagnetic spectrum. The keynote will also discuss several applications including: (a) an approach to enhance circularly-polarized (CP) antenna gain using a partially reflecting FSS superstrate at 30GHz, (b) a linear to circular polarization converter which is based on multilayer FSS slab, (c) use of FSS superstrate for mutual coupling reduction, and (d) a broadband coding metasurface for RCS reduction using FSS structures.