Sean Hum

Advanced electromagnetic surfaces (AESs) comprise a spectrum of artificially engineered surfaces for manipulating the temporal and/or spatial dispersion of electromagnetic waves, and include structures such as reflectarrays, transmitarrays, frequency selective surfaces, polarizers, and most recently, electromagnetic metasurfaces. This talk will introduce how AESs are designed and characterized at a high level, and discuss ways in which their capabilities can be harnessed for various telecommunication and sensing applications in the microwave and mm-wave range. A selection of AES designs will be presented, including experimental demonstrators of frequency-selective surfaces, multi-band polarizers, and beam-forming surfaces in the form of reflectarrays and other multifunction apertures for aerospace applications. Reconfigurable surfaces and their capabilities will also be highlighted, with particular emphasis on possible applications in in satellite missions, as reconfigurable intelligent surfaces, and radio astronomy.

Biography:

Sean Victor Hum received the B.Sc., M.Sc., and Ph.D. degrees in electrical and computer engineering from the University of Calgary, Canada, in 1999, 2001, and 2006, respectively. In 2006, he joined The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto (UofT), Canada, where he is currently a Professor and the Eugene V. Polistuk Chair in Electromagnetic Design. In 2014 he was a visiting scientist with the European Space Agency at ESTEC, in Noordwijk, The Netherlands, and then a visiting professor at Universidad Politécnica de Madrid (UPM). He was the Associate Chair, Graduate Studies in the same department, from 2018-2021. He leads the RADIANCE laboratory, and along with his students, conducts research in the areas of advanced electromagnetic surfaces, reconfigurable antennas, and antennas for space applications. His recent work in aerospace antennas has been supported by numerous industry partners, including MDA, Thales, and Kepler Communications, as well as the European Space Agency. He received the ASTech Leaders of Tomorrow Award in 2006, and the Early Researcher Award from the Government of Ontario in 2012. He has received seven teaching awards at the UofT, including the Northrop Frye Award in 2024. He was a co-recipient of the IEEE Antennas and Propagation Society R. W. P. King Award in 2015 and 2017. He was an Associate Editor of the IEEE Transactions on Antennas and Propagation from 2010-17.

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