An Impedance Surface-Based Method for Reflectarray Antenna Design

Tony Liang

Electromagnetics Group (Prof. Hum), University of Toronto

Abstract:

Reflectarray antennas constitute a popular architecture for designing low-profile, thin and lightweight reflector antennas. They can be made frequency agile, electronically steerable and capable of real-time beamforming. However, reflectarrays typically suffer from narrow bandwidth; in fact, there is no known upper limit on the bandwidth.

In this talk, a framework is presented that allows for the derivation of the maximum possible bandwidth of an impedance surface applicable to design reflectarrays and transmitarrays. After developing the framework, it's applicability is evaluated by designing reflectors with maximum bandwidth. This talk will focus explicitly on theory.

Biography:

Tony received his BASc and MASc degrees in Electrical and Computer Engineering from the University of Toronto in 2008 and 2010, respectively. He is currently pursuing a PhD degree with the Electromagnetics Group, where his research includes UWB beamforming networks, UWB channel characterization, frequency agile antennas, transformation optics, and wideband reflector surfaces/reflectarrays.