Research Projects

The advent of 5G mm-Wave and the upcoming 6G sub-THz communication systems have created an urgent need for advanced antenna technologies capable of supporting ultra-high data rates, wide bandwidths, and efficient beam steering in dynamic environments. Reflectarray antennas have emerged as a promising solution by combining the high gain and wide bandwidth of reflector antennas with the beam-steering capabilities of phased arrays, all while avoiding the mechanical complexity of traditional systems. This hybrid nature makes reflectarrays ideal for high-frequency applications, particularly in the mm-Wave and sub-THz bands, where demands for high data rates and low latency are paramount. Despite their potential, several challenges hinder the widespread implementation of reflectarray antennas for these applications, including miniaturization, material limitations, and achieving efficient beam-steering across wide frequency bands. This proposal aims to address these challenges by designing and developing high-gain, wideband, beam-steerable reflectarray antennas specifically tailored for 5G mm-Wave (n257, 26.5-29.5 GHz/n258, 24.25-27.5 GHz/n259, 39.5-43.5 GHz) and 6G sub-THz (0.1-3 THz) frequency bands. A central focus of the research is solving the critical challenge of beam steering. Traditional reflectarrays use static phase shifts, which limit their adaptability to dynamic environments. To overcome this limitation, this proposal explores electronic beam steering techniques by integrating tunable elements such as varactor diodes, micro-electromechanical systems (MEMS), or liquid crystal technologies. These tunable elements will enable dynamic phase control, facilitating real-time beam steering at mm-Wave and sub-THz frequencies and ensuring optimal link quality in mobile and challenging communication scenarios. The successful development of a high-gain, wideband, beam-steerable reflectarray antenna will represent a significant leap in antenna technology, addressing the critical need for efficient beam steering in high-frequency communication systems. This innovation will enable next-generation mobile networks with unparalleled throughput, ultra-low latency, and robust connectivity. Beyond telecommunications, the advancements from this research will extend to satellite communications, imaging, sensing, and other fields, contributing broadly to the evolution of wireless communication systems. By pushing the boundaries of reflectarray antenna design and performance, this work aims to make a lasting impact on the future of mm-Wave and sub-THz wireless communication, driving progress in 5G, 6G, and beyond.