Enhancing the performance of communication systems in the high-frequency regime

For his PhD research Gabriele Federico successfully challenged the fundamental constraints of phased arrays and introduced several novel techniques that closely approach the ideal scan performance. The use of multi-mode antennas appears to be a pivotal approach for surpassing this limitation by a synergistic control of distinct radiating modes and the results of this thesis prove that. This research marks a significant step towards enhancing the performance of communication systems in the high-frequency regime. Federico defended his thesis at the department of Electrical Engineering on November 28th.

The demand for wireless data is skyrocketing, propelling a shift towards millimeter-wave frequencies. These high-frequency bands offer wider bandwidths and smaller antenna sizes, fostering higher data rates and compact device integration. However, the mm-wave spectrum introduces challenges like susceptibility to signal blockage and increased propagation losses. To mitigate these, phased-array configurations and dense network deployments are proposed. Overcoming the traditional constraints of limited scanning range, this research highlights the use of multi-mode antennas, broadening the field of view while minimizing unwanted grating lobes.

Novel techniques to characterize dielectric materials

Furthermore, the study addresses the crucial need for accurate dielectric material characterization at these frequencies, proposing novel techniques for measuring relative permittivity.

Title of PhD thesis: ‘Multi-Mode Antennas and Beyond: Extending the Scan Range of Phased Array Antennas for Improved Wireless Sensing and Communication’. Supervisors: prof.dr.ir. Bart Smolders, and dr. Diego Caratelli.