Active, Nonlinear and Tuneable Metasurfaces for Millimeter-Wave Sensing and Communications LSAS
Principal Supervisor: Dr. Alexey Shitvov
Second Supervisor: Prof. Vincent Fusco
+ Project Description
The artificial electromagnetic materials with properties engineered at wish, also known as metamaterials, have received huge attention in the last two decades due to their unprecedented properties that allow researchers and designers to overcome the proverbial limits imposed by the conventional laws of nature. Although bulk metamaterials were the first media to challenge the diffraction limit and electromagnetic invisibility, recently the concept of two-dimensional metasurfaces has emerged from the idea that the volume homogonesation can be effectively replaced by the controlled surface impedance boundary conditions. The rapid progress has been made in the theory and applications of metasurfaces for manipulating the wave propagation, reflection and polarisation by means of the generalised Snell’s law, which enables novel electromagnetic signal conditioning and antenna structures with enhanced parameters and reduced size. Combining the metasurfaces with nonlinear elements and tuneable materials extended the applications to spatial mixing, high-efficiency energy harvesting, and analog phase conjugation and time reversal for virtually diffraction limitless microwave imaging. Nonlinear metasurfaces have also been suggested as a means of waveform-selective filtering and waveform conversion for novel time-windowed wireless communications.
This project builds upon the established CWI expertise in microwave phase conjugation, FSS, tuneable electromagnetic materials and millimetre-wave communication components and systems. This work will contribute to the development of the unified theory of active, nonlinear and tuneable metasurfaces, and will address critical aspects of their design, synthesis, control and fabrication. The developed technology will enable pioneering solutions for analog and hybrid beamforming / direction finding and sensor arrays intended for large-scale mm-wave antenna arrays for 5G communications, radar and imaging. The candidate is expected to demonstrate excellent knowledge of modern applied electromagnetics and microwave engineering, alongside first-hand experience with design and characterisation of antenna arrays and communication systems.
+ How to Apply
Applicants should apply electronically through the Queen’s online application portal at: https://dap.qub.ac.uk/portal/
+ Contact Details
|Supervisor Name:||Dr Alexey Shitvov|
Queens University of Belfast
+44 (0)28 9097 1736