Research visit: Exploring broadband metasurfaces and antenna design in Sweden and Spain

In the past year I have had the opportunity to visit two research groups: in KTH Royal Institute of Technology (Stockholm, Sweden) and University of Seville (Spain), with whom I work very closely.

First I spent February in Stockholm working with Professor Quevedo-Teruel, who is a leader in the development of broadband metasurfaces that make use of a special class of symmetries. We developed a method to extend the broadband behaviour to systems that don’t have such special symmetries, with special application to coplanar waveguide technology (which strictly forbids any special symmetry between the two lines). This work has led to the submission of two journal articles currently in review.

The possibility of visiting another research group which is more engineering-oriented has helped me broaden my vision of metamaterials and to be confident to apply my knowledge to the design of antennas.

Later, in June I spent four weeks visiting my collaborators at the Microwave Group in Seville, where we worked on extending our highly efficient analysis tool for the design of slot arrays to include the presence of multi-layered dielectrics. We finished a piece of work that has been now submitted to Optics Express and we are preparing the submission of two more journal articles. This design tool has already caught the attention of transmitarray antenna practitioners which may lead to new future collaborations.

I consider the chance of visiting other research groups to be crucial for the development of my career. Although sometimes stressful due to the time constraints, they have meant a huge increase in my outputs and experience and I have no doubt they will be essential for my future in academia and my relationship with industry. I am very lucky to have the support of the CDT and my supervisors to spend so much time learning from others to then contribute to my research group and my cohort.