Defence of doctoral thesis in the field of Radio Engineering, M.Sc. Masoud Sharifian Mazraeh Mollaei

M.Sc. Masoud Sharifian Mazraeh Mollaei will defend the thesis "Decoupling methods for radiofrequency antennas in ultra-high-field MRI" on 3 September 2021 at 12 (EET) in Aalto University School of Electrical Engineering, Department of Electronics and Nanoengineering.

Opponent: Prof. Christophe Craeye, UCL, Belgium
Supervisor: Prof. Constantin Simovski, Aalto University School of Electrical Engineering, Department of Electronics and Nanoengineering

The public defense will be organized via remote technology. Follow defence: https://aalto.zoom.us/j/61158208702?pwd=T2x0anhRWmloeFBCSVZUWUNsOCtjdz09
Zoom Quick Guide: https://www.aalto.fi/en/services/zoom-quick-guide

Thesis available for public display at: https://aaltodoc.aalto.fi/doc_public/eonly/riiputus/

Doctoral theses in the School of Electrical Engineering: https://aaltodoc.aalto.fi/handle/123456789/53

Press release:

New generation of magnetic resonance imaging (MRI) scanners, so-called ultra-high field MRI scanners, require tightly special distribution of radio frequency (RF) antennas inside the scanner. Being closely located near each other, RF antennas are highly coupled with neighboring antennas which results in low efficiency and bad image quality. This dissertation shows that using passive structures or redesigning antennas can decouple these antennas. To this goal, the dissertation develops a method for decoupling tightly packed dipole antennas based on passive structures and, decoupling loop antennas by redesigning them based on coaxial cable. Moreover, the possibility of using these techniques for other applications, namely wireless power transfer, is studied. The results prove the multi-functionality of the methods.

Contact information of doctoral candidate