Optimized antenna array layout in a microwave imaging system for brain stroke monitoring

This paper presents the design of the layout of the radiating part of a microwave imaging system for brain stroke monitoring. The radiating part of the system is constituted by an array of antennas placed tangent to a surface conformal to the upper part of head and the design procedure addresses the positioning and the number of the array elements. To this end, an analysis of the relevant scattering operator is performed, taking into account the limited dynamic of the measurement system and the limited number of implemented antennas. Finally, a preliminary tomographic image of a hemorrhagic stroke obtained with synthetic data is reported.