This study presents the design and the experimental validation of a slot-loaded antipodal Vivaldi antenna for a microwave imaging system to monitor liver microwave thermal ablation. The antenna’s overall dimension is equal to 40mm×65mm, and its working bandwidth goes from 600 MHz up to 3 GHz, with the possibility to operate at a higher frequency. The antenna is designed to operate inside a coupling medium that allows to scale down the antenna dimensions, as well as to improve the coupling of the electromagnetic power to the tissue. The antenna’s S-parameters well agree with the simulation result. Finally, the antenna proposed in this work shows the most compact aperture dimension, as compared with other similar antennas designed for biomedical applications, working within the same bandwidth.
Slot-loaded Antipodal Vivaldi Antenna for a Microwave Imaging System to Monitor Liver Microwave Thermal Ablation / Wang, Mengchu; Costanzo, Sandra; Crocco, Lorenzo; Cavagnaro, Marta. - (2022). (Intervento presentato al convegno 16th European Conference on Antennas and Propagation tenutosi a Madrid, Spagna).