Characterization of Microwave's Antennas for Intracardiac Ablation Frequencies 915 and 2450 MHz

This paper studies the microwave antenna characterization in intracardiac ablation for frequencies 915 and 2450 MHz. The theoretical study is validated by experimental measurements in vitro on electromagnetic phantom muscle tissue. The Specific Absorbed Rate (SAR) measurement setup is described. Two types of antennas have been designed, implemented and used, a monopoly antenna and a helical antenna. The Specific Absorbed Rate (SAR) and the measured reflection coefficient (S11) were obtained for antennas for the two frequencies. We show that each frequency can be adapted to a region where the ablation is necessary. According to the doctors, the goal is to have a lesion on the surface as the atria or in depth.