Spiral antenna design for microwave hyperthermia: A preliminary numerical investigation

A two-arm Archimedean spiral antenna is numerically designed and investigated for the potential use in microwave hyperthermia treatment. A six-element annular phased array of such antennas is placed around a cylindrical muscle phantom. Point-wise specific absorption rate (SAR) is computed inside the phantom with variable phase settings among the elements of the array in order to observe hotspot and null formation within the irradiated phantom volume.