This document presents the design and validation of an applicator conceived for hyperthermia treatment of the melanoma in the human male torso and female leg. The applicator consists of an antenna array operating in the 5.8GHz ISM band immersed in an interface layer. The resulting device is comfortable to wear by the patient, low-cost and easy to store and handle. Simulation is carried out using Sim4Life and the ViP 3.0 human model, and the results demonstrate correct energy delivery to the tissue under treatment.