Advanced Female Body Model and Its Exposure to a 26 GHz Wearable Antenna

The increasing adoption of millimeter wave frequencies in modern communication systems and emerging biomedical technologies calls for a detailed characterization of their interaction with human tissues, particularly in the context of wearable devices. This paper presents a computational analysis of the interaction between a 26 GHz wearable patch antenna for mmWave based WPT applications and a detailed female chest model. Two anatomical virtual models are considered: Ella and Venus, developed to more accurately represent the breast shape and thoracic curvature in an upright posture. The study focuses on the electric field distribution and the absorbed power density (APD) in superficial tissues, and compares the results obtained with the two models under identical exposure conditions. The analysis shows that differences in thoracic morphology alone do not impact the radiation behavior of the patch, however it leads to measurable variations in local field levels and power deposition inside the skin and breast tissues. These findings underline the importance of anatomically refined models that reproduce realistic standing postures when assessing the interaction between millimeter wave wearable antennas and the human body.