Hermes 3D provides a robust simulation platform tailored for arbitrary 3D structures and antenna designs, offering engineers a powerful tool for comprehensive electromagnetic analysis. This software package excels in FEM simulations, adeptly handling complex geometries and material layering to predict electromagnetic performance accurately. Hermes 3D is particularly beneficial in RF and antenna design applications, enabling engineers to explore spatial and material configurations to optimize performance. The tool supports a wide array of use cases, from wireless communication antenna systems to compact RF modules, ensuring designs meet precise specifications. By simulating electromagnetic fields across varied scenarios, Hermes 3D helps engineers achieve optimal design solutions efficiently, contributing to innovative and reliable product development.