This chapter presents the design and simulation of a novel hexagonal-shaped fractal ultra-wideband (UWB) antenna intended for wearable applications. The hexagonal geometry is selected for its compact size, wide impedance bandwidth, and stable radiation characteristics, crucial for wearable devices. The proposed antenna is simulated using the HFSS environment with a foam substrate characterized by a dielectric constant of 1.07 and a thickness of 2 mm. The antenna exhibits excellent performance over a broad frequency range from 2 to 13.9 GHz, achieving multiple resonant frequencies. The simulation results demonstrate a maximum gain of 7.5 dB at 12 GHz and a return loss |S11| of −28.44 dB, indicating efficient impedance matching. This antenna design shows great potential for integration into wearable systems, providing reliable communication over UWB frequencies with minimal interference. This flexibility ensures the antenna can be integrated into wearable technology for applications such as health monitoring, body-centric communications, and wireless sensor networks.