Preliminary Investigation of Electromagnetic Compatibility Analysis for Magnetic Resonance Human Body Communication

This paper presents a preliminary exploration of the electromagnetic distribution and electromagnetic compatibility issues related to Magnetic Resonance Human Body Communication (MR-HBC) technology. Through the design of magnetic resonant coils and finite element simulation analysis, the distribution of magnetic field strength and current density within the human body was evaluated. The results indicate that both the magnetic field strength and current density decrease logarithmically as the depth within the body increases (from 10 mm to 150 mm). Notably, high coupling strength remains relatively stable within a depth of 50 mm. Further analysis confirms that the induced currents in MR-HBC are dominated by variations in the magnetic field, exhibiting the volume conductor characteristics of human tissue under specific conditions. MR-HBC technology demonstrates excellent electromagnetic biocompatibility, with current density at operational frequencies well below safety limits, thereby providing a safe foundation and theoretical basis for the application of implanted and wearable medical devices.