Simulation of Space Radiation Model for Multilayer Electret Based Low Frequency Antennas

Low frequency electromagnetic waves, characterized by strong anti-interference capability and high penetrative power, are recognized as excellent carriers for communication. Multilayer FEP/THV based antennas, emerging as an advanced low frequency antennas, offer advantages such as compactness, lightweight design, and high transmission efficiency. Different from other simulations that only focus on increasing the number of layers to enhance radiation intensity, this work utilized COMSOL simulation software to establish a finite element model of multilayer electret based low frequency antennas to further understand the spatial radiation field variations. The simulation results provide the spatial radiation model of the antenna and the primary magnetic induction direction is obtained. Additionally, the investigation explores variations in the radiation intensity of the antenna with differing numbers of layers while maintaining constant total charge density. These findings offer valuable insights for the realization of multilayer multilayer electret based low frequency antenna in the future.