Electromagnetic Compatibility Analysis and Optimization of Electronic Device based on Metamaterials

In this paper, the sources of electromagnetic interference (EMI) in electronic device is analyzed. Resonance analysis and decoupling of printed circuit board (PCB) are carried out through simulation software, and the EMI on PCB is optimized. The combination of metamaterial structure and electromagnetic shielding further optimizes the electromagnetic compatibility (EMC) of electronic device. The simulation results validate the proposed analysis and optimization method. Compared with before the shielding design, the proposed electromagnetic shielding method can reduce the electric field radiation intensity of the electronic device by 3. 75dB on average in the low frequency band. In the high frequency band, the radiation intensity can be reduced by 16.4dB at the maximum.