Investigation on the Conducted Electromagnetic Susceptibility of a Typical CAN Communication Link

This study investigates the electromagnetic susceptibility of a typical two-node CAN communication link under five types of conducted interference signals, including continuous-wave (CW), amplitude-modulated (AM), frequency-modulated (FM), and pulse-amplitude-modulated (PAM) signals with different duty cycles. Susceptibility thresholds were determined based on both the signal generator output power and the interference signal power on the bus. Experimental results indicate that while the CAN communication link does not exhibit significant time or bandwidth dependence, PAM signals with specific duty cycles and AM signals at higher frequencies induce greater interference. These findings provide insights into the electromagnetic robustness of CAN networks and offer a reference for improving their resilience in complex environments.