Investigation of Possible EMC Interferences between Multi-Gig Communication Link and RF Applications in Vehicle

Implementation of fully automated vehicles, car2-car, car-2-x, and advanced driver assistance systems requires a high-speed and reliable network. Automotive Ethernet technology is the suitable platform, which will provide data rates up to 10 Gbps. To ensure the safety of these gigabit networks the electromagnetic compatibility (EMC) investigations play a dominant role. This work presents the simulation results of the shielded twisted pair (STP) cable radiation to different in-car antennas that operate in various frequency ranges. In the first step, the model of the antennas for different frequency bands, i.e., TV IV-V, GPS, Wi-Fi, and DSRC are simulated and presented. The model of STP cable, the corresponding in-vehicle routing, and the resulted common-mode currents are discussed, in the next step. Furthermore, the discrete spectrums of pulse amplitude modulation with N-level (PAM-N) signals in the above-mentioned frequency bands are explained. Finally, the coupled voltages of the cable on the antennas are presented.