In-Car Emission Prediction for a Real Communication System Based on a Component Level Test

In the automotive industry the so called CASE (Connected, Autonomous, Safety, Electric) topics are the challenge for every car manufacturing company. These topics imply a higher data rate for the new in-car-communication-systems (e.g. automotive Ethernet 100BASE-Tl or 1000BASE-Tl). In addition, the cycles for the car development get shorter and the diversity of car models rises. To meet these requirements an improvement of the development process is necessary. One of the important topics to improve through all development phases of bus- and communication systems is the electromagnetic compatibility (EMC), where specified EMC requirements have to be fulfilled by the product in order to be approved for the market. In terms of EMC, this paper is focusing on the emission requirements for car internal electrical devices to the car owned antennas. This is investigated in frequency based measuring approaches (electromagnetic interference (EMI)-receiver and a vector network analyzer (VNA)), for the analyzation of the EMC behavior of the bus-/communication system.