The reason for interference suppression is the possible occurrence of electrical interferences in vehicle networks originated by various consumers, which may interfere onto radio devices in a conduction-guided way or by radiation. A distinction is made between long-distance and short-distance interferences.
Long-distance interferences ( <remote-radio-inter>) are interferences (coming from the vehicle) of radio devices outside the vehicle.
Short-distance interferences ( <short-inter-supp>) are interferences which affect radio devices mounted and operated inside the vehicle.
The requirements to interference suppression are described according to [DIN VDE 0879-1;DIN VDE 0879-1;;3;] and [DIN 57879-1;DIN 57879-1;;3;].
Figure 50: Structure of interference supression
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