EMI Modeling in Automotive Data Communication Structure

Data links are facing more internal and external electromagnetic noises due to high speed data communications in the automobile industry. A mathematical model is presented to predict the EMI in automotive data link circuitries. This model is a useful mechanism that facilitates EMI reductions in the future automotive cable designs. Experimental results indicate that the model accurately predicts crosstalk-couplings of three 1.7 meter standard unshielded multi-conductor cables up to 80 MHz where the signal wavelength is at least two times longer than the cable length. All experimental data are collected inside a fully enclosed NoiseKen tent. The tent is in a shielded environment that minimizes background noises.