Study of field coupling mechanism at susceptibility testing of automotive components in the Gigahertz range

In the Gigahertz range the coupling into the wiring harness predominates the direct field coupling into conductive traces of unshielded DUT. Using the Tubular Wave Coupler [5] is a very effective way to simulate the direct field coupling into separated traces by injection of common mode disturbing currents into the ground system of the DUT.