Improved triaxial set-ups for the measurement of complex transfer impedances and admittances of shielded multiconductor cables inside cable bundles

The determination of the complex transfer impedances and transfer admittances of shielded multiconductor cables is the prerequisite for calculating the disturbing currents on the inner wires of the cable. With a measurement procedure based on the triaxial measurement set-ups using multiconductor transmission line theory for evaluation, it is possible to determine individual transfer impedances and admittances for each inner conductor of a single shielded multiconductor cable over a broad frequency range. This paper shows a first attempt to measure transfer impedances of cables that are located in cable bundles with a modified measurement set-up that is based on the measurement set-up for single cables. As soon as some emerged problems, which are also apparent in a real world environment, have been solved, it should be possible to carry out precise transfer impedance and admittance measurements on cables that are located in cable bundles.