Shield transfer impedance model of a multi-branched braid shielded cable harness

This paper presents a method of modeling shield transfer impedance (STI) of a multi-branched shielded cable harness. The model is based on information found in Vance [1]. The modeling method can be used to assess the impacts of defects, such as holes in the cable over-braid shield, and to evaluate the ability to locate defects by varying shield current drive conditions in a realistic manner. The model is implemented using MATLAB [2] and Micro-Cap [3] SPICE simulation codes.