Geometrical Representation and Transmission Line Modeling of Complex Wiring Harnesses with Diversified Conductors

In this work, geometrical modelling of random wire bundles involving conductors with different geometrical characteristics is addressed. To this end, a polynomial representation is adopted for modelling wire trajectories, whose initial positions are generated by a discrete algorithm based on Graph Theory. An iterative approach is used to generate the proper polynomial functions that satisfy physical constraints. The possibility that the involved wires have different radii is taken into account both in the generation of the initial cross-sections and in the design of an ad-hoc anti-overlapping algorithm. Eventually, crosstalk and radiated susceptibility of the generated bundle geometries are investigated by resorting to two different approaches, i.e., transmission line (TL) theory and full-wave solution. Comparison of the obtained results proves the effectiveness and prediction accuracy of the TL-based solution.