Enhanced Geometrical Model of Complex Cable Bundles Through Polynomial Representation of Cable Trajectories

In this paper, a novel approach for modelling hand-assembled random cable bundles is presented. The proposed method foresees to represent each cable position in the bundle via analytical polynomial curves, assuring smoothness of trajectories, as well as flexibility in accounting for bundle randomness. The generated bundle geometry is used in combination with full-wave and transmission-line based simulation, providing accurate predictions of the noise induced at the bundle terminals due to crosstalk between wires and due to an external EM field. The proposed examples, run in comparison with the more computationally-efficient yet approximate model in [1], prove the validity of the proposed generation algorithm and the need for accurate representation and discretization of the bundle if reliable predictions in a wide frequency interval are the target.