Applying the Multiple Scattering (MS) Method to Evaluate the Current Response on a Cable Harness Due to an Incident Plane Wave

In this paper, the MS method is applied to solve an immunity problem of harness-body co-simulation. In this immunity problem, the structure under study consists of two parts: the cable harness part (harness) and the metal surface part (body). The harness is solved using the generalized multiconductor transmission-line (GMTL) solver and the body is solved using the mixed-potential integral equation (MPIE) solver. The interactions between the harness and the body are achieved through a series of iterations called MS. The calculation results show good correlation with the reference results, which validates the accuracy of the MS method.

I. Introduction

Cable harnesses consisting of multiple wires significantly affect the electromagnetic compatibility (EMC) performance of a system, such as a vehicle, a high-speed train, or an aircraft [1]. External fields coupled to a cable harness via the system body can introduce electromagnetic interference (EMI) problems that are prevented through constrains on packaging, harness routing and shielding requirements to meet strict EMC/EMI requirements. Detecting these issues in the early stages of a system design through harness-body cosimulation can reduce design cost and help achieve compliance with EMC/EMI requirements without a need for a redesign. Therefore, the modeling of a cable harness together with the nearby metal surface is highly demanded.