Evaluating Field Interactions Between Multiple Wires and the Nearby Surface Enabled by a Generalized MTL Approach


Interactions between a cable harness containing multiple wires and the nearby metal surface can be evaluated by full-wave methods. Though these methods can calculate the interactions with great accuracy, they have long simulation times and large memory requirements when dealing with complex wire structures. The multiple scattering (MS) approach by treating the cable harness and the surface separately using different algorithms has been proven to be superior to the full-wave methods when evaluating these interactions. However, the cable harness solver in the previous MS approach is restricted to two-wire structures since the per-unit-length (pul) inductance (L) and capacitance (C) are derived based on the antenna and differential modes assumption between two wires. In this paper, a generalized multiconductor transmission-line (GMTL) approach is proposed to overcome the two-wire limitation. In the GMTL approach, all wires take the infinity as the reference. The extraction of the pul L and C for the cable harness is not limited by the number of wires. Thus, the GMTL approach can conveniently model multiple wire structures. The application of the GMTL approach to the multiple wires enables the MS approach to accurately evaluate the interactions between the cable harness and the metal surface.


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory


Ford Motor Company
National Science Foundation (U.S.)


This work was supported in part by Ford Motor Company and in part by the National Science Foundation (NSF) under Grant IIP-1440110.

Keywords and Phrases

Antennas; Cables; Electric conductors; Electric lines; Linearization; Metals; Method of moments (MOM); Multiple scattering; SPICE; Surface scattering; Surface treatment; Cable harness; Differential mode; Field interactions; Long simulation time; Memory requirements; Multiconductor transmission lines (MTL); Power cables; Wire; Multiple scattering (MS)

International Standard Serial Number (ISSN)

0018-9375; 1558-187X

Document Type

Article - Journal

Document Version


File Type





© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2018