HFSS Simulation Predicts the Radiated Emission from Complex Cable Harness Configuration

We have considered a hybrid approach for a fullwave radiated emission from a complex cable harness configuration that involves a 3-D simulation with HFSS coupled with a 2-D simulation of the cable cross-sections for extracting RLGC parameters and distributing them in a 1-D transmission line model for an accurate determination of voltages and currents. Semi-empirical models are used to model the transfer impedance of braided shields. This hybrid approach greatly reduces the solve time and provides high fidelity simulations of radiated emission from cable harnesses in complex environments such as automotive and aerospace, which, otherwise would have been difficult. For real-life applications, twisted pairs, shielded, and insulated jackets can be conveniently modeled. Moreover, the design workflow is fully automated and scriptable, which significantly enhances its usefulness. A comprehensive study will be presented.