Full-Wave EM Simulation in Automotive at 24 and 40 GHz

The use of WIPL-D, a 3D electromagnetic (EM) full-wave method-of-moments (MoM) based software suite for full-wave electromagnetic simulation of automotive applications at 24 and 40 GHz is described.

This is one of typical illustration of a full-wave EM simulator applications in automotive industry where it is used for accurate prediction of radiation pattern of radar antenna mounted on a car. The frequencies of interest for such applications are usually very high and accordingly, the electrical size of a car, measured in wavelengths, is large, resulting in highly demanding EM simulations.

A realistic car shell model has been imported into WIPL-D Pro CAD environment where the model was easily prepared for simulation using repairing, automatic meshing and antenna positioning features. The simulations have been carried out using GPU simulation module to overcome the limitations arising when simulating the models of such a large electrical size. Furthermore, even with the use of GPU, simulation would not be possible without extensive use of various WIPL-D smart features. In particular, with WIPL-D Pro electrically very large problems can be solved using sophisticated approximate techniques with negligible loss of accuracy. Using antenna placement reduction technique, a number of unknown coefficients on parts of the model located far away from the antenna can be reduced since such elements do not significantly contribute to the radiation pattern. In addition, another feature called shadow reduction can be subsequently used to reduce a number of unknowns on model parts not directly illuminated by the antenna.

Section: Antenna Placement

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