Field distributions within a rectangular cavity with vehicle-like features

A simple model vehicle cabin was constructed to investigate 3D field distributions generated by an on-board transmitter within a large metal cavity. Simulations were found to be in good agreement with internal field measurements acquired using a low disturbance automated probe positioner at 870 MHz. Results show vehicle furnishings, in particular the metallic components, change field distribution within the cavity and should be included for electromagnetic modelling and field exposure assessments. The study enhances understanding of complex field behaviour within a vehicle. The results (e.g. E-field hotspots) can be used to optimise placement locations of on-board transmitters and introduce field mitigation techniques in appropriate locations.