Measured and computed in-vehicle field distributions

This paper describes an automated in-vehicle field measurement systems that can be used to acquire 3D electric field distribution generated from wireless antenna sources placed within a passenger vehicle. One prototype is made out of metal and another Delrin. Comparisons between simulated and measured 2D field distribution within a simple cavity correlate well at 870 MHz. Measurements made within an actual vehicle using the Delrin positioner shows reasonable correlation with simulations. A short analysis of field measurements at 1800 MHz is performed. Some possible challenges of measurements within an actual vehicle are also discussed.