Simple estimation of average field strengths in resonant environments for assessing human exposure to electromagnetic fields

Simple estimates for average field strengths over the interior of a car due to an internal source are compared with detailed results from 3D numerical models. The effect of simple lossless window glass is also included in the analytical calculations. The comparisons demonstrate that reasonable estimates can be obtained for the car test case at frequencies above 1 GHz. This approach could be used to help assess field exposure in other resonant environments that are less amenable for detailed numerical simulation.