Visualising radio propagation inside buildings

An understanding of how the radio waves propagate is required in order to create computer-based models that predict radio coverage inside buildings. To help with this understanding, a method of measuring the magnitude and phase of spatial field distributions (at 1.905 GHz) inside buildings is described. The measurements are then used to create a time sequence of pictures of the instantaneous field distribution, which, when viewed sequentially, creates a movie which shows how the field is propagating in the region where the measurements were taken.