Abstract
A study about electric fields distribution around or inside buildings according to those structures is presented. Radio communications such as mobile phones and wireless LAN systems are affected by walls and windows of buildings when those communication devices are used inside or around buildings. In this paper, electric field distribution analyzed using the building model which was constituted by concrete walls and windows were compared with those analyzed using the building model which was constituted by only concrete walls. In addition, electric field distributions around the building model that some windows were opened partly were analyzed. All measurement data were compared with the numerical results obtained by FVTD simulations. In conclusion, the effect of windows on the electric field distribution was remarkably different from that of concrete walls. Reflection waves from windows were higher than those from concrete walls, and transmission waves through windows were smaller than those through concrete walls. Therefore, electric fields strength around windows became higher than those around concrete walls.
