The aim of this paper is an analysis of propagation of a high frequency electromagnetic wave (f=1.8 GHz) in a part of the building. Three typical technologies (i.e. the brick, the reinforced slabs, and the passive building), commonly used in construction of buildings are evaluated. Some phenomena connected with interaction of electromagnetic field with the complex, non-ideal material structures are presented and discussed. The influence of physical properties of materials, and the effect of obstacles such as additional wall are examined. A discussion connected with the influence of the reinforcement and the additional walls on the distribution of electromagnetic field is useful for designers of wireless networks.
