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Description
Intelligent construction based on wireless networks and constant connection to the Internet is becoming more and more popular. In the case of wireless communication, it is necessary to take into account not only the demand reported by the constructors of new facilities, but also the modernization of the infrastructure that has been existing for many years. The problem is assessing the reliability of a wireless link inside buildings. Both old and currently used building materials have a huge impact on the intensity of the electromagnetic field. Wave attenuation, e.g. by the material the wall is made of, may even prevent communication. The propagation of electromagnetic waves is strongly dependent on the geometry of the material (e.g. drilling in clinker bricks, admixtures, metal inserts), as well as on its electrical properties.
The aim of the article is to analyze the influence of the location of holes inside bricks on the values of electric field intensity. The subject of the analysis was an isolated system containing a wall made of clinker bricks. The influence of the variability of the width of the holes inside the bricks on the electric field values was considered. The brick was treated as a heterogeneous material. The article also presents the results of the influence of changes in the conductivity of bricks in the considered models on the electric field values. The distribution of the electric field intensity generated by a wireless communication system operating at a frequency of 2.4 GHz is presented. The numerical finite difference time domain method (FDTD) was used. The influence of drilling on the field intensity values in the area behind the wall was discussed. The obtained results may be useful in estimating the value of the damping coefficient for heterogeneous materials used in construction.
