Numerical Analysis of the Building Materials Electrical Properties Influence on the Electric Field Intensity

Determination of the Effective Electromagnetic Parameters of Complex Building Materials for Numerical Analysis of Wireless Transmission Networks

“…Numerical analysis of the propagation of electromagnetic waves allows for taking into account the building structure as well as to perform multi-variant analysis of the wireless communication system [5,6,11]. The analysis of the electromagnetic phenomena can be performed using numerical methods such as finite element method (FEM) [18,19] or finite-difference time-domain method (FDTD) [3,9,11,20,21]. Despite the approximations in the models and calculation errors, numerical methods allow to obtain solutions for complex models.…”

“…The authors performed a numerical analysis of the electric field intensity distribution in models with a single-layer wall [21] or a multi-layer wall [5,6]. The variability of the electrical parameters of the materials was also taken into account.…”

“…The variability of the electrical parameters of the materials was also taken into account. Models composed of homogeneous materials (concrete, aerated concrete, full brick) [21] as well as complex ones (clinker bricks) [6] were also considered. The authors also analyzed models related to concrete and reinforcement.…”

“…Electrical conductivity has the greatest impact on the measured or calculated values of the electric field. For the walls made of concrete [14,21], the permittivity (ε r ' ∈ {5, 6, 7, 8}) has a smaller impact, since changes in the electric field intensity are up to a 15% at σ < 0.01 S/m. However, for σ > 0.09 S/m, the values of the electric field are almost identical [21,22].…”

“…For the walls made of concrete [14,21], the permittivity (ε r ' ∈ {5, 6, 7, 8}) has a smaller impact, since changes in the electric field intensity are up to a 15% at σ < 0.01 S/m. However, for σ > 0.09 S/m, the values of the electric field are almost identical [21,22]. Aerated concrete is a lighter type of concrete and in the wireless communication analysis, ε r '∈ {2, 2.25, 2.5} is assumed [21].…”