Reflection and Transmission Coefficient for Layered Propagation Model

Two types of radio propagation modals are developed on the basis of material layer structures. One is three layer propagation model consist of three different material layer. Second one is five layer propagation models which is the extension of three layer propagation models. It consist of five different material layer with their respective thickness is considered. By using these two models the reflection and transmission coefficients are obtained. Material characteristics of concrete and Ferro concrete are also obtained at different operating frequency ranges from 433 MHz to 2 GHz. These models help us to find the detection range for layered material base structures.