The Reflection And Transmission Properties Of Reinforced Concrete Wall

The proliferation of modem wireless mobile communication-especially the Short Range Wireless technology (SRW) (such as IrDA,802.11,BlueTooth,Zigbee,UWB)-over the past decade has accelerated the development and application of indoor wireless system. It generated great interest in the reflection and transmission properties of concrete, especially the reinforced concrete. In this dissertation, we combined a method of moments/Green's Function (MOM/GF) to model the reflection and transmission properties of a kind of reinforced concrete for 2.4GHz band. The result indicated that the existence of the wire grid made the scattering more complicated. So, it is more difficult to define the reflection and transmission properties for slab with wires.This dissertation started from the numerical analysis method of the electromagnetic field, and then we found the Green's Functions of the reflection and transmission field for the reinforced concrete. In order to solve the Green's Functions, we have to solve the sommerfeld integral (SI). Here, we use the saddle point method to evaluate the near filed and exact numerical method for far field. While in solving the wire currents, we adopted the MOM. After introduction of the related theories, we carded out some research on the reflection property of a kind of reinforced concrete for 2.4GHz band, and made a compare for the properties of the different wall thickness.From the contrast of the different method used in electromagnetic field calculation, we can find an effective method to evaluate the radiation properties of the reinforced concrete, and provided particular data for indoor wireless system modeling.