Determination of Anechoic Chamber Set-Up Using Simulation Approach: A Review

In this paper, we review (i) 5 full-wave numerical techniques of modeling the anechoic chamber, namely the Method of Moments (MoM), Transmission Line Matrix (TLM), Finite Element Method (FEM), Finite Differences Time Domain (FDTD) and Finite Differences Frequency Domain (FDFD), (ii) 3 asymptotic numerical techniques which are (a) Geometrical Optics (GO), (b) Physical Optics (PO) and (c) Uniform Theory of Diffraction (UTD) and (iii) Ray-tracing technique dealing with number of cells of the surface area of the enclosure. The MoM technique formulates the equivalent surface or volumetric current. The Finite Differences Time Domain (FDTD) is more stable in the computational modeling of EM for inhomogeneous materials. We conclude that a combination of a few numerical techniques in the computational Electromagnetic (CEM) simulations to the modeling AC from a basic Ray-tracing technique to the complex Finite Integral technique (FIT) is available under the CST Micro-wave Studio Suite.