Analysis of Metamaterial Walls Reverberation Chamber by Using Modal Expansion Theory

This paper deals with the modal expansion theory to characterize reverberation chamber with anisotropic walls. Adding anisotropic walls, such as metamaterial, allows to reduce the Lowest Usable Frequency (LUF). A methodology is proposed to choose the required meta materials to reduce this LUF. By changing only two parallel walls, the LUF is almost reduced by 3 times compared to the classical reverberant chamber LUF.