Field uniformity characteristics of an asymmetric structure reverberation chamber by FDTD method

Abstract

Conventional reverberation chamber has a rectangular structure including mode-stirrers or mode-tuned stirrers to obtain the field uniformity inside the chamber. This paper explained how to acquire the field uniformity in an asymmetric structure instead of conventional rectangular structure with right-angled planes. Two types of asymmetric structure were considered. One was an asymmetric reverberation chamber using a Schroeder diffuser and another was an asymmetric chamber with an oblique enclosure including fixed randomly made diffusers (RMD) at the ratio of 1, 2 and 3 % of the total empty volume. The FDTD simulation method was used to analyze the field homogeneous characteristics of these two types of asymmetric reverberation chambers.