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 the way 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 Schroeder diffiser and another was an asymmetric chamber with oblique enclosure including fixed randomly made diffusers (W) at the ratio of 1, 2 and 3 % of the total empty volume. FDTD simulation method was used to analyze the field homogeneous characteristics of these two types asymmetric reverberation chambers.