Investigation of the field uniformity of a mode-stirred chamber using diffusers based on acoustic theory

This paper presents the combination of acoustic diffusors with a mode-stirred chamber to enhance the field homogeneity. Simulations with a TLM-based time-domain computer program show a more homogenous field in this advanced mode-stirred chamber as compared to a normal mode-stirred chamber. The efficiency of the diffusors is illustrated in comparison with a rectangular reference room. The simulations are verified by measurements in a mode-stirred chamber combined with two different types of diffusors. The two types of investigated diffusors are the maximum length diffusors and the quadratic residue diffusors. We also investigate the combination of both.