Full wave analysis of chaotic reverberation chambers

In this paper, we study possible ways to improve the Reverberation Chamber (RC) behavior. There could be benefits in deforming the RC rectangular geometry of the baseline cavity by inserting spherical diffractors into the RC or by titling the walls of the RC. We demonstrate that increased field disorder and randomization can be achieved with both the asymmetric structures in presence of the same mechanical stirrer. It is found that the improvement is prominent at low frequencies, with respect to the lowest usable frequency (LUF), which is consistent with results obtained by other investigators on similar RC structures. Numerical Finite-Difference Time-Domain (FDTD) simulations are performed to demonstrate the field chaoticity improvement in terms of both uncorrelated excitation frequencies and stirrer configurations.