Performance characterization of the oscillating wall stirrer

A novel stirrer design for reverberation chambers, namely the oscillating wall stirrer, is described and its performance assessed in this paper. This stirrer implements mechanical stirring but, in contrast to most types of stirrers, it does not rotate but it, indeed, oscillates. The stirrer forms a quasiwall within the reverberation chamber which allows for a very efficient working-to-total volume ratio, comparable to other wall-stirring techniques like, for instance, the VIRC or the stadium reverberation chamber. This paper discusses in-depth, for the first time, its implementation and reports on the performance of the oscillating wall stirrer assessed by five different performance indicators.