Low-Frequency Theoretical Analysis of a Source-Stirred Reverberation Chamber

A general method for radiated emission prediction in a multiple monopole source stirred reverberation chamber

“…The electric field is sampled in Ns = 120 points, irregularly placed onto the RC's walls. In the analytical model of this chamber, all loss mechanisms are taken into account in terms of an equivalent finite conductibility of the walls [21]. More details on the RC characterization, including quality factor, working frequencies, the well stirred conditions and the performances of the multiple monopole source stirring technique can be found in [24–26].…”

“…The main goal is to characterize the EUT (the reference scenario) with a set of elementary sources, electric and magnetic currents (the equivalent scenario or the equivalent sources), whose electromagnetic behaviour inside the MMSS RC can be analytically predicted [21].…”

“…More specifically, the main goal of the paper is to apply the idea to an EUT inside an RC. In particular, the method appears to be very suitable for RCs that implement the multiple monopole source stirring (MMSS) technique [21,22], due to the presence of arrays of monopoles on the RC's walls for the stirring action, and useful, in the emission test, for sampling the electric field.…”

Emulation of the Rician K-Factor of 5G Propagation in a Source Stirred Reverberation Chamber

“…The limitation of this approach is due to the presence of losses from different sources (walls, antennas, apertures, gaskets) that cannot be modelled as is. For this reason, a classical approach in RC chamber [22] modelling is used: the chamber's walls are simulated with an equivalent conductivity that permits us to obtain a chamber with the same Q-factor as the real one, for each frequency [25]. In particular, in our chamber, in order to obtain the same Q-factor, the conductivity of the walls is modelled with a value that is reduced by a factor of 10 with respect to the σ of the galvanized steel.…”

“…The proposed method is applicable to RCs where the field configurations are known a priori and repeatable, such as mechanical stirring using one or more metallic paddles in step mode, or the Oscillating Walls Stirred (OWS) RC [21], or, as in our case, to the Multiple Monopole Source Stirring RC. This particular implementation of a source stirring technique is achieved thanks to an array of monopole antennas mounted on the walls of the RC and, subsequently, fed to obtain the stirring action [22]. This technique was successfully compared to the more classical approach implementing both mechanical stirring and MMSS in the same chamber [23].…”