Shielding effectiveness evaluation of densified-small-particles (DSP) cement composite

This paper presents a shielding effectiveness evaluation of densified with small particle (DSP) cement composite at microwave frequencies by means of an improved nested reverberation chamber (NRC) technique, more faster than the classical one. In fact, the mechanical stirring inside the inner chamber was replaced by the frequency stirring method (FS) and only one scattering parameter was acquired to estimate both empty and loaded aperture. By this method, the stirrer movement becomes unnecessary. A software was used to manage the measurement and the post-processing operations.