Conductive fabric's SE measurement in a Mode Stirred Reverberation Chamber

The new approach proposed by NIST for the measurements of the Shielding Effectiveness (SE) of materials in a Reverberation Chamber (MSRC), was applied in a lower frequency range 600-1000 MHz for testing a conductive fabric. The results here obtained have been compared to those recorded by measuring the SE of the same fabric following the ASTM 4935 Standard. The difference between ASTM results and the RC results-that ranges from 1 to 11 dB-is investigated to understand the reason of the disagreement between the two.