Research On Measurement Uncertainty Of Absorption Cross Section In A Reverberation Chamber

The absorption cross section (ACS) of absorbers are measured in a reverberation chamber and the relative uncertainty of measurements is calculated. The ACS is calculated by a time-domain method at frequencies in the range 1 similar to 3GHz. The average relative uncertainty of the ACS over the frequency range is 0.02 by the measurements in eight different configurations of absorbers and antennas, which shows good experimental stability.