Current Probe Characterization in a Reverberation Chamber

The paper presents how it is possible to characterize a current probe in terms of its transfer impedance inside a reverberation chamber. The probe clamps a floating wire placed inside the working volume of the chamber and the current on the wire is calculated from the knowledge of the total average field in the working volume, measured by a tri-axial field sensor. The current is calculated representing the field in terms of a summation of random plane waves, where a FDTD code is used to compute the current induced by each plane wave along the wire clamped by the probe under test. Results for the current distribution along the wire are reported for several frequencies. Finally, the transfer impedance of commercial probes is recovered from the current knowledge and compared to the values given by the manufacturers