Error Correction in Transient Electromagnetic Field Measurements Using Deconvolution Techniques

It is difficult to make an accurate transient measurement on electromagnetic pulses in the pico-second domain because of the limitations of measurement components. In this paper, we present a two-step deconvolution routine to compensate for the measurement distortions in our short electromagnetic pulse (EMP) exposure facility for studying biological effects. As depicted in Figure 1, the facility mainly consists of a pulse generator and a GTEM cell. The measurement system includes a Tektronix SCD 5000 transient digitizer (4.5 GHz bandwidth), connection cables, and two Asymptotic Conical Dipole (ACD) D-dot (dD/dt) sensors: ACD-1(A), which is mounted on the top ground wall of the cell and utilized for real time monitoring during exposures, and ACD-1(R), which is used to map the field on the bottom ground wall of the cell where the specimens are placed.