Field calibration system implementing 3-D optically modulated scatterers for immunity test site purposes

In this paper, a field calibration system for immunity test site using optically modulated scatterers is described. The presented system utilizes, designed by authors, three-dimensional optically modulated and powered scatterers. One of the most important features of using modulated scatterers is their low influence on the tested field, which allows employing an array of scatterers instead of mechanically scanned classical field sensor. The use of an array version of a measurement setup can result in a considerable reduction of the calibration time. Speed and accuracy improvements of field calibrations have been the main intention of the new calibration system development.