Estimate on the uncertainty of predicting radiated emission from near-field scan caused by insufficient or inaccurate near-field data: Evaluation of the needed step size, phase accuracy and the need for all surfaces in the Huygens´ box

Near-field scan on a Huygens´ box can be used in order to predict the maximal radiated emission from a Printed Circuit Board. The significance of step size and phase accuracy, and the importance of a full Huygens´ box are investigated by simulation of two different models with two different numerical methods. The prediction of maximal radiated emission is quite robust but the results also show that a full scan on all six surfaces is probably needed.