Fig. 8
From: Null-image effect of planar coils over a grounded ferrite slab

Contour map of the normalized electric field, observed at \(z=h+d\), due to image current, plotted against the conductor-backed ferrite slab thickness \(t_f\) and the distance d for the case of \(h/a=0.01\) and \(\mu _f=100\). All dimensions have been normalized to the current loop radius a.