736876.fig.004a
(a)
736876.fig.004b
(b)
736876.fig.004c
(c)
Figure 4: The virtual shift of a rectangular column using the closed configuration. (a) Total fields distribution when the column is placed at (0, −0.6 m) with 45 degree to the horizon; (b) similar to (a) but the active device is turned on. (c) Total fields distribution when the column is placed at (0, 0.6 m) with zero degree to the horizon.