843624.fig.004a
(a)
843624.fig.004b
(b)
843624.fig.004c
(c)
843624.fig.004d
(d)
843624.fig.004e
(e)
843624.fig.004f
(f)
Figure 4: Coupling coefficients calculated from the S-parameters measurements: Left column without superstrate (free space) and right column with superstrate. (a), (b) Coupling between dipoles operating at   HRF. (c), (d) Coupling between dipoles operating at = LRF. (e), (f) Coupling between dipoles operating at different frequencies (cross-frequency coupling).