Figure 18

Surface current distribution at copper backplane of the resonator (a) 3.98 GHz (b) 5.5 GHz (c) 8.48 GHz and (d) 11.73 GHz.
Surface current distribution at copper backplane of the resonator (a) 3.98 GHz (b) 5.5 GHz (c) 8.48 GHz and (d) 11.73 GHz.