608393.fig.006a
(a) E-plane
608393.fig.006b
(b) H-plane
608393.fig.006c
(c) E-plane
608393.fig.006d
(d) H-plane
608393.fig.006e
(e) E-plane
608393.fig.006f
(f) H-plane
Figure 6: Study of variations in radiation patterns versus the changes of lengths of metallic brims at 12, 15, and 18 GHz, respectively. (a)-(b) E-plane and H-plane at 12 GHz, (c)-(d) E-plane and H-plane at 15 GHz, and (e)-(f) E-plane and H-plane at 18 GHz.