Planar Dual-Band Monopole Antenna with an Extended Ground Plane for WLAN Applications

Figure 5

The effects of varying the four parameters of the parasitic resonator on the reflection coefficient of the proposed antenna. (a) . (b) . (c) . (d) . (In each study, the other parameters are the same as those listed in Table 1.)

(a)

(b)

(c)

(d)