Directive Stacked Patch Antenna for UWB Applications

Figure 2

(a) Surface current density on the GND plane with/without modified C-shaped slot (𝐿1=34, 𝐿2=20, 𝐿3=3, 𝐿4=2, 𝐿5=5, 𝐿6=0.5, 𝐿7=1, 𝐿8=1, 𝐿9=1.75 mm’s). (b) Reflection responses for different design stages (curves 1, 2, and 3) of the stacked patch antenna.

(a)

(b)