Triband Operation Enhancement Based on Multimode Analytics of Modified Rhombic Ring Structure with Fractal Ring Parasitic

Figure 8

Surface current distribution on the top and bottom layer of the presented antenna at the operating frequencies of (a) 1.8 GHz, (b) 2.45 GHz, (c) 3.24 GHz, and (d) 4.04 GHz.

(a)

(b)

(c)

(d)