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

Figure 12

Simulated and measured radiation patterns of the presented antenna at the resonant frequencies of 1.8 GHz, 2.45 GHz, 3.24 GHz, and 4.04 GHz in (a) X-Z planes and (b) Y-Z planes.

(a)

(b)