Below is the results of simulation of antenna radiation
pattern at frequency of 2.35 GHz and 3.35 GHz. Those two
frequencies are selected because it is the middle frequency
from each frequency band, 2.3 GHz and 3.3 GHz. The antenna
radiation pattern for E plane and H plane at frequency 2.35
GHz and 3.35 GHz are illustrated in Figure 8 and 10. On the
other hand, the 3D radiation pattern at 2.35 GHz and 3.35
GHz can be seen in Figure 9 and 11, respectively. Figure 8 to
11 shows the omnidirectional radiation pattern for the
proposed antenna. This is according to the characteristics of
monopole or dipole antenna in general.