The simulated radiation patterns of the proposed
asymmetric ACS-fed rectangular patch loaded with a slit and
branch line strips monopole antenna are presented in Fig. 6 at
4.78 GHz frequency. The simulated radiation patterns cut in
the elevation plane (y-z) is shown in Fig. 6(a) and cut in the
azimuthal plane (x-y) is shown in Fig. 6(b) for the proposed
antenna at the upper frequency bands of 4.78 GHz is
presented. The radiation patterns obtained in the x-y plane is
close to omni-directional, and that in the elevation plane is
similar to monopole kind of antenna.