The overall dimension is
comparatively large than the antenna proposed in [5, 7]. Not
only that, but the gain level of 2.2 GHz - 2.83 GHz is
comparatively less than the gain level of the frequency range of
its UWB counterpart. In future, our focus will be held on
reducing total size of the antenna to become more flexible
usage as well as increasing the operational bandwidth and gain
etc. Beside this, our concern will be set on the choosing of
meta-material instead of conventional materials.