  Ultra-wideband is increasingly advancing as a high data rate wireless
technology after the Federal Communication Commission announced the bandwidth
of 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra-wideband applications.
Furthermore, designing a UWB antenna faces more difficulties than designing a
narrow band antenna. A suitable UWB antenna should be able to work over the
Federal Communication Commission of ultra-wide bandwidth allocation.
Furthermore, good radiation properties across the entire frequency spectrum are
needed. This paper outlines an optimization of fractal square microstrip patch
antenna with the partial ground using a genetic algorithm at 3.5 GHz and 6 GHz.
The optimized antenna design shows improved results compared to the
non-optimized design. This design is optimized using a genetic algorithm and
simulated using CST simulation software. The size of the optimized design is
reduced by cutting the edges and the center of the patch. The optimized results
reported, and concentrated on the rerun loss, VSWR and gain. The results
indicate a significant enhancement as is illustrated in Table II. Thus, the
optimized design is suitable for S-band and C-band applications.
