The proposed antenna has a wide slot and a rectangular patch with adding a Hilbert fractal slot resulting in a better matching at resonant frequencies. First, the wide slot is created by etching a slot on the ground plane near the feed line
to operate at 0.9 GHz. The second resonant frequency at 1.8 GHz is designed by attaching the stub with electrical length of λ/4. Finally, the slot on a rectangular patch is designed with Hilbert geometry of 0 iteration and 1st iteration as shown in
fig.2(a) and 2(b), respectively. The 1st iteration is chosen because the antenna bandwidth with 1st iteration fractal slot can satisfy and support the Wireless Local Area Network. This frequency can be controlled by adjusting the length of Hilbert
fractal slot at Lp = 6Lp1 + 2Lp2 + 2Lp3 + 2Lp4 + Lp5. The antenna results with different Hilbert fractal slot are shown in Fig.3. In order to study antenna parameters affecting to multi-band operations, the effective parameters of Ws1, Ls2 and S will be