keywords: Multiband and ultra-wideband antenna, fractal geometries, partial ground structure
Due to advancements in communication technology, there is an increase in the demand of small size, low cost, multiband and ultra-wideband antennas. With a view to address these demands, a fractal design was employed in this study. Despite the advantages provided by these antennas, performance enhanced further by using a partial ground plane. This research work presents an antenna which is based on the well-known Sierpinski Carpet fractal with iteration factor of 1/3. A multiband circular patch antenna using third order Sierpinski Carpet was designed to operate at 1.88GHz. The proposed antenna was modified with a partial ground structure to achieve ultra-wideband behaviour with a bandwidth of 8.18GHz at centre frequency of 2.54GHz. The antenna was simulated using three dimensional finite integration time domain commercial software microwave studio.