Zakariyya, O . SUyguroglu, RSadiq, B. O2021-03-312021-03-312018-10Zakariyya, O. S., Uyguroglu, R. & Sadiq, B. O. (2018): Design of Multiband and Ultrawidband Circular Fractal Antenna with Partial Ground Plane. FUW Trends in Science & Technology Journal, 3(2B); 712 – 716, Published by Federal University Wukari, Taraba State. Available online at http://www.ftstjournal.com/Digital%20Library/32B%20Article%207.php20485170http://hdl.handle.net/123456789/4627Due 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 studioenMultibandultra-wideband antenna,partial ground structurefractal geometriesArticle