A Semi-Circular Polygonal Monopole Antenna for Ultra-Wideband (UWB) Applications

In this paper, a new semi-circular polygonal monopole antenna with partially grounded plane to cater the needs of next generation mobile navigation is proposed. The designed semicircular polygonal slot radiator provides desired S11 parameter’s greater than -10 dB in the UWB frequency range. As for the proposed antenna, it has been designed on an FR4 substrate with a dimension of 30 x 28 x 1.6 mm. It is used in the frequency bandwidth of 3.3GHz to 13.4 GHz. At 4 GHz, 5.3 GHz, 6 GHz, 8 GHz the design has reciprocal radiation that can be described as omnidirectional. Thus, the antenna provides a bandwidth of gain in a range of 3.0-6.5dB. In this study, development of a compact printed rectangular monopole antenna suitable UWB application is proposed because it possesses several benefits such as small size in terms of antenna dimension, enhanced impedance matching, relatively ease of fabrication, and high gain.