DEVELOPMENTS IN ULTRAWIDEBAND(UWB) ANTENNAS

Abstract

Federal Communications Commission (FCC) has released frequency from 3.1GHz to 10.6GHz (bandwidth of 7.5GHz) for ultra wideband (UWB) wireless communications. High data rate wireless, low power consumption and low cost communication technology gives a further scope for research and development in UWB antennas. There are many challenges in designing of UWB antenna than a wide/narrow band antenna. The main characteristic i.e. return loss, radiation properties, impedance and gain are required satisfactory over the entire bandwidth. This paper focuses on extensive investigations carried out on the different type of UWB antennas and their developments. The Design and characteristic of portable UWB antenna like Planar Monopoles, Printed Monopoles, Printed wide slot, Band Notched, Hybrid and Dielectric Resonator Antenna are reviewed and summarized.