REVIEW OF TECHNIQUES FOR DESIGNING PRINTED ANTENNAS FOR UWB APPLICATION

Due to the rapid development in the field of wireless communications there is an increasing demand for higher data rate and large bandwidth. The emerging Ultra Wideband (UWB) is a promising technology as it can accommodate higher data over a large bandwidth. The design of an antenna for UWB system is a challenging task. Many antennas have been designed for UWB with acceptable performance. A suitable UWB antenna should operate over entire UWB allocated by FCC (3.1-10.6 GHz), it should have linear phase, low dispersion and VSWR 2 throughout the entire band. Feeding the antenna also affect the response of antenna. There are different feeding techniques that have been discussed in this paper. According to the feeding techniques the patch antenna for UWB have been categorized and their results have been concluded which represents comparative analysis of their return loss and other basic parameters. This paper focuses on different UWB antennas, their geometries and design parameters. Studies have been undertaken that covers UWB antenna design fundamentals and techniques and comparison of feeding techniques have been undertaken