PROJECTS

Wireless Local Area Network (WLAN) has undergone rapid development in recent years. WLAN (2.45 GHz) and WiMAX (5.8 GHz) communications require cost and size efficient antennas with appropriate bandwidth for communication applications. Ultrawide Band (UWB) Antenna is a type of antenna which has a large bandwidth and covers a large number of communication bands. Numerous UWB antennas exist today, such as planar, printed monopole/dipole, microstrip, dielectric resonator, wide-slot, and metamaterial antennas. These designs tend to be large in size, difficult to manufacture, and expensive. Metamaterials involve a lot of complex fabrication issues and require sophisticated technology. Mono/dipole antennas are comparatively easier to construct but have low gain and narrow bands. Previously used patch antennas suffer from restricted bandwidths and are size inefficient. Thus, as an alternative, Dielectric Resonator Antennas (DRAs) are investigated. Some of the advantages of DRAs include low cost, size efficiency, low conductive losses, high radiation efficiency, and flexible feed mechanisms. Dielectric resonators have been used as frequency-specific filters in microwave circuits. It soon gained importance as a radiating element, and by the early 1980s, the size efficiency potential and high-frequency applications created a new domain of research in DRAs. Nowadays, DRA technology is a viable substitute for outdated and conservative antenna designs for wireless communications. DRA materials generally involve intricate designs and setup.