Composite Antenna for Ultrawide Bandwidth Applications: Exploring Conceptual Design Strategies and Analysis

In the recent era of wireless communication, ultrawide bandwidth (UWB) technology is in high demand because of its wide application in short-range and high-speed data communication. In 2002, the frequency spectrum for UWB systems was decided by the U.S. Federal Communication Commission to be between 3.1 and 10.7 GHz [1]. Three types of radiators support UWB in commercial appliances: 1) microstrip, 2) slot, and 3) dielectric resonator antennas (DRA). Microstrip and slot antennas are compact in size, but they suffer from low-gain characteristics. This drawback can be overcome by DRA, but at the expense of size [2], [3].