DESIGN AND ANALYSIS OF MULTIPLE ANTENNA STRUCTURES FOR ULTRAWIDE BANDWIDTH
Praveen Kumar, M. M. Manohara Pai, Tanweer Ali
Abstract
Ultrawideband (UWB) technology has a one-of-a-kind approach for high-speed short-range wireless communication applications. Designing an efficient UWB antenna is a challenge because it must cover a wider spectrum, have reliable gain, and good impedance matching over the operating frequency band. Several structures have been proposed in recent years for the design and development of UWB antennas. In this paper, a compact six different antenna structure is investigated and presented for ultrawideband (UWB) applications. The presented UWB antenna structures have hybrid geometry and are composed of a modified radiating element on the top of the FR-4 substrate having a thickness of 1.6 mm. A modified ground plane is at the bottom of the substrate with 50Ω microstrip line feed. Amongst proposed UWB antenna structures, antenna 5 exhibit the magnitude of S11<-10 dB between the frequency range 2.4 to 14.3 GHz which accounts for a fractional bandwidth of 142%.