Novel Ultra Wide band Antenna With Multiple Bands Rejection Capabilities

Abstract

The Federal Communication Commission (FCC) allocation for UWB radio applications ranges from 3.10 to 10.60 GHz. The allocated frequency band has created an exciting challenges and opportunities for the researchers. One of the main focus of the researchers in this regard was designing an antenna. But over the span of time various compact and even the most miniaturized antennas have been developed by the researchers. But when these antennas have been implemented inportable UWB devices the phenomenon of interference has been observed. So designingUWB antenna got another important challenge of removing the electromagneticinterference. In order to remove these interferences researchers develop the concept of designing band-notch antennas. As UWB frequency band interfere with the nearby frequency bands such as WIMAX (3.30ð€€€3.60 GHz), INSAT (4.50ð€€€4.71 GHz), lower WLAN (5.150ð€€€5.350 GHz) and Upper WLAN (5.750ð€€€5.820 GHz). The main objective of this dissertation is to build an antenna for UWB (3.10ð€€€10.60 GHz) frequency band with a notching characteristics in the WIMAX (3.30ð€€€3.60 GHz), INSAT (4.50ð€€€4.71 GHz), lower WLAN (5.150ð€€€5.350 GHz) and Upper WLAN (5.750ð€€€5.820 GHz) frequency bands. Moreover, the antenna must be physically compact,having planar profile, sufficient impedance bandwidth and nearly omni-directionaland advantageous radiation pattern.