A Novel UWB Dielectric Resonator Antenna with Dual Notched Bands Yinyan Chen 1 , Yuehe Ge 1 and Trevor S. Bird 2 1 College of Information Science and Engineering Huaqiao University, Xiamen, Fujian Province 361021, China. 2 Antengenuity, PO Box 306, Eastwood NSW 2122, Australia yuehe@ieee.org Abstract—A compact ultra-wideband (UWB) dielectric resonator antenna (DRA) with dual band-notched characteristics is proposed. A shorting conductor is attached to one side of the DRA, to reduce more than half the volume of the antenna. An inverted novel shaped strip is designed to print near the feed probe side, to achieve the dual band-notched characteristics. According to the simulation results, the antenna offers a VSWR<2 bandwidth of 2.9 GHz―11.0 GHz, with the dual notched bands of 5.15 GHz―5.825 GHz (WLAN) and 8.025 GHz―8.40 GHz (ITU), indicating that the antenna is a good candidate for various UWB applications. Keywords—DRA; UWB; dual notched bands. I. INTRODUCTION In recent years, the increasing demands for UWB antennas that exhibit multiband operation in wireless communication systems has received increased attention since the US Federal Communication Commission (FCC) permitted the authorization of using the commercial telecommunication applications at 3.1―10.6 GHz. However, within the designated UWB frequency band, there are several separate wireless frequency bands, such as the WLAN operating at 5.15―5.825 GHz, and the ITU system operating at 8.025―8.40 GHz where interference from the UWB might occur. To prevent these electromagnetic interferences in these bands, UWB antennas with band-notched characteristics have been also proposed. Various band-notched UWB antennas have been designed based on the printed monopole antenna technology. Dielectric resonator antennas (DRAs) have received much attention in the past two decades due to their inherent advantages, such as compact size, high radiation efficiency, wide impedance bandwidth and ease of integration to the wireless systems. Recently, DRAs have been demonstrated [1]-[5] to have the potential for UWB applications. Furthermore, the DRA is quite flexible as a UWB DRA has been proposed with a single band-notch characteristic [6]. In this paper, a compact dual band-notched UWB rectangular DRA is presented. An inversed ψ-shaped patch is designed to print near the coaxial probe side on the UWB DRA, to generate the dual notched bands. By changing the size of the proposed printed patch, the rejection bands can be moved within the operating band of 3.1-10.6 GHz. Specifically, dual notched bands centered at 5.75 GHz and 8.10 GHz are designed in this work. Compared with other UWB antenna designs, the band-notched DRA shows a very compact size without compromising the radiation performance over the FCC band of 3.1 -10.6 GHz. Fig.1. Configuration and parameters of the proposed dual band-notched DRA. ISAP2015 Copyright (C) 2015 IEICE 78