EBG-Loaded Dielectric Resonator Antenna for Triple Band-Notch Characteristics

A novel configuration of ultra-wideband (UWB) antenna with triple band-notched characteristics is introduced in this article. The design consists of a modified U-shaped dielectric resonator placed at the edge of a rectangular radiating patch for achieving UWB performance. Two configurations of Archimedean spiral shaped EBG unit cells are then designed and implemented together to realize the triple notch characteristics. The antenna geometry is modeled on Rogers RO3003 (tm) substrate having an overall dimension of 25×30×0.762 mm
³
. The proposed antenna covers the frequency range 2.4 GHz-10.65 GHz with VSWR ≤ 2 over the entire range except at the notch frequencies at 4.5 GHz, 5.1 GHz and 9.1 GHz, respectively. Standard behavior of radiation characteristic along with enhanced gain pattern is observed for the suggested antenna configuration. Simulation analysis manifests that the proposed antenna has the potential to avoid interferences from existing narrowband communication techniques and thus suitable for UWB communication systems.