A novel UWB circular CPW antenna with triple notch band characteristics

This paper presents a novel band-notched circular CPW antenna for ultrawideband (UWB) communication in WiFi and WiMAX applications. The antenna is designed for 3.1-10.6 GHz and added some lower frequencies to this band by novel notch method. This paper applies band-notched antenna method in order to design two lower frequencies in antenna at 2 GHz and 2.4 GHz. These frequencies are applied for DCS, PCS, UMTS, wireless applications and at IEEE 802.11b with 17.5% and 6.5% bandwidths. This paper has investigated the effect of a slot and a metallic ring on the antenna and the effect of their combination simultaneously. The current study shows the simulation of prototype antenna with full-wave numerical EM simulator software HFSS and CST Microwave Studio by finite element method (FEM) and finite difference time domain (FDTD). The total size of antenna is 52 mm × 52 mm × 1.6 mm, it is designed on FR4 low-cost substrate and connected to CPW 50 O feed line.