Design of a Novel UWB Hexagonal Patch Antenna having Three Notched Band Features

Abstract

A UWB hexagonal patch antenna with three band-stop features is suggested in this article having a hexagonal shaped radiator fed with microstrip line with “I”, “C” and Inverted “U” shaped slots to attain the band notch characteristics. The dimensions of the suggested antenna are 30mm×28mm×1.6mm. The design is printed on FR4 substrate of permittivity 4.6 and loss tangent 0.02. The antenna reports a substantial bandwidth from 2.65 GHz to 11.3 GHz. Out of this 8.65 GHz range, the VSWR is less than 2 except at three notch bands for WiMax system (3.3 to 3.7 GHz), WLAN system (5.15 to 5.85 GHz) and ITU (7.95 to 8.4 GHz). The proffered antenna has a stable gain in the entire range of 8.65 GHz except the notch bands. The radiation pattern of this antenna is nearly omnidirectional.