A COMPACT HEXAGONAL-TRIANGULAR FRACTAL ANTENNA FOR WIDEBAND APPLICATIONS

摘要

Title: A Compact Hexagonal-Triangular Fractal Antenna for Wideband Applications The present invention proposes a compact hexagonal-triangular fractal antenna for wideband applications such as defence and aerospace communication systems, wireless applications such as WLAN, Wi-Fi, UWB, and X-Band etc. The small sized fractal antenna comprises of hexagonal rings where the sides of the rings are connected by triangular elements and a feeding means is connected to the hexagonal rings. A triangular slotted symmetrical defective ground structure (DGS) with a recess at the center is formed on other side of the substrate to attain a wide bandwidth frequency ranging from 3GHz to 25.2GHz with an offered bandwidth of 22.2GHz. The fractal antenna works at different frequencies for each step of frequency iteration made from hexagonal rings and determines the voltage standing wave ratio (VSWR) and return losses for each variation of frequencies. The radiation produced by the antenna is distributed in symmetric patterns to achieve wideband characteristics.