Multiband and Wide Band Octagonal Fractal Antenna for Telecommunication Applications

Abstract

The new proposed triband and ultra-wideband (UWB) fractal antenna design in this letter is based on octagonal fractal geometry with miniaturized dimensions of $45\times 42\times 1.6 mm^{3}$. The antenna support is the dielectric FR4 with a permittivity of 4.4, and a dielectric loss tangent of 0.02. The patch is alimented by a microstrip line of impedance 50 ohms. The antenna is designed and simulated using the High-Frequency Structure Simulator (HFSS) and the results are confirmed by the CST studio. A high gain is achieved which can reach 8.7 dB and an ultra-wideband which gets to 4.2 GHz. With this structure, the antenna can cover the covering (2.4-2.484 GHz/5.15-5.825 GHz) WLAN, (2.5-2.69 GHz/3.4-3.69 GHz/5.25-5.85 GHz) WiMAX, (2.5-2.69 GHz) LTE, (2.4-2.4835 GHz) Bluetooth, (2.4-2.490GHz/3.6575-3.690GHz/5.180-5.825GHz) Wi-Fi, (4–8 GHz) C band and (8–12 GHz) for X band applications.