A Metamaterial Inspired Frequency Reconfigurable Koch Snowflake Fractal Antenna for Wi-Fi/Wi-MAX/WLAN/C/X band Communications

The rapid advancements in the wireless technology requires antennas which are compact, miniaturized and suitable to serve multi wireless services. Fractal antennas have been proved as better radiating elements in this scenario. In this paper a 2-order Koch snow flake fractal antenna of volume 29.6 x 35.7 x 1.6mm
³
is designed and developed on FR4-epoxy with Ԑ
r
=4.4. A metamaterial SRR is placed on the ground of this antenna aiming to meet multiband response. To reconfigure the frequency bands a PIN Diode ‘D’ is placed on the strip line feed which is the proposed structure in this case. The simulations are carried out by using HFSS tool over the frequency range of (1 GHz -12GHz) and the radiation parameters like S(1,1)dB, VSWR values are reported. The simulation results producing 7 frequency bands which covers GPS/Wi-Fi/WLAN/C-band/X band wireless communications. The switch off condition of the Diode will reject the GPS, Wi-Fi, Wi-MAX and X bands effectively.