Abstract: In this paper, I shaped fractal antenna for WLAN and WiMAX applications is proposed. Antenna is designed and simulated by using FR4 substrate, the design is a fractal antenna with modified ground structure. The proposed antenna has been designed with scaling factor of one-third. Fractal antennas are found to be advantageous because of their small size and multiband functionality. The design and simulation of the antenna is carried out using CST microwave Studio simulation software. The simulated results present good performances in term of radiation pattern and matching input impedance. This antenna is suitable for WLAN and WiMAX.

Keywords: Flame Retardant 4(FR4), Fractal Antenna, Computer Simulation Technology (CST), WiMAX, WLAN.