Design of Fractal Antenna For S-Band and X-Band Applications

A fractal antenna that can be used for S-band and X-band applications is proposed in this paper. The antenna is able to be easily integrated into naval radar systems. The antenna is made up of fractal structures that are cross-shaped and organized in stairwell-like repetitions. It is a two-port antenna that receives its feed via coaxial cable. Meta materials are integrated into the design to achieve bidirectional gain and reduce mutual coupling. The proposed antenna is designed using ANSYS Electronic Desktop's High Frequency Structure Simulator (HFSS) with FR4 material. The antenna exhibits multiple operational bands, ranging from 2.58GHz to 3.48GHz for the S-band with gain of 3.7dB and from 8.97GHz to 11.87GHz for the X-band with gain of 5.19dB. This proposed antenna shows good performance in terms of gain, radiation pattern and return loss. It can be widely used in satellite communication and military radar systems.