Bandwidth and Gain Enhancement of Multiband Fractal Antenna Based on the Sierpinski Carpet Geometry

In this paper, we have achieved a compact multiband fractal antenna based on Sierpinski carpet geometry. The simulation of the proposed antenna is done by CST Microwave Studio EM simulation software. The Sierpinski carpet fractal antenna proves that it is capable to create multiband frequencies. There are four resonant frequencies appeared at 0.85 GHz, 1.83 GHz, 2.13 GHz and 2.68 GHz. Simulated results indicates that the return loss is better than 15 dB, the VSWR is less than 1.3,the directivity is greater than 6dBi&the gain is more than 6dB in each band. So this fractal antenna can be suitable for fixed microwave&aviation applications.