A New Fractal Multiband Microstrip Patch Antenna Design for Wireless Applications

In this paper, a new compact multiband patch microstrip antenna design is presented as a candidate for use in modern multi-functions communication systems. The proposed antenna design is fractally generated using Koch fractal curve geometry applied to the conventional square microstrip patch antenna. Antenna structures resulting from the successive iterations in the proposed fractal generation process show a considerable size reduction compared with the conventional microstrip patch antenna designed at the same frequency using the same substrate material specifications. Simulation and theoretical performance of the resulting antenna structures corresponding to the different fractal iteration levels have been carried out using method of moments (MoM) based software package IE3D, which is widely used in the fields of microwave research and industry. Simulation results have proved the multi-resonant behavior of the presented antenna structures besides the considerable size reduction gained. The results also show that these antenna structures possess adequate radiation performance.