Combined fractal geometries for the design of wide band microstrip antennas with circular polarization

In this paper, we propose the combination of several fractal geometries for microstrip patch antenna for the achievement of their miniaturization and multi banding characteristics. By placing air gaps under the microstrip patches (actually making suspended microstrips) the bandwidths of antennas are drastically improved. By cutting appropriate rectangular and triangular slits as perturbations on the edges of fractal geometries, circular polarizations may be realized in the radiation patterns.