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By computer simulation and actual fabrication, it is demonstrated that multiband operation with circular polarization of radiation may be achieved by the combination of square and Giuseppe Peano fractal geometries realized on a two layer microstrip antenna. The antenna feed is designed by an electromagnetic coupling system. The proposed antenna configuration also achieves some degree of miniaturization, which makes it suitable for wireless applications. The antenna characteristics, such as return loss, axial ratio and radiation patterns achieved by the proposed structure attest to its effectiveness as a mobile radiator.