Hilbert shape MTM structure

The proposed antenna structure is designed for modern wireless communication systems. The antenna structure is consistent with twelve-unit metamaterial (MTM) unit cells. Therefore, the antenna size is miniaturized effectively to 30 × 40mm2 which is equivalently about where is the free space wavelength at 2.7GHz. This is achieved by conducting the use of Hilbert shape MTM structure with T-resonator induction structure. The antenna structure is printed on a single side substrate to cover the frequency bands from 2.7GHz to 3.7GHz and 5.4GHz to 5.6GHz. Such antenna is found to provide a maximum gain of 2.2dBi at first and the second band of interest. Next, proposed antenna is found to be circularly polarized at 3.3GHz and 5.6GHz. The proposed antenna performance is simulated numerically using CST MWS software package with all design methodology that is chosen to arrive to the optimal performance. Then, the optimal antenna design is tested numerically using HFSS software package for validation. Finally, an excellent agreement is achieved between the two conducted software results.