A Novel Design for Meta Material Inspired Compact UWB-MIMO Fractal Antenna With Reduced Mutual Coupling

There are many efforts done by the several researchers around the world, to combine fractal geometry with electromagnetic theory have led to a world of new and innovative antenna designs. In this report, we provide a research on the fractal antenna in the field of fractal antenna engineering. The research for the fractal antenna is focused in the two areas: the first deals with the design of fractal antenna elements, and the second deals with the applications of the fractal antenna. From the previous research it was shown that Fractals have no characteristic size, and are generally composed of many copies of themselves by different scales. This unique property of the fractal antenna plays a very significant role in the size reduction and enhancement of bandwidth. This research focuses on a new Meta material inspired UWB-MIMO fractal antenna. Antenna loaded with meta material structure achieved an impedance bandwidth of 5.8-15 GHz (98.63 %). Mutual coupling between the two radiating elements is obtained to be less than -25 dB. The patterns of radiation are stable over the operating range and a peak gain of 6.02 dB is obtained. Throughout the operating range, the radiation efficiency is > 88%. The obtained Envelope correlation coefficient-ECC (<0.07) and diversity gain (>9.98) proved that antenna has good diversity performance. The measured and simulated results are well adjusted, so that the antenna can be used for ultra-wide band applications. Simulation is conducted using HISS software is used for the simulation and FR4 epoxy material is used to design the substrate.