Abstract
A novel compact four-element antenna system is presented for MIMO applications. The MIMO antenna has four slot radiators perpendicular to each other with two radiating elements on the top layer of the substrate, and the two other elements are on the bottom layer. This MIMO antenna has an overall compact size of 60 × 60 × 0.8 mm3. The four antenna elements are in inverse positions on both sides of the dielectric material to accomplish a minimal size. Furthermore, the best possible arrangement of components along the dielectric material enhances the isolation between components besides the use of decoupling structures. The proposed MIMO antenna can operate at WLAN band running from 2.4 to 2.485 GHz, and WiMAX band running from 3.4 to 3.6 GHz. The four elements MIMO antenna has dual independent modes of operation to increase the data rate for each application independently since the first mode resonates at 2.46 GHz, and the second mode resonates at 3.5 GHz. A closed consensus between simulation and measurement results confirms the effectiveness of this MIMO antenna for the use in multi-band environments with high isolation level, elevated DG, and very low ECC.
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