Planar Wide-Band MIMO Antenna using a Modified EBG Structure

A planar MIMO antenna using a modified EBG structure to increase bandwidth is proposed in this work. The antenna is printed on a Rogers RT-5880 dielectric substrate with a 40 × 20 x 0.787 mm size. Two hexagonal patch antennas in a MIMO array are placed in front of an EBG structure. The EBG structure is made using an array of 4 by 4 cells. Each cell resonates at 8 GHz. The measurement shows that the antenna operates over a bandwidth of7.3 GHz GHz (3.69 to 10.99 GHz) with a maximum gain of 10.4 dBi. The EBG structure improved the gain and the radiation pattern. A Good agreement between simulations and measurements was obtained. The proposed antenna could be used for ISM, 5G, IoT, and S-Band (radar and Satellite) applications.