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ABSTRACT A multiantenna system comprising of an eight‐element antenna array in mobile terminal is presented. In this work, two sets of eight‐element antenna structures based on capacitive coupling element and inverted‐F antennas operating at 3400–3600 MHz long‐term evolution frequency band are designed. The structures are estimated to achieve a good effective diversity gain in both uniform and nonuniform environments. It is also shown that the proposed structures achieve an ergodic multiple‐input multiple‐output (MIMO) capacity of only 1.2 bit/(s Hz) lower than the capacity achieved by ideal uncorrelated antennas. A prototype is fabricated to validate the simulation results. The result shows that the structure exhibited the highest mutual coupling of −10 dB across the required frequency band. Therefore, the proposed structure is a good candidate for implementing diversity and MIMO in mobile terminals. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1323–1327, 2014
Al‐Hadi et al. (Tue,) studied this question.