부산대학교 도서관

In this work, we build and evaluate a unique wideband 8-antenna itself. Multiple-Input + Multiple-Output (MIMO) system that is optimized for the fifth generation of radios (N77/N78/N79) mobile phone applications using an analytical method. The MIMO antenna system uses a specifically designed coupled-loop antenna to accomplish its wide bandwidth while operating in the 3.3-5.0 GHz frequency range. Three separate coupling portions are included into this coupled-loop antenna, which is positioned at its center top and two sides. The coupled-loop antenna may sustain three resonance waves: 0.5λ, 0.75λ, + 1.0λ modes because to its unique configuration. The innovation's most revolutionary characteristic is that it can excite the 0.75λ methods, which has never been reported before. These three vibration modes work in concert to provide the broad bandwidth that is attained. The performance evaluation of the suggested 8x8 MIMO antenna system includes an analysis of channel capacity, antenna isolation, and envelope correlation coefficient. The antennas are manufactured and measured in physical prototypes that are placed around the edges of mobile phones and configured as a 8-antenna MIMO system. The results show excellent agreement between simulation and measuring, supporting the usefulness of the suggested MIMO antenna design.