Hybrid EBG-DGS mm Wave MIMO for 5G/6G Devices
Abstract
Researchers present a hybrid Electromagnetic Band Gap (EBG) and Defected Ground Structure (DGS) aided small 8x8 mmWave MIMO antennas for 5G/ 6G smart devices. A standard compact mmWave system has significant mutual coupling effect, limited isolation, and poor MIMO antenna performance. The design solution overcomes these difficulties. Designing a framework that limits surface wave propagation and electromagnetic interference in the circuitry increases isolation and reduces electromagnetic interference between antenna parts. The planned antenna operates in the Ka-band mmWave range. Orthogonal antenna element arrangement and hybrid decoupling improve isolation and performance of the proposed MIMO antenna system. With a reflection loss of less than -10 dB and isolation of over-25 dB between ports, the antenna has a wide impedance bandwidth. It boasts radiation efficiency of 85% and a radiation gain above 9 dBi. ECC values around 0.01 and DG around 10 dB demonstrate the antenna's excellent diversity performance for reliable high-speed data transmission. Simulations and measurements match, proving the hybrid EBG-DGS method works. Compared to the current mmWave MIMO antenna designs, the suggested antenna design performs better in isolation, size, and diversity, making it a great candidate for 5G/6G smart wireless systems.