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2025-05-22
High-Gain Dual-Band Metasurface MIMO Antenna for Enhanced 5G and Satellite Applications
By
Progress In Electromagnetics Research C, Vol. 156, 13-22, 2025
Abstract
In this paper, a novel single-layer dual-band metasurface MIMO antenna suitable for high-density 5G base stations, satellite terminals and IoT devices is proposed. The antenna utilizes Characteristic Mode Analysis (CMA) to optimize the patch dimensions, achieving independent design for the low and high-frequency bands. It also suppresses surface waves through a ground triple-slot structure. Additionally, the antenna abandons the traditional coplanar waveguide (CPW) and innovatively adopts an H-shaped slot feeding structure. This groundbreaking design successfully eliminates the need for complex matching networks and multi-layer stacking structures. Simulation and measurement results show that the MIMO antenna achieves an isolation below -22 dB and envelope correlation coefficient (ECC) less than 0.0025 in two operating frequency bands (4.13-5.94 GHz with a relative bandwidth of 36%; 7.6-8.4 GHz with a relative bandwidth of 10%), with a peak gain of 10.75 dB. Additionally, the antenna exhibits a diversity gain (DG) greater than 9.9 dB, with aperture efficiencies of 72% (low-frequency) and 36.8% (high-frequency). Compared with existing designs, the MIMO antenna proposed in this paper shows significant improvements in isolation, bandwidth flexibility, and structural simplicity.
Citation
Hanbo Feng, Zhonggen Wang, Wenyan Nie, and Ming Yang, "High-Gain Dual-Band Metasurface MIMO Antenna for Enhanced 5G and Satellite Applications," Progress In Electromagnetics Research C, Vol. 156, 13-22, 2025.
doi:10.2528/PIERC25041001
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