Design of S/Ka dual-band shared-aperture Massive MIMO antenna array for 5G communication

摘要

In this context, a shared-aperture design of S/Ka dual band Massive MIMO antenna array is proposed for 5G communication. The antenna array contains a 2×2 S-band MIMO array and an 8 × 8 Massive MIMO array. The operating frequency covers the 5G commercial frequency range. The S-band antenna utilizes a layer of metasurface to achieve an extremely low profile, which is transmissive for S-band antenna and also acts as an extended ground plane for Ka-band antenna array. A stack-up structure is adopted for shared aperture design with Ka-band array located at the centric top of S-band array. The simulation results suggest that the shared-aperture antenna array with quite low profile has good polarization isolation, antenna element isolation as well as S-Ka dual-band antenna isolation.