Design of millimeter wave array antenna decoupling construction based on metasurface

The proposed structure is a metamaterial-based coating to reduce the coupling of the array antenna operating in the millimeter-wave band. The metasurface structure is composed of rectangular ring slotted elements in a periodic arrangement. By suppressing the space and surface waves between the array antennas, the isolation degree in the working frequency band (23.8GHz–25.2GHz) can be kept below −25dB.