Design of High Gain Antenna Based on Transmissive Huygens Metasurface

Based on Huygens metasurface technology, a transmissive electromagnetic metasurface antenna is designed in this paper. According to the traditional symmetric transmission metasurface structure model, an asymmetric chain ultra-thin Huygens metasurface element is designed. This metasurface element can realize the full transmission phase coverage on the basis of good transmission performance. Combing the 3-bit coded transmissive metasurface with the horn antenna, the antenna achieves good radiation performance, with a maximum gain of $\mathbf{1 0 . 4} \mathbf{ d B i}$ at $29.1 \mathbf{G H z}$ and an antenna radiation efficiency of $\mathbf{9 5 \%}$..