Unit cell structure of Huygens' Metasurfaces Reducing Beam Squint in Series-Fed Array

Huygens' metasurfaces have attracted attention as a method for constructing thin lenses. In this report, we focus on I-shaped elements as an example of a structure of Huygens' metasurface and propose a lens that can change the pass-through phase at 28 GHz with the maximum of −2 dB loss and almost no phase change at 25.75 GHz using Huygens' metasurface.