A new design of the double dielectric resonator antenna (DRA) fed by a printed ridge gap waveguide for beam-switching applications based on frequency selective surfaces (FSSs) is presented here. The dual-sided printed FSS element works in its reflection mode and comprises a slotted square C-shaped patch on the top layer and a square strip on the back plane. Therefore, the beam switching can be implemented by loading the proposed FSS array over and in the middle of DRAs. Loading the antenna with two layers of 3 × 3 FSS unit cells results in ±77° beam switching and a 3.16 dBi gain enhancement at 28 GHz. Simulation and measurements confirm the operation of the proposed antenna, with good matching and gain observed.

中文翻译：

---

基于FSS的28 GHz波束转换脊隙介电共振器天线，用于5G应用

本文介绍了一种新设计的双介电共振器天线（DRA），它由印刷的脊隙波导馈送，用于基于频率选择表面（FSS）的波束切换应用。双面印刷的FSS元件以其反射模式工作，并且在顶层包括开槽的方形C形贴片，在背面上包括方形带。因此，可以通过在DRA之上和之中加载拟议的FSS阵列来实现波束切换。在天线上加载两层3×3 FSS单元会导致±77°的波束切换和28 GHz的3.16 dBi增益增强。仿真和测量结果证实了所建议天线的运行，并具有良好的匹配性和增益。