Reconfigurable Array Designed for Directional EM Propagation using Energy Band Theory of Photonic Crystals

作者：Yanming Zhang, Zhi Cao, Guizhen Lu, Dongdong Zeng, Ming‐De Li, Ruidong Wang · 发表于：The Applied Computational Electromagnetics Society Journal (ACES) · 年份：2018 · 被引用次数：2 · 研究领域：Photonic Crystals and Applications、Metamaterials and Metasurfaces Applications、Microwave Engineering and Waveguides

A type of reconfigurable array consisting of metal rods was designed for directional electromagnetic (EM) wave propagation at microwave frequency. By adding or removing a part of metal rods, the designed array can be reconfigured between a hexagonal-lattice array and a rectangular-lattice array. As a result, the directional radiation pattern can be changed. In this study, the method of designing metal photonic crystals array is proposed. Dispersion curves of Energy band theory of photonic crystals were computed and integrated with the theory of finite thickness periodic arrays. Measurement results are well consistent with the simulation results, suggesting that the antenna as a radiation source located in the center of the hexagonal-lattice array could reach good directionality at the designed frequency. When the array is transformed into the rectangular-lattice array by adding or removing a part of metal rods, the directional radiation pattern can be changed ±30 degrees at the same frequency.