A pattern reconfigurable antenna offers diverse pattern configurations and beam steering to cater the congested signal environment problem while maintaining the performances and operating frequency, as well as increasing the signal and data security. The pattern reconfigurable antenna using EBG structure is presented in this paper for beam-steering configurations. Most of the previous works proposed the PIN diode on the radiating patches, which caused the degradation of its performances. In this work, the structure offers good efficiency as the RF switches are not embedded to the radiating patches. A dual-band slotted pattern reconfigurable antenna using EBG structure is designed and analyzed. The EBG patches are located at the right and left of the radiating edge of the antenna. The EBG is designed so that its surface wave of band gap covers the radiation of the antenna. As a result, the surface waves excited by the patch antenna are prohibited from propagating by the EBG and caused the radiation pattern to be tilted to another side. The operating frequency of the proposed antenna is 2.45 GHz and 5.8 GHz for the dual-band antenna. The proposed antenna is capable of having beam shifting at three different angles (0°, +26°, and −26°).

图案可重构天线可提供多种图案配置和波束控制功能，以解决拥塞的信号环境问题，同时保持性能和工作频率，并提高信号和数据安全性。本文提出了采用EBG结构的方向性可重构天线，用于波束转向配置。先前的大多数工作都在散热片上建议使用PIN二极管，这会导致其性能下降。在这项工作中，由于RF开关未嵌入到辐射贴片中，因此该结构具有良好的效率。设计并分析了采用EBG结构的双频缝隙图案可重构天线。EBG贴片位于天线辐射边缘的右侧和左侧。EBG的设计使其带隙表面波覆盖天线的辐射。结果，由贴片天线激发的表面波被EBG禁止传播，并导致辐射图向另一侧倾斜。对于双频天线，建议的天线的工作频率为2.45 GHz和5.8 GHz。所提出的天线能够以三个不同的角度（0°，+ 26°和-26°）进行波束移位。