Polarization reconfigurable dielectric resonator antenna (DRA) backed by plasma artificial magnetic conductor (AMC) ground plane is designed and optimized for 10-GHz applications. The AMC unit-cell consists of a metal cylinder with two pairs of cuts filled with a noble gas. According to the ionization degree of gas in the two pair of cuts, three polarization states are obtained. The AMC unit-cell operates at 10 GHz with ± 90° bandwidth of 26% and axial ratio (AR) bandwidth span from 9.3 to 10.25 GHz. A linearly polarized (LP) cylindrical DRA backed by 4 × 4 AMC ground plane is investigated. A wide impedance bandwidth of 20%, peak gain 7.8 dBi, and AR < 3 dB of 3.2% are achieved. A parametric study on the AMC unit-cell dimensions is presented. The DRA loaded with optimized AMC unit-cells broaden the AR bandwidth from 9.6 to 10.7 GHz (11%). A 13 × 13 unit-cell perforated dielectric reflectarray loading the DRA is used to increase the total gain. A peak gain of 19.5 dBi is achieved with reconfigurable polarization states. A sequential cooperate feeding network is used with 2 × 2 DRA backed by 8 × 8 AMC unit-cells to improve the gain and CP bandwidth. Two chessboard square and triangle arrangements of AMC unit-cells are investigated. The square arrangement improves AR bandwidth to 2.4 GHz, gain to 13.3 dBi, and side lobe level (SLL) below the main beam to − 12.3 dB. Full-wave simulation is used to study and optimize the proposed structures.

由等离子人工磁导体（AMC）接地层支持的极化可重配置介电共振器天线（DRA）是针对10 GHz应用进行设计和优化的。AMC单元电池由金属圆柱体组成，金属圆柱体具有两对充满稀有气体的切口。根据两对切口中气体的电离度，获得三个极化态。AMC单元电池工作在10 GHz，±90°带宽为26％，轴向比率（AR）带宽为9.3至10.25 GHz。研究了具有4×4 AMC接地平面的线偏振（LP）圆柱DRA。实现了20％的宽阻抗带宽，7.8 dBi的峰值增益和3.2％的AR <3 dB。提出了对AMC晶胞尺寸的参数研究。装有经过优化的AMC单元电池的DRA将AR带宽从9.6 GHz扩大到10.7 GHz（11％）。加载DRA的13×13晶胞穿孔介电反射阵列用于增加总增益。通过可重新配置的偏振态，可实现19.5 dBi的峰值增益。顺序协作馈电网络与2×2 DRA，8×8 AMC单位单元支持一起使用，以改善增益和CP带宽。研究了AMC单元电池的两个棋盘正方形和三角形排列。方形排列将AR带宽提高到2.4 GHz，增益提高到13.3 dBi，主波束下方的旁瓣电平（SLL）提高到− 12.3 dB。全波仿真用于研究和优化所提出的结构。顺序协作馈电网络与2×2 DRA，8×8 AMC单位单元支持一起使用，以改善增益和CP带宽。研究了AMC单元电池的两个棋盘正方形和三角形排列。方形排列将AR带宽提高到2.4 GHz，增益提高到13.3 dBi，主波束下方的旁瓣电平（SLL）提高到− 12.3 dB。全波仿真用于研究和优化所提出的结构。顺序协作馈电网络与2×2 DRA和8×8 AMC单元电池一起使用，以改善增益和CP带宽。研究了AMC单元电池的两个棋盘正方形和三角形排列。方形排列将AR带宽提高到2.4 GHz，增益提高到13.3 dBi，主波束下方的旁瓣电平（SLL）提高到− 12.3 dB。全波仿真用于研究和优化所提出的结构。