基于RIS 的高度小型化双频微带天线设计

Design of Highly Miniaturized Dual-band Microstrip Antenna based on RIS

设计了一种同轴馈电的高度小型化双频微带天线。该天线采用RIS结构、Giuseppe Peano分形理论、短路针加载这三种技术来实现高度小型化与双频段特性,并在接地面开槽以等效地引入阻抗匹配元件。通过使用HFSS对天线进行仿真优化,得到了天线尺寸参数。仿真结果表明,天线的工作频段为2.27~2.34 GHz、4.37~4.79 GHz,并且天线在低频段的最大增益可达1.628 dBi,高频段最大增益可达6.9 dBi,辐射性能良好。贴片尺寸仅为10 mm×10 mm,与工作于2.3 GHz的普通贴片天线相比,该天线的贴片尺寸缩减了约69%。该天线不仅可以双频工作,而且贴片尺寸很小。

A highly miniaturized dual-band microstrip antenna with coaxial feed is designed.The antenna adopts three techniques of RIS structure,Giuseppe Peano fractal technique and shorting post to achieve high miniaturization and dual-band characteristics,and slotted on the ground surface to introduce impedance matching elements equivalently.By using HFSS to simulate and optimize the antenna,the antenna size parameters are obtained.The simulation results show that the working frequency band of the antenna is 2.27~2.34 GHz and 4.37~4.79 GHz,and the maximum gain of the antenna in the low frequency band can reach 1.628 dBi,and the maximum gain in the high frequency band can reach 6.9 dBi,and the radiation performance is fairly good.The patch size is only 10 mm×10 mm,and compared with the ordinary patch antenna working at 2.3 GHz,the patch size of the antenna is reduced by about 69%.The antenna not only can work in dual frequency,but also has a small patch size.