SIW耦合馈电阵列天线

发布时间：2018-06-19 21:54

本文选题：阵列天线 + 宽带　；参考：《微波学报》2017年04期

【摘要】：提出一种新型宽带、结构紧凑的基片集成波导(SIW)背腔阵列天线的设计方法。所设计的SIW阵列由紧密相连的背腔构成馈电网络,每个背腔上开宽缝作为辐射单元。SIW背腔天线单元紧密排列,主要通过单元间感性耦合窗耦合馈电。SIW背腔既是辐射单元又能实现能量分配,不需加载额外的馈电网络,因此该阵列结构十分紧凑。工作在20 GHz频段的2×2 SIW耦合馈电阵和4×4 SIW耦合馈电阵已加工实现,仿真和测试结果表明所提出的SIW阵列设计方法简单、阵列结构紧凑、天线辐射性能良好。另外,本文研究了高增益大规模阵列天线的组阵方法。在2×2 SIW耦合馈电阵的基础上,采用8×8 SIW并联馈电网络加载天线子阵的方法设计了16×16宽带高增益SIW阵列天线并进行了加工测试。结果表明,采用这种组阵方法,天线阵阵元排布紧密,天线具有带宽宽、增益高、损耗低等优点。
[Abstract]:A novel wideband, compact substrate integrated waveguide (SIW) back-cavity array antenna design method is presented. The designed SIW array consists of closely connected back cavities to form a feed network, each with a wide slit on the back cavity as a radiation unit. The structure of the array is very compact because it is mainly coupled by the inductive coupling window between the elements. The back cavity of SIW is not only a radiating unit but also an energy distribution unit without the need to load an additional feed network. The 2 脳 2 SIW coupled feed array and 4 脳 4 SIW coupled feed array working at 20 GHz band have been machined. The simulation and test results show that the proposed design method is simple, the array structure is compact, and the antenna radiation performance is good. In addition, the array method of high gain large-scale array antenna is studied in this paper. Based on the 2 脳 2 SIW coupling feed array, the 16 脳 16 wideband high gain SIW array antenna is designed and fabricated by using 8 脳 8 SIW parallel feed network loading antenna subarray method. The results show that the array elements are arranged tightly and the antenna has the advantages of wide bandwidth, high gain and low loss.
【作者单位】：陆军工程大学;国防科技大学;
【分类号】：TN820.15

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