结合波导缝隙和同轴线结构,提出了一种新型同轴波导缝隙结构实现天线小型化。首先,分析了同轴波导缝隙天线内金属摆线上的电流分布,改进了缝隙形式和摆线设计;然后,利用HFSS软件建立不同缝隙数目的同轴波导缝隙天线模型进行仿真,对比分析驻波带宽和方向图带宽;最后,建立不同缝隙数目的同轴波导缝隙天线有限阵列,对比分析阵列中天线增益和效率。

In order to realize the miniaturization of antenna, a new type of vertical polarization coaxial waveguide slot structure is proposed based on the theory of waveguide slot antenna and coaxial line. Firstly, the current distribution of the metal cycloid on the coaxial waveguide slot antenna is analyzed, and the slot form and cycloid design are improved. Then, a coaxial waveguide slot antenna model with different numbers of slots is built on the HFSS software to simulate the standing wave bandwidth and the bandwidth of the pattern. Finally, a finite array of coaxial waveguide slot antennas with different numbers of slots is established, and the antenna gain and efficiency are compared and analyzed.

TN821