考虑互耦的波导单元无限大相控阵的分析与设计

【作者】 王超然；

【导师】 王建；

【作者基本信息】 电子科技大学 ， 无线电物理， 2006， 硕士

【摘要】 该文采用积分方程法及模式匹配法对矩形波导单元无限相控阵进行了分析与设计。首先用积分方程法推导了矩形波导矩形栅格无限相控阵的积分方程，并用矩量法求解；然后介绍了分析无限相控阵的另一应用广泛的方法——模式匹配法；接着阐述了矩形波导三角形栅格无限相控阵的分析方法；此外，还分析了装有宽角匹配装置(波导口径加膜片，阵列外加介质层)的无限相控阵，并分析了其宽角匹配特性。 本文通过编程仿真计算，得到了矩形波导矩形栅格无限相控阵和矩形波导三角形栅格无限相控阵的反射系数和阵元辐射方向图，同时计算了加有膜片和介质层的阵列的反射及辐射特性。计算实例验证了该算法的有效性，计算结果可直接工程应用。 另外，本文还应用仿真软件HFSS对以上实例进行仿真后处理，并将软件仿真结果与编程仿真结果及文献结果进行比较分析。更多还原

【Abstract】 In this thesis, waveguide element infinite phased-array antennas has been analysised and designed by integral equation method and mode matching method. First, the integral equation of an infinite phased array of rectangle waveguide with rectangle grid was deduced and its solution by moment method was presented either. And then, another applied widely analysis method - mode matching method was introduced. Following, the paper represented the analysis method of triangle grid phased array. Moreover, the infinite phased array with WAIM (added with metallic iris plate on each aperture of waveguide element and covered with dielectric sheet) in front of the array was analysised and its property of wide-angle matching was studied, too.The computational examples show the reflection characteristics and the radiation characteristic of rectangle waveguide infinite phased arrays with rectangle grid or with triangle grid. At the same time, characteristics of the same constitution array but covered with iris plate and dielectric sheet are computed. The algorithm’s validity is verified by above computational examples. The computational result can be applied in project.Separately, the above examples are operated by simulation post treatment method with HFSS simulator. Comparison and analysis among software imitating results、 program imitating results and literature results are exhibited.更多还原