文档介绍：摘 要
摘 要
通过在波导上切割形成辐射单元的波导缝隙天线具有副瓣低，效率高，口径
分布可以独立控制，结构紧凑，加工和安装简单等优点，它广泛用于地面、舰载、
导航、气象等领域。
本文用并矢格林函数[1-4]求出波导内部、缝隙内部以及波导外部半空间的三个
区域的磁场，结合连续性边界条件来建立一组积分方程，并运用矩量法[17-21]来求
解该积分方程。应用电路原理，将单个矩形波导宽边纵缝等效为并联导纳，采用
矩量法求解得到的结果来完成对其导纳参数的提取。由阵列综合[11,26]技术得到阵列
天线的口径分布，然后运用Elliott的设计原理[23-25]以及作者自己推导的设计公式来
快速设计波导宽边纵缝阵列。
作者通过Babinet原理[7]将缝隙等效为向半空间辐射的对称振子，来快速分析阵
列天线的方向图，应用等效传输线原理来分析阵列中每根波导的A参数，并最终转
换成我们感兴趣的输入驻波比和天线效率等天线性能指标。
文章中的所有结果均与仿真软件Ansoft的仿真结果进行了比对，得到了非常令
人满意的结果。通过对所得到的数据的分析，作者对Elliott的设计原理做出了一定
修正，并且验证了这种修正的正确性。
关键词： 波导 纵缝 阵列天线 并矢格林函数 矩量法 阵列综合
Abstract
Abstract
Waveguide slots antennas were widely used in navigation, meteorological
analysis,and most military radar due to their high efficiency, low sidelobe, controlled
aperture distribution and compacting structure. Besides, waveguide slots antennas are
also very easy to feed and install. They were and will be the focus in all these related
fields.
In the thesis, the author analysed a single longitudinal slot on the broad wall of a
rectangular waveguide with method of moment (MOM), which is based on the dyadic
green’s function theory and boundary continuity theory. With the obtained MOM results,
the single slot was equivalented to a shunt admittance using circuit principle. And the
admittace parameters was extraced in a further step. Through array synthesis technique,
we acquired the necessary aperture distribution of the slots. Finally, we design the
longitudinal slots array fastly with the help of Elliott’s idea and three key formulas
which were derived by the author.
Applying Babinet principle, we compared the slots to the dipoles which only
radiated to the related half space. Then the radiation pattern of the slots array could be
calculated swiftly. We calculated the input standing wave ratio and the antenna
efficiency by equaivalenting