双极化微带贴片天线阵的研究与设计

【作者】 杨向华；

【导师】 蒲仁璧；

【作者基本信息】 中国工程物理研究院北京研究生部 ， 物理电子学， 2002， 硕士

【摘要】 本文以腔模理论—格林函数法、多端口网络理论为工具，分析了两种结构的双极化微带贴片天线辐射单元，并分析了由这两种单元组成的四元直线阵。 首先，介绍分析了双极化微带贴片天线阵所要涉及的一些基本理论。其中着重介绍了多端口网络理论。 其次，本文详细地分析了两种不同馈电形式的双极化微带贴片天线单元，分别计算了它们的输入阻抗、隔离度和辐射图形，并与实测结果进行比较。 最后，本文研究了由上述单元组成的天线阵列。通过对阵列天线的分析比较，讨论了就再入遥测系统极化分集性能而言，角馈双极化阵列要优于边馈双极化阵列。更多还原

【Abstract】 Two dual-polarization microstrip patch antenna units and their arrays are analyzed in this paper by means of Cavity theory, Green Function Method and Multiport Network Theory.Firstly, some basic theories relevant to dual-polarization microstrip patch array antenna are introduced in this paper, especially the multiport network theorys.Next, two dual-polarization microstrip patch antenna units are analyzed in detail. Its performances such as input impedance, isolation, radiation pattern are computed and calculated. They are also compared with the measured result.Last, the array antenna is analyzed and designed in detail. From analyzing and comparison, the performance of corner-fed array antenna is superior to that of side-fed array antenna and more suitable to re-entry diversity receiving.更多还原