从多模馈电网络子结构的特性出发,对可能获取子结构三端口散射参数的方法进行了分析、比较,在现有二端口矢量网络分析仪的基础上,考虑了端口的阻抗匹配,对馈电网络子结构的三端口散射参数测量进行了实验研究,并应用混合模式散射参数验证了测量方法的准确性,为整个多模馈电网络的设计和优化提供有力的支持.%From the characteristic of the substructure in multimode feed network, some methods for three-port scatter parameters are analyzed. Based on the applying of the available two-port vector network analyzer (VNA), considering the port impedance matching, the three-port scatter parameters of substructure in multimode feed network are researched. The mixed-mode S-parameters of three-port networks are used to verify the actual measured data. The effective foundation for the design and optimization of the multimode feed network is provided.
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