基于不同边界条件的SIW谐振腔导模场分析及应用

发布时间：2019-07-05 18:48

【摘要】：总结了完备的六种不同边界条件的基片集成波导(SIW)谐振腔结构体系.基于镜像原理和亥姆霍兹方程,给出而不同边界条件下SIW谐振腔的导模场的闭式解.分析了所有边界条件下的谐振腔的场分布,与全波仿真分析、传输线模型法和空腔模型理论给出的结果一致.给出了各种边界条件下SIW谐振腔的谐振频率计算公式.基于提出的传输线附加额外的两个边界条件与谐振腔等效的原理,分析了在SIW谐振腔内,TE模、TM模与TEM模的共存机理.阐述了不同边界条件下的SIW谐振腔的演变关系.最后设计了基于不同边界条件的SIW谐振腔结构的双模带通滤波器和均衡器,该滤波器的两个模式,TE100(TEM模式)和TE102独立可调.器件的实测结果与仿真结果一致,验证了理论分析的正确性,为微波器件的小型化设计提供了思路.
文内图片：

图片说明：二小七叮泊才的?
[Abstract]:Six kinds of substrate integrated waveguide (SIW) resonator structures with different boundary conditions are summarized. Based on the mirror image principle and Helmholtz equation, the closed solutions of the guided mode field of SIW resonator under different boundary conditions are given. The field distribution of the resonator under all boundary conditions is analyzed, which is consistent with the results given by the full wave simulation analysis, the transmission line model method and the cavity model theory. The formulas for calculating the resonant frequency of SIW resonator under various boundary conditions are given. Based on the proposed principle that two additional boundary conditions are added to the transmission line and the cavity is equivalent, the coexistence mechanism of TE mode, TM mode and TEM mode in SIW resonator is analyzed. The evolution relationship of SIW resonator under different boundary conditions is described. Finally, a two-mode bandpass filter and equalizer with SIW resonator structure based on different boundary conditions are designed. The two modes of the filter, TE100 (TEM mode) and TE102, are independently adjustable. The measured results of the devices are consistent with the simulation results, which verifies the correctness of the theoretical analysis and provides an idea for the miniaturization design of microwave devices.
【作者单位】：解放军信息工程大学信息系统工程学院;
【分类号】：TN713;TN715

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