基于基片集成波导的几种微波无源器件设计与分析

发布时间：2018-05-19 18:14

  本文选题：基片集成波导 + 消失模滤波器　； 参考：《哈尔滨工业大学》2016年硕士论文

【摘要】：基片集成波导是一种新型的波导型传输线,具有与传统介质填充波导相似的导波结构,理论研究证明,二者也有相似的传输特性。因此,基片集成波导具有传统矩形波导插入损耗低、功率容量大、辐射小等优点,同时兼具微带线低剖面、尺寸小、易于加工、易于与其他平面结构集成等优点。本文设计了4种基于基片集成波导结构的微波无源器件:(1)设计了一种基于立体折叠半模SIW的消失模滤波器,工作频带为2.04-3.28GHz,相对带宽达到46.61%,带外抑制优于25d B;(2)设计了一种基于SIW的全模功率分配器,在9.4-11GHz的频率范围内能实现四个输出端口的功率分配,在此基础上,设计了半模SIW两路功率分配器,并将其应用到原全模结构的四路功分器当中,所实现的半模基片集成波导四路功率分配器在7.79-9.86GHz的频率范围内能实现四个输出端口的功率分配;(3)设计了一种基于基片集成波导的移相器,讨论了波导中加载圆柱形电感销钉的等效电路,设计了一种加载4对电感销钉的微波移相器,在9.32-9.68GHz(相对带宽为3.79%)的频率范围内能够实现90°±5°的相位偏移;(4)设计了一种基于基片集成波导的多孔定向耦合器,在5.52-6.58GHz的频率范围内能够实现耦合端口的耦合,在此基础上设计了一种基于半模基片集成波导的定向耦合器,在5.03-8.51GHz的频率范围内能够实现-6d B的耦合端口耦合,与全模结构相比较,横向尺寸缩减51.9%,纵向尺寸缩减了48.7%。上述所有微波无源器件模型,均在CST Microwave Studio?电磁仿真软件中建立了相应的模型,并进行了优化工作和实物的加工,对实物使用安捷伦N5227A型矢量网络分析仪进行了测试,测试结果表明,实验结果与仿真结果吻合较好,证明了设计思路的正确性。所设计的无源器件均已实现了低剖面及轻量化,可以用于相应频段的通信与电子系统中。
[Abstract]:The substrate integrated waveguide is a new type of waveguide transmission line, which has a guided wave structure similar to that of the traditional dielectric filled waveguide. The theoretical study shows that the two waveguides also have similar transmission characteristics. Therefore, the substrate integrated waveguide has the advantages of low insertion loss, large power capacity, low radiation and so on. At the same time, it also has the advantages of low profile of microstrip line, small size, easy processing and easy integration with other planar structures. In this paper, four microwave passive devices based on substrate integrated waveguide structure: 1) an evanescent mode filter based on stereoscopic folded half-mode SIW is designed. The operating frequency band is 2.04-3.28GHz, the relative bandwidth is 46.61, and the out-of-band suppression is better than 25dB / 2) an all-mode power divider based on SIW is designed. The power distribution of four output ports can be realized in the frequency range of 9.4-11GHz. The half-mode SIW two-way power divider is designed and applied to the four-way power divider with the original full-mode structure. In this paper, a phase shifter based on substrate integrated waveguide is designed, which can realize the power distribution of four output ports in the frequency range of 7.79-9.86GHz. The equivalent circuit of loaded cylindrical inductor pin in waveguide is discussed. A microwave phase shifter with 4 pairs of inductor pins is designed. A kind of porous directional coupler based on substrate integrated waveguide is designed in the frequency range of 9.32-9.68 GHz (relative bandwidth 3.79), which can realize 90 掳卤5 掳phase offset. The coupling port can be realized in the frequency range of 5.52-6.58GHz. On this basis, a directional coupler based on half-mode substrate integrated waveguide is designed. The coupling port coupling of -6dB can be realized in the frequency range of 5.03-8.51GHz. Compared with the full-mode structure, the transverse dimension is reduced by 51.9 and the longitudinal dimension by 48.7. All of the above microwave passive device models are in CST Microwave Studio? The corresponding model is established in the electromagnetic simulation software, and the optimization work and physical processing are carried out, and the actual use of Agilent N5227A vector network analyzer is tested. The test results show that the experimental results are in good agreement with the simulation results. The correctness of the design idea is proved. The passive devices have been designed with low profile and light weight, which can be used in the communication and electronic systems in the corresponding frequency band.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN62;TN814
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本文编号：1911134