无线通信系统中微波滤波器小型化研究
发布时间：2018-12-06 17:00
【摘要】：随着科技的进步,微波器件正朝着高性能、多用途和小型化的方向发展。滤波器作为无线系统中的主要器件,发挥着重要作用,它们的性能好坏与尺寸大小将对整个系统产生重要的影响,滤波器小型化因此成为当前微波无源器件领域的研究热点。论文工作基于上述背景,以基片集成波导(SIW)技术为研究基础,以滤波器结构的小型化为研究方向,依次研究了双模谐振、微扰结构以及微带开口谐振环对基片集成波导/半模基片集成波导腔体谐振特性的影响,设计出一系列基片集成波导腔体滤波器;在此基础之上,进一步研究了相关滤波结构在滤波天线方面的应用。主要研究内容包括以下几点:1、基片集成波导腔体滤波器设计。针对不同形状的基片集成波导腔体:矩形腔、圆形腔、三角形腔和混合形腔,分别进行了研究。在此基础之上,设计了这基于这种四种形状的基片集成波导腔体滤波器。2、基于半模基片集成波导(HMSIW)技术,设计了半模基片集成波导滤波器。在性能不变的前提下,所设计的滤波器与基片集成波导滤波器相比,尺寸减少一半。3、基于双模谐振谐振腔技术,设计了基片集成波导双模滤波器。在双模谐振条件下,以单个腔体实现了以往多个主模谐振腔体的滤波效果。在此基础之上,还通过添加微扰柱进行额外的扰动,提高了滤波器性能。4、利用缝隙结构的微扰作用,通过在滤波器表面分别蚀刻交叉缝隙、T形缝隙、H形缝隙,改变了表面电流流向,降低了谐振频率,减小了滤波器尺寸。5、基于复合开口谐振环(CSRR)技术,设计了基片集成波导CSRR滤波器,在低于SIW的截止频率处产生了新的通带,降低了谐振频率,减小了滤波器尺寸。6、将滤波器与天线进行集成设计,设计了多款基于基片集成波导结构的滤波天线。所设计的天线同时具有滤波与辐射的特性,除具有较好的增益与方向性之外,还具有较高的带外抑制能力。
[Abstract]:With the development of science and technology, microwave devices are developing towards high performance, multi-purpose and miniaturization. As the main devices in wireless systems, filters play an important role. Their performance and size will have an important impact on the whole system. Therefore, the miniaturization of filters has become a hot topic in the field of microwave passive devices. Based on the above background, based on the substrate integrated waveguide (SIW) technology and the miniaturization of the filter structure, the two-mode resonance is studied in turn. A series of substrates integrated waveguide cavity filters are designed because of the influence of the perturbation structure and the microstrip open resonant ring on the resonant characteristics of the substrate integrated waveguide / half mode integrated waveguide cavity. On this basis, the application of correlation filter structure in filtering antenna is further studied. The main contents are as follows: 1. Substrate integrated waveguide cavity filter design. The integrated waveguide cavities with different shapes, including rectangular cavity, circular cavity, triangular cavity and mixed cavity, are studied respectively. On the basis of this, we design the integrated waveguide cavity filter based on the four shapes. 2. Based on the half-mode substrate integrated waveguide (HMSIW) technology, the half-mode substrate integrated waveguide filter is designed. On the premise of constant performance, the size of the designed filter is reduced by half compared with the substrate integrated waveguide filter. 3. Based on the dual-mode resonator technology, the substrates integrated waveguide dual-mode filter is designed. Under the condition of double mode resonance, the filtering effect of previous main mode resonators is realized with a single cavity. On this basis, the performance of the filter is improved by adding the perturbation column to the filter. 4. By etching the cross slot, T-shaped slot, H-shaped slot on the surface of the filter respectively, the perturbation effect of the gap structure is used. The surface current flow is changed, the resonant frequency is reduced, and the filter size is reduced. 5. Based on the compound open resonant ring (CSRR) technology, a substrate integrated waveguide CSRR filter is designed, which produces a new passband at the cut-off frequency below the SIW. The resonant frequency is reduced and the size of the filter is reduced. 6. The filter and antenna are integrated to design several filter antennas based on substrate integrated waveguide structure. The designed antenna has the characteristics of both filtering and radiation. Besides the good gain and directivity, the antenna also has a high out-of-band suppression capability.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN713;TN92
，
本文编号：2366356
[Abstract]:With the development of science and technology, microwave devices are developing towards high performance, multi-purpose and miniaturization. As the main devices in wireless systems, filters play an important role. Their performance and size will have an important impact on the whole system. Therefore, the miniaturization of filters has become a hot topic in the field of microwave passive devices. Based on the above background, based on the substrate integrated waveguide (SIW) technology and the miniaturization of the filter structure, the two-mode resonance is studied in turn. A series of substrates integrated waveguide cavity filters are designed because of the influence of the perturbation structure and the microstrip open resonant ring on the resonant characteristics of the substrate integrated waveguide / half mode integrated waveguide cavity. On this basis, the application of correlation filter structure in filtering antenna is further studied. The main contents are as follows: 1. Substrate integrated waveguide cavity filter design. The integrated waveguide cavities with different shapes, including rectangular cavity, circular cavity, triangular cavity and mixed cavity, are studied respectively. On the basis of this, we design the integrated waveguide cavity filter based on the four shapes. 2. Based on the half-mode substrate integrated waveguide (HMSIW) technology, the half-mode substrate integrated waveguide filter is designed. On the premise of constant performance, the size of the designed filter is reduced by half compared with the substrate integrated waveguide filter. 3. Based on the dual-mode resonator technology, the substrates integrated waveguide dual-mode filter is designed. Under the condition of double mode resonance, the filtering effect of previous main mode resonators is realized with a single cavity. On this basis, the performance of the filter is improved by adding the perturbation column to the filter. 4. By etching the cross slot, T-shaped slot, H-shaped slot on the surface of the filter respectively, the perturbation effect of the gap structure is used. The surface current flow is changed, the resonant frequency is reduced, and the filter size is reduced. 5. Based on the compound open resonant ring (CSRR) technology, a substrate integrated waveguide CSRR filter is designed, which produces a new passband at the cut-off frequency below the SIW. The resonant frequency is reduced and the size of the filter is reduced. 6. The filter and antenna are integrated to design several filter antennas based on substrate integrated waveguide structure. The designed antenna has the characteristics of both filtering and radiation. Besides the good gain and directivity, the antenna also has a high out-of-band suppression capability.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN713;TN92
，
本文编号：2366356
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