小型化基片集成波导背腔缝隙天线研究
发布时间：2018-12-16 18:18
【摘要】：作为现代无线通信系统的重要组成部分,天线与电子科学与技术的发展趋势一样,都共同朝着小型化、高性能和高集成度的方向迅猛发展。基片集成波导背腔缝隙天线是一种新兴的天线形式,它除了具有基片集成波导体积小、重量轻的结构特点,损耗低、Q值高的电路特点,以及成本低、易与现有平面微波电路集成的制造特点以外,它还同时具有高性能、功率容量高、热稳定性高和结构稳固等自传统金属波导缝隙天线沿袭而来的固有特点。因此小型化基片集成波导背腔缝隙天线的基础应用研究,对于实现高性能、高集成度的现代微波毫米波无源器件和有源电路,不仅具有重要的理论价值还具有工程实际意义。本论文以矩形、六边形基片集成波导和矩形半模基片集成波导背腔缝隙天线作为研究对象,研究其小型化技术,通过基片集成波导谐振腔体内的高阶TE或高阶准TM谐振模式与多缝隙结构提高增益的技术,以及通过矩形半模基片集成波导谐振腔体与其腔体内的110HTE和210HTE混合谐振模式扩展天线阻抗匹配带宽的技术。首先介绍了基片集成波导背腔缝隙天线设计的相关基础理论与技术。从天线主要特征参数的简要介绍出发,以数学推导的形式分析了传统的谐振式金属波导缝隙天线的基本原理与设计方法,并对于基片集成波导技术的基本理论及其多种形式腔体的谐振特性进行了的简要回顾,为小型化基片集成波导背腔缝隙天线的设计奠定了理论与技术基础。其次设计并实现了两款应用高阶TE谐振模式的小型化矩形基片集成波导背腔缝隙天线。通过这两款天线初步分析了基片集成波导背腔缝隙天线的辐射原理,通过共地共面波导结构实现了天线的小型化,通过矩形基片集成波导内高阶TE谐振模式与多缝隙结构提高了天线的增益。随后设计并实现了三款应用准TM谐振模式的小型化六边形基片集成波导背腔缝隙天线,通过弯折变形缝隙结构实现了天线的小型化,起微扰作用的金属化通孔阵列有助于激励高阶谐振模式并抑制干扰谐振模式,通过六边形基片集成波导内高阶准TM谐振模式与多缝隙结构提高了天线的增益。最后实现了两款应用110HTE和210HTE混合谐振模式的小型化矩形半模基片集成波导背腔缝隙天线,通过半模基片集成波导谐振腔结构实现了天线的小型化,通过Q值较低的矩形半模基片集成波导腔体与其腔体内的110HTE和210HTE混合谐振模式扩展了天线的阻抗匹配带宽。
[Abstract]:As an important part of modern wireless communication system, antenna and electronic science and technology are developing rapidly in the direction of miniaturization, high performance and high integration. Substrate integrated waveguide back-cavity slot antenna is a new type of antenna. It has the characteristics of small size, light weight, low loss, high Q value and low cost. In addition to the manufacturing features which are easy to integrate with the existing planar microwave circuits, it also has the inherent characteristics of high performance, high power capacity, high thermal stability and structural stability, which are inherited from the traditional metal waveguide slot antennas. Therefore, the basic application research of miniaturized substrate integrated waveguide back-cavity slot antenna is not only of important theoretical value but also of engineering practical significance for the realization of high performance and high integration of modern microwave millimeter-wave passive devices and active circuits. In this thesis, rectangular, hexagonal substrate integrated waveguide and rectangular half-mode integrated waveguide back cavity slot antenna are taken as the research objects, and its miniaturization technology is studied. The gain enhancement is achieved by integrating the higher-order TE or high-order quasi-TM resonant modes in the waveguide resonator with the multi-slot structure. The technique of expanding the impedance matching bandwidth between the waveguide resonator and the 110HTE and 210HTE hybrid resonant modes in the resonator by rectangular half-mode substrate is also presented. Firstly, the basic theory and technology of the design of the slot antenna in the substrate integrated waveguide are introduced. Based on the brief introduction of the main characteristic parameters of the antenna, the basic principle and design method of the traditional resonant metal waveguide slot antenna are analyzed in the form of mathematical derivation. The basic theory of substrate integrated waveguide technology and the resonant characteristics of various types of cavity are briefly reviewed, which lays a theoretical and technical foundation for the design of a miniaturized substrate integrated waveguide back cavity slot antenna. Secondly, two small rectangular substrate integrated waveguide slot antennas with high order TE resonant mode are designed and implemented. Through these two antennas, the radiation principle of the substrate integrated waveguide back cavity slot antenna is analyzed preliminarily, and the antenna is miniaturized by coplanar waveguide structure. The gain of the antenna is improved by the high order TE resonant mode and multi-slot structure in the rectangular substrate integrated waveguide. Then three miniaturized hexagonal substrates integrated waveguide slot antennas with quasi-TM resonant mode are designed and implemented. The antenna is miniaturized by bending and deforming slot structure. The metallized through hole array which acts as a perturbation helps to excite the higher-order resonant mode and suppress the interference resonant mode. The gain of the antenna is improved by the high-order quasi-TM resonant mode and the multi-slot structure in the hexagonal substrate integrated waveguide. Finally, two miniaturized rectangular half-mode integrated waveguide back-cavity slot antennas using the hybrid resonant mode of 110HTE and 210HTE are realized, and the antenna is miniaturized through the half-mode integrated waveguide resonator structure. The impedance matching bandwidth of the antenna is extended by the rectangular half-mode substrate integrated waveguide cavity with the mixed resonant modes of 110HTE and 210HTE in the cavity.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN823.24
[Abstract]:As an important part of modern wireless communication system, antenna and electronic science and technology are developing rapidly in the direction of miniaturization, high performance and high integration. Substrate integrated waveguide back-cavity slot antenna is a new type of antenna. It has the characteristics of small size, light weight, low loss, high Q value and low cost. In addition to the manufacturing features which are easy to integrate with the existing planar microwave circuits, it also has the inherent characteristics of high performance, high power capacity, high thermal stability and structural stability, which are inherited from the traditional metal waveguide slot antennas. Therefore, the basic application research of miniaturized substrate integrated waveguide back-cavity slot antenna is not only of important theoretical value but also of engineering practical significance for the realization of high performance and high integration of modern microwave millimeter-wave passive devices and active circuits. In this thesis, rectangular, hexagonal substrate integrated waveguide and rectangular half-mode integrated waveguide back cavity slot antenna are taken as the research objects, and its miniaturization technology is studied. The gain enhancement is achieved by integrating the higher-order TE or high-order quasi-TM resonant modes in the waveguide resonator with the multi-slot structure. The technique of expanding the impedance matching bandwidth between the waveguide resonator and the 110HTE and 210HTE hybrid resonant modes in the resonator by rectangular half-mode substrate is also presented. Firstly, the basic theory and technology of the design of the slot antenna in the substrate integrated waveguide are introduced. Based on the brief introduction of the main characteristic parameters of the antenna, the basic principle and design method of the traditional resonant metal waveguide slot antenna are analyzed in the form of mathematical derivation. The basic theory of substrate integrated waveguide technology and the resonant characteristics of various types of cavity are briefly reviewed, which lays a theoretical and technical foundation for the design of a miniaturized substrate integrated waveguide back cavity slot antenna. Secondly, two small rectangular substrate integrated waveguide slot antennas with high order TE resonant mode are designed and implemented. Through these two antennas, the radiation principle of the substrate integrated waveguide back cavity slot antenna is analyzed preliminarily, and the antenna is miniaturized by coplanar waveguide structure. The gain of the antenna is improved by the high order TE resonant mode and multi-slot structure in the rectangular substrate integrated waveguide. Then three miniaturized hexagonal substrates integrated waveguide slot antennas with quasi-TM resonant mode are designed and implemented. The antenna is miniaturized by bending and deforming slot structure. The metallized through hole array which acts as a perturbation helps to excite the higher-order resonant mode and suppress the interference resonant mode. The gain of the antenna is improved by the high-order quasi-TM resonant mode and the multi-slot structure in the hexagonal substrate integrated waveguide. Finally, two miniaturized rectangular half-mode integrated waveguide back-cavity slot antennas using the hybrid resonant mode of 110HTE and 210HTE are realized, and the antenna is miniaturized through the half-mode integrated waveguide resonator structure. The impedance matching bandwidth of the antenna is extended by the rectangular half-mode substrate integrated waveguide cavity with the mixed resonant modes of 110HTE and 210HTE in the cavity.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN823.24
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