X波段波导缝隙阵列天线设计

发布时间：2018-01-06 17:04

本文关键词：X波段波导缝隙阵列天线设计　出处：《中国舰船研究院》2014年硕士论文　论文类型：学位论文

【摘要】：波导缝隙阵列天线有结构紧凑、重量轻、口径利用率高、口径场分布容易控制和容易实现低副瓣甚至超低副瓣等优点，在雷达和通信领域都得到了广泛的应用。本文研究了波导缝隙阵列天线的基本理论，分析并总结了波导缝隙阵列天线的设计方法，仿真设计了波导宽边缝隙阵列天线和窄边缝隙阵列天线。本文主要内容和创新点如下：首先，概述了波导缝隙阵列天线的基本理论，重点分析了波导缝隙天线的辐射原理和波导壁上不同类型缝隙对应的等效电路，研究了驻波阵和行波阵的适用范围。根据阵列天线的基本理论，分析比较了契比雪夫和泰勒综合法，，得出泰勒综合法更适合于波导缝隙阵列设计的结论。其次，针对波导宽边缝隙阵列天线，提出一种将等效电路法和有源导纳法结合，从而将Elliott三个设计方程拆分组合为两个方程组，计算缝隙偏距和长度的方法。在高频电磁仿真软件HFSS中，仿真设计了波导宽边纵向缝隙驻波阵列天线和行波阵列天线，仿真结果达到设计指标。最后，详细讨论了功率传输法在波导窄边缝隙行波阵列天线设计中的应用。利用HFSS软件仿真设计了波导窄边缝隙行波阵。研究了抑制波导窄边倾斜缝隙阵列交叉极化分量的方法，提出了一种在波导窄边开扭转缝隙从而抑制交叉极化的方法，并仿真验证了这种缝隙抑制交叉极化的特性。
[Abstract]:The waveguide slot array antenna has the advantages of compact structure , light weight , high aperture utilization rate , easy control of aperture field distribution and easy realization of low side lobe and even ultra - low side lobe . Firstly , the basic theory of waveguide slot array antenna is summarized , the radiation principle of waveguide slot antenna and the equivalent circuit corresponding to different types of slots on the waveguide wall are analyzed , and the application range of the standing wave array and the travelling wave array is studied . According to the basic theory of array antenna , this paper compares the comprehensive method of Chibi and Taylor , and concludes that the Taylor synthesis method is more suitable for the design of waveguide slot array . Secondly , the equivalent circuit method and active admittance method are proposed to combine the equivalent circuit method and the active admittance method for the slotted array antenna of the waveguide . The method of splitting the three design equations into two equations is presented , and the gap offset and length are calculated . In the HFSS of the high frequency electromagnetic simulation software , the longitudinal slot standing wave array antenna and the travelling wave array antenna are designed and designed , and the simulation results reach the design index . In the end , the application of power transmission method in the design of narrow - edge slot travelling wave array antenna in waveguide is discussed in detail . The method of suppressing cross polarization component of narrow - side slot array of waveguide is designed by using HFSS software simulation .

【学位授予单位】：中国舰船研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN823.24

【参考文献】