L波段单脉冲天线阵列设计与研究

发布时间：2017-12-30 23:02

本文关键词：L波段单脉冲天线阵列设计与研究　出处：《合肥工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着单脉冲天线各种新技术的涌现,单脉冲天线的形式越来越多样化。因此对于单脉冲天线及其馈电网络的研究显得尤为重要。本文根据微带缝隙耦合天线及天线阵列理论,设计了两款L波段的单脉冲天线阵列。本文首先采用微带缝隙耦合天线作为天线单元,组成了4x4的天线阵列,并且根据Gysel功分器拓扑结构改进的新型环形电桥作为和差网络。接着设计了一款一维L波段的单脉冲天线阵列,并且为了克服互耦带来的负面影响,减小各天线单元间的互耦作用,本文对此问题进行了着重研究与分析。在上述工作的基础上,为了克服一维单脉冲天线的不足,又对馈电网络进行了改进。利用三分支微带耦合器和90°移相器构成了一个十字形微带和差器,以此来做为单脉冲天线阵列的和差网络。并设计了一款二维L波段的单脉冲天线阵列,该天线阵列能够同时获取方位信息和俯仰信息。在HFSS软件仿真的结果表明,这两款单脉冲天线的方向图性能良好,和方向的最大增益均在16dB左右,差方向的最大增益都在13dB以上,零深也都优于-30dB,各端口的驻波比在工作频带内小于2,天线的各项指标均满足了设计要求。本文设计的这两款单脉冲天线的馈电结构与天线贴片置于同一平面中,所以该天线克服了传统单脉冲天线的体积庞大,支撑结构复杂等缺点,更容易进行系统和天线的集成,适应了现代天线发展的需要。
[Abstract]:With the single pulse antenna all the emergence of new technology, single pulse antenna form more and more diverse. It is important to study the single pulse antenna and feed network. Based on the coupled microstrip slot antenna and antenna array theory, the two L band monopulse antenna array is designed. This paper adopts microstrip slot antenna coupling as the antenna unit, the antenna array of 4x4 components, and according to the new ring bridge topology Gysel power divider is improved as the sum and difference network. Then the design of single pulse antenna array is a one-dimensional L band, and in order to overcome the negative effects brought by mutual coupling, reducing the effect of mutual coupling between the antenna unit, for the study and analysis of this issue. Based on the above work, in order to overcome the shortcomings of mono pulse antenna, the feed network is improved by three. Microstrip coupler and 90 degrees phase shifter to form a cross shaped microstrip and difference, as a single pulse antenna array and difference network. And the design of the monopulse antenna array is a two-dimensional L band, the antenna array can also obtain azimuth information and elevation information. That in the simulation software of HFSS results the two single pulse antenna with good performance, the maximum gain and direction were about 16dB, the maximum gain difference direction is above 13dB, zero deep are better than those of -30dB, Bobbi in the port in the working frequency band is less than 2, the index of the antenna can meet the design requirements in this paper. The design of the two monopulse antenna feed structure and the patch of the antenna on the same plane, so the antenna overcomes the traditional monopulse antenna size, complexity of the supporting structure, more easily integrated system and antenna, It adapts to the needs of modern antenna development.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN820.15

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