移动平台上的宽波束印刷天线研究
发布时间：2019-06-25 17:47
【摘要】：天线作为飞行平台弹导无线通信系统的关键组成部分,其性能优劣对系统间通信质量高低起到至关重要作用。微带贴片天线剖面低、体积小、易于与曲面共形,且在飞机高速飞行时基本不影响机体的气动性能,特别适合应用于机载通信系统。传统的微带贴片天线带宽和波束均较窄,无法适应现代化信息通信战机高通信质量要求,因此其频带和波束的展宽研究显得尤为重要且迫在眉睫。本文通过与公司合作的工程项目,对应用于弹载、机载平台的宽带宽波束天线进行了理论研究与实验,并模拟真实机体环境,测试了搭载平台对天线电气性能的影响。论文具体内容如下:首先通过对项目指标进行分析,确定出天线指标难点和需要注意的设计细节,总结分析出经典的微带贴片天线带宽拓展方法,依次提出三种宽带微带天线的设计方案,对比仿真结果后以最佳设计方案为模型基础改进优化得到弹载天线。然后根据仿真模型进行实物加工并对加工实物进行实验测试,实验结果表明所设计的弹载天线带宽达到12.76%,所有指标均满足工程设计需要。最后是弹载天线的容差分析。机载天线与弹载天线的设计过程类似,首先对项目指标进行分析,确定了天线指标难点和需要注意的设计细节,总结分析出经典微带贴片天线波束展宽方法,并依次提出两种宽波束印刷天线的设计方案。然后对微带夹角阵列仿真模型进行实物加工并对加工实物进行实验测试。实验结果表明设计的机载天线3dB波瓣宽度达到170°以上,所有指标满足工程设计需要。最后讨论了搭载平台对天线电气性能的影响。利用FEM-IE法(有限元-积分方程混合算法)可以简洁高效地对电大尺寸模型进行仿真,仿真结果表明机载平台对天线影响较大,主波束波瓣被压缩,带内增益产生一定波动。接着通过实验进一步精确测量了平台对天线性能的影响,实验结果与仿真结果基本吻合,弹载平台对天线的电气性能影响较弱,机载平台对天线的电气性能影响较大。
[Abstract]:As a key part of the missile guided wireless communication system of flight platform, the performance of antenna plays an important role in the quality of communication between systems. The microstrip patch antenna has the advantages of low profile, small volume, easy to conformal with the curved surface, and does not affect the pneumatic performance of the aircraft when flying at high speed, so it is especially suitable for airborne communication system. The bandwidth and beam of the traditional microstrip patch antenna are narrow, which can not meet the requirements of high communication quality of modern information and communication fighters, so the research on the bandwidth and beam broadening of the traditional microstrip patch antenna is particularly important and urgent. In this paper, through the project of cooperation with the company, the broadband wide-beam antenna used in missile-borne and airborne platform is studied and tested theoretically, and the real body environment is simulated, and the influence of the platform on the electrical performance of the antenna is tested. The specific contents of this paper are as follows: firstly, through the analysis of the project index, the difficulties of antenna index and the design details that need to be paid attention to are determined, the classical microstrip patch antenna bandwidth expansion method is summarized and analyzed, and three kinds of broadband microstrip antenna design schemes are put forward in turn. After comparing the simulation results, the missile-borne antenna is improved and optimized on the basis of the best design scheme. Then, according to the simulation model, the physical processing is carried out and the experimental test is carried out. The experimental results show that the bandwidth of the designed missile antenna is 12.76%, and all the indexes meet the needs of the engineering design. Finally, the tolerance analysis of missile-borne antenna is carried out. The design process of airborne antenna is similar to that of missile-borne antenna. Firstly, the project index is analyzed, the difficulties of antenna index and the design details needing attention are determined, the classical microstrip patch antenna beam broadening method is summarized and analyzed, and two design schemes of wide-beam printed antenna are put forward in turn. Then the microstrip angle array simulation model is processed and the machining object is tested. The experimental results show that the 3dB lobe width of the designed airborne antenna is more than 170 掳, and all the indexes meet the needs of the engineering design. Finally, the influence of the platform on the electrical performance of the antenna is discussed. The FEM-IE method (finite element integral equation hybrid algorithm) can be used to simulate the electrically large size model succinctly and efficiently. The simulation results show that the airborne platform has a great influence on the antenna, the main beam lobe is compressed and the in-band gain fluctuates. Then the influence of the platform on the antenna performance is measured accurately through the experiment. The experimental results are in good agreement with the simulation results. The missile-borne platform has a weak influence on the electrical performance of the antenna, and the airborne platform has a great influence on the electrical performance of the antenna.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN822
本文编号：2505874
[Abstract]:As a key part of the missile guided wireless communication system of flight platform, the performance of antenna plays an important role in the quality of communication between systems. The microstrip patch antenna has the advantages of low profile, small volume, easy to conformal with the curved surface, and does not affect the pneumatic performance of the aircraft when flying at high speed, so it is especially suitable for airborne communication system. The bandwidth and beam of the traditional microstrip patch antenna are narrow, which can not meet the requirements of high communication quality of modern information and communication fighters, so the research on the bandwidth and beam broadening of the traditional microstrip patch antenna is particularly important and urgent. In this paper, through the project of cooperation with the company, the broadband wide-beam antenna used in missile-borne and airborne platform is studied and tested theoretically, and the real body environment is simulated, and the influence of the platform on the electrical performance of the antenna is tested. The specific contents of this paper are as follows: firstly, through the analysis of the project index, the difficulties of antenna index and the design details that need to be paid attention to are determined, the classical microstrip patch antenna bandwidth expansion method is summarized and analyzed, and three kinds of broadband microstrip antenna design schemes are put forward in turn. After comparing the simulation results, the missile-borne antenna is improved and optimized on the basis of the best design scheme. Then, according to the simulation model, the physical processing is carried out and the experimental test is carried out. The experimental results show that the bandwidth of the designed missile antenna is 12.76%, and all the indexes meet the needs of the engineering design. Finally, the tolerance analysis of missile-borne antenna is carried out. The design process of airborne antenna is similar to that of missile-borne antenna. Firstly, the project index is analyzed, the difficulties of antenna index and the design details needing attention are determined, the classical microstrip patch antenna beam broadening method is summarized and analyzed, and two design schemes of wide-beam printed antenna are put forward in turn. Then the microstrip angle array simulation model is processed and the machining object is tested. The experimental results show that the 3dB lobe width of the designed airborne antenna is more than 170 掳, and all the indexes meet the needs of the engineering design. Finally, the influence of the platform on the electrical performance of the antenna is discussed. The FEM-IE method (finite element integral equation hybrid algorithm) can be used to simulate the electrically large size model succinctly and efficiently. The simulation results show that the airborne platform has a great influence on the antenna, the main beam lobe is compressed and the in-band gain fluctuates. Then the influence of the platform on the antenna performance is measured accurately through the experiment. The experimental results are in good agreement with the simulation results. The missile-borne platform has a weak influence on the electrical performance of the antenna, and the airborne platform has a great influence on the electrical performance of the antenna.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN822
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