超宽带双极化天线与双频圆极化天线研究

发布时间：2018-03-22 07:28

本文选题：天线　切入点：双极化　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：论文结合科研项目进行选题研究,主要研究工作分为两个部分,第一部分研究工作为研制了超宽频带、双极化反射面馈源天线的实验样机,测试结果达到了技术指标要求;第二部分研究工作为设计了单馈点双频圆极化微带天线,并加工了实验样机,达到了技术指标要求。论文的主要研究内容为:一,超宽带双极化反射面馈源天线的设计针对超宽带、双极化反射面馈源天线的技术指标要求,阐述了超宽带天线的相关概念以及研究现状,指出了超宽带、双极化反射面馈源天线的设计难点,在对各种类型的超宽带天线进行比较和可行性分析之后,设计了低剖面、超宽带、双极化和高相位中心稳定度的ELEVEN天线实现本课题的技术指标。利用高频仿真软件ANSYS HFSS对所设计的天线进行仿真优化,并在仿真优化的基础上研制了实验样机,测试结果表明,天线在f-4f四个倍频程的频段内其阻抗特性与辐射特性的一致性较好,电压驻波比基本小于2.5,波束宽度、增益等指标满足双极化反射面馈源天线的基本要求。二,单馈点双频圆极化微带天线的设计根据双频圆极化微带天线的技术指标要求,阐述了双频、双极化天线的相关概念以及实现方法,指出了双频圆极化微带天线的设计难点。并且,针对设计难点,设计了单馈点、双频、圆极化微带天线。利用高频仿真软件ANSYS HFSS对所设计的天线进行了仿真分析和优化,并且在此基础上研制了天线样机,测试结果表明,所设计天线在所需的工作频段内,电压驻波比小于2,增益大于7dBic,实现了双频圆极化辐射特性。测试结果说明本课题研制的天线具有很高的工程应用价值。
[Abstract]:The research work is divided into two parts. In the first part, the experimental prototype of ultra-wideband, dual-polarization reflector feed antenna is developed, and the test results meet the technical requirements. The second part of the research work is to design a single-point double-frequency circularly polarized microstrip antenna and process the experimental prototype to meet the technical requirements. The main contents of this paper are as follows: 1. The design of ultra-wideband dual-polarization reflector feed antenna is aimed at the technical requirements of ultra-wideband and dual-polarization reflector antenna. The related concepts and research status of ultra-wideband antenna are expounded, and the UWB antenna is pointed out. After comparing and analyzing the feasibility of various types of ultra-wideband antennas, the low profile and ultra-wideband (UWB) antenna are designed. The ELEVEN antenna with dual polarization and high phase center stability is used to realize the technical target of this project. The antenna is simulated and optimized by using the high-frequency simulation software ANSYS HFSS, and an experimental prototype is developed on the basis of the simulation optimization. The test results show that, The impedance and radiation characteristics of the antenna are in good agreement in the frequency band of f-4f, the VSWR is basically less than 2.5, the beam width and gain meet the basic requirements of the dual-polarization reflector feed antenna. Design of double frequency circularly polarized microstrip antenna with single feed point according to the technical requirements of double frequency circular polarized microstrip antenna, the related concepts and implementation methods of double frequency and double polarization antenna are expounded. The design difficulties of dual-frequency circular polarized microstrip antenna are pointed out. Aiming at the design difficulties, single feed point, double frequency microstrip antenna and circular polarization microstrip antenna are designed. The simulation analysis and optimization of the designed antenna are carried out by using the high-frequency simulation software ANSYS HFSS. On this basis, the antenna prototype is developed. The test results show that the designed antenna is in the desired frequency band. The VSWR is less than 2 and the gain is more than 7dBic. the dual-frequency circular polarization radiation is realized. The test results show that the antenna developed in this paper has high engineering application value.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN821.1

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