一种新型双频双圆极化微带天线的设计

发布时间：2018-01-07 12:05

本文关键词：一种新型双频双圆极化微带天线的设计　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】：天线是无线通信系统极其关键的部件之一，无线通信技术的发展对天线的电性能也提出了新的要求，小型化、多频带/宽频带技术成为天线的热点技术。圆极化天线由于其广泛的实用价值也颇受天线工程师青睐。本文结合实际需求，设计了一款新型小型化双频双圆极化微带天线，其特点为天线尺寸小，双频比小。第一部分介绍了小双频比双圆极化微带天线的研究背景，分类总结了近年来双频双圆极化微带天线的常见形式，，结合国内外研究现状，分析了该课题的技术难点。第二部分介绍了微带天线的基本理论与技术。微带天线的基本理论包括微带天线的分类、优缺点及分析方法，微带天线的基本技术包括圆极化技术、小型化技术和双频技术。为解决本课题的技术难点提供理论与技术支持。第三部分介绍了三种较为新型的单频小型化圆极化微带天线，分析了天线参数对性能影响。为双频双圆极化微带天线的设计做技术准备。第四部分首先介绍了双频双圆极化天线的设计指标，分析天线的设计难点，经过反复尝试，最终确定了双频双圆极化微带天线设计方案：通过层叠结构实现双频；通过不同的曲流技术实现各自的小型化。通过HFSS仿真分析该天线的工作原理以及优缺点，与实测结果进行对比，结果吻合良好。
[Abstract]:Antenna is one of the most important components of wireless communication system. The development of wireless communication technology has put forward new requirements for antenna electrical performance and miniaturization. Multi-band / wide-band technology has become a hot technology of antenna. Circular polarization antenna is also favored by antenna engineers because of its extensive practical value. A new miniaturized dual-frequency dual-circularly polarized microstrip antenna is designed, which is characterized by a small size and a small dual-frequency ratio. The first part introduces the research background of dual-circular polarization microstrip antenna with small dual-frequency ratio, classifies and summarizes the common forms of dual-frequency dual-circularly polarized microstrip antenna in recent years, combined with the current research situation at home and abroad. The technical difficulties of this subject are analyzed. The second part introduces the basic theory and technology of microstrip antenna. The basic theory of microstrip antenna includes the classification, advantages and disadvantages of microstrip antenna, and the basic technology of microstrip antenna including circular polarization technology. Miniaturization technology and dual-frequency technology. Provide theoretical and technical support for solving the technical difficulties of this subject. In the third part, three new microstrip microstrip antennas with single frequency miniaturization are introduced, and the effects of antenna parameters on the performance are analyzed. The technical preparation for the design of dual-frequency circularly polarized microstrip antennas is made. In the 4th part, the design index of dual-frequency and double-circular polarization antenna is introduced, and the design difficulty of the antenna is analyzed, which has been tried again and again. Finally, the design scheme of dual-frequency dual-circularly polarized microstrip antenna is determined: the dual-frequency antenna is realized by cascading structure; The miniaturization of the antenna is realized by different curved flow techniques. The working principle, advantages and disadvantages of the antenna are analyzed by HFSS simulation, and the results are in good agreement with the measured results.
【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】：TN822

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