摘要微带天线具有体积小,重量轻,低剖面,制造成本低,易于批量生产,易于和微带线路集成等特点,能得到单方向的宽瓣方向图,易于实现双频段、双极化等多功能工作。这些优点使得微带天线在大约100MHz~100GHz宽广频域上,广泛应用于包括卫星通信、雷达、遥感、制导武器以及便携式无线电设备。
论文首先回顾了微带天线的发展史,介绍了它的结构、优缺点及应用,然后给出了微带天线的几种分析方法,包括传输线法,空腔模型法,积分方程法等,并介绍了微带天线圆极化的原理和实现方法以及微带天线的馈电方式。然后在Ansoft HFSS中创建了一个缝隙耦合微带天线和双馈圆极化微带天线。10589
关键词 微带天线 圆极化 缝隙耦合 双馈
毕业设计说明书(论文)外文摘要
Title Research of doubly-fed circular polarization sending and receiving antenna unit
Abstract
Microstrip antenna is small in size with little weight and low cost, this made it easy to integrate with microstrip antenna and can easy to have large production.
Microstrip antenna can work in a multi-function condition from double-frequency to double polarization. It can also generate one-way wide-lobe pattern . All these feathers make the microstrip antenna have a wide use for satellite communications, radar, remote sensing, guided weapons, and portable radio equipment, with the working frequency from 100MHz~100GHz.
This paper firstly review the history of microstrip antenna, introducing its structure, strength &weakness and application area. And then, several analysis methods was introduced including transmission line method, the cavity model method, the integral equation method. After that this paper also mentioned the theory and realization of circularly polarized microstrip antenna and microstrip antenna feed. At last, by using Ansoft HFSS build a gap-coupled microstrip antenna and a dual-fed circularly polarized microstrip antenna.
Key words microstrip antenna circular polarization aperture coupling double-fed
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