文档介绍：毕业论文
空气贴片微带天线的设计
摘要
微带天线的发展正方兴未艾,应用前景非常广泛。由于应用的需要,微带天线在许多方面还将得到进一步的发展,如天线介质材料的更新,天线的多极化技术,分形技术,,微带天线将会得到更为广泛的用。
本文着重点是,设计了一款可用于UHF频段(915MHz)圆极化微带天线。采用双层介质微带贴片展宽天线频带。设计适用于UHF频段的微带圆极化天线。要求体积小,增益高。具体指标如下:工作频率:902-928MHz;增益:大于5dBi;驻波比:;极化方式:圆极化,并利用Ansoft软件进行仿真设计。
关键词:微带天线;Ansoft软件;圆极化
The Air Microstrip Patch Antenna Design Abstract
Abstract
The development of the microstrip antenna is in the ascendant and also it has very broad application prospects. Since the request of the application, the microtstrip will be further developed in many ways, for example update the material of the dielectric antenna, Multi-polarization technology, fractal technology, photonic band gap (PBG) as well puter aided design (CAD) technology puter aided manufacturing (CAM) technology, etc. With the development of technology and the in-depth study and discussion of the microstrip antenna, it will be more widely used.
In this article, emphasis is to design a circularly polarized microstrip antenna that can be used in UHF (915MHz) band. Double-layer dielectric microstrip can be used to broaden antenna bandwidth. Microstrip circular polarized antenna is designed for use in the UNF band. It requests small in size, high-gain. Specific indicators are as follows, Operating frequency: 902-928MHz; Gain: greater than 5dBi; VSWR: less than ; Polarization mode: circular polarization also it has to be simulated by Ansoft software.
Key Words:Microstrip Antenna;Ansoft Software;Circularly Polarization
目录
1 绪论 1
课题研究背景及意义 1
微带天线技术概述 1
2
2 微带天线 3
3
微带天线的发展近况 3
天线设计的主要工作 4
5
优点 5
缺点 5
天线的参数 5
方向性 5
方向图 6
天线效率 7
增益系数 7
天线的极化 7
频带的宽度 8
天线的输入阻抗和驻波比 8
参数 9
9
9
微带天线的基本类型 9
矩形微带天线 10
圆极化标签天线 10
微带贴片材料 11
11
宽频带技术 11
多频段工作