摘要作为应用系统中常选用的微带天线，虽然具有体积小、重量轻、剖面薄、等优点，但是在效率和方向性这些基本性能上，一般的单个微带天线很难做的很好。而为了解决这个基本问题，将若干微带天线构成天线阵，就成为了常用的解决办法。

本论文设计了一种工作在13GHz频率下的高增益微带天线阵。论文主要阐述了微带天线和天线阵列的基本理论以及馈电网络和阻抗匹配的实现并详细描述了单个矩形天线和二元阵的设计流程。最后，根据对直线阵列的结构，性能的分析，提出了将二元阵进一步扩展成八元阵的设想并将平面阵列在仿真软件中重新建立模型。由仿真结果可得多元阵列确实起到了提高增益的效果，但也会导致出现的副瓣增多，方向性变差。61680

毕业论文关键词  矩形微带天线；天线阵；高增益；HFSS；Ku波段；阻抗匹配

毕业设计说明书（论文）外文摘要

Title     The design of the microstrip antenna           

Abstract Micro-strip antenna is often chosen in applications. It has small size, light weight, thin profiles, etc. But as the basic properties, the efficiency and direction of one single  micro-strip antenna are very difficult to do well. In order to solve this fundamental problem, pose a number of micro-strip antenna arrays, has become a common solution.

In this paper, a micro-strip antenna array with high gain which works in 13GHz frequency is designed. This paper expatiates the micro-strip antenna and antenna array's basic theory, the realization of feed network and impedance matching. Basic steps of designing a a single rectangular antenna and binary array are also introduced. Finally, based on the analysis of the structure and performance of linear array, binary array is put forward to further extend into eight elements linear array. From the simulation results, multiple array really does improve the gain, but also will lead to increase in the number of side lobe, the directional variation.

Keywords  rectangular micro strip antenna; antenna array; high gain; HFSS;  Ku; Impedance matching

1  引言 1

1.1  微带天线的基本概念和特点 1

1.2  微带天线阵 2

1.3  微带天线国内外的发展情况和趋势 3

1.4  设计目标和内容安排 5

2  微带天线的基本原理 7

2.1  微带天线的基本原理 7

2.2  微带天线的分析方法 9

2.3  矩形微带天线 14

2.4  本章小结 19

3  天线阵原理 20

3.1  二元阵与方向图乘积定理 20

3.2  均匀直线阵 21

3.3  本章小结 24

4  微带天线阵元的设计及仿真 25

4.1  阵元的设计 25

4.2  馈电与匹配 27

4.3  微带天线阵阵元的仿真 31

4.4  本章小结 44

5  微带天线阵列的设计与仿真 45

5.1  馈电网络的设计