HFSS的Ka波段单脉冲天线阵列设计研究

摘要微波毫米波天线是近来研究的重要课题，雷达天线的应用也越来越广泛，不仅在军队建设中有举足轻重的地位，在我们日常生活也意义重大。本文主要是对ka波段单脉冲天线阵列进行设计和研究，分析该天线的性能。69358

本文中主要对以下方面进行研究：

第一，在微带天线的基础上设计缝隙耦合馈电的微带天线贴片单元，通过加载纵缝有效的抑制交叉极化；

第二，设计一个十三端口功分器，按照二维泰勒分布规律来设计每段的长度，合理分布激励和相位，使功分器性能指标达到目标设计要求；

第三，设计和差馈电网络，采用缝隙耦合式波导和差器模型，通过尺寸和结构调整消除直通端口和耦合端口之间的相位差；

第四，设计单脉冲天线阵列，完成26×6单脉冲天线阵列。

本文在HFSS仿真软件的基础上对天线进行优化仿真，使天线的增益、副瓣、驻波比达到目标。

毕业论文关键词缝隙耦合贴片单元功分器缝隙耦合和差器单脉冲天线

毕业设计说明书外文摘要

Title Research on the design of Ka-band monopulse antenna array

Abstract

Microwave and millimeter wave antenna is an important study subject recently. The radar antennas are widely used in many applications.And they have not only a pivotal position in the army construction but also great significance in our daily life. This thesis researches the design of Ka-band monopulse antenna array and explores the performance of the antenna.

Here are the main aspects of the study in this thesis:

Firstly, on the basis of microstrip antenna, a slot coupled feed microstrip patch antenna unit is designed, which has a suppression of cross polarization effectively by using the longitudinal seam;

Secondly, a thirteen port splitters is designed. The length of each branch line by adapting the two-dimensional Taylor distribution. And the exciting distribution will make the power splitter achieve the design requirements;

Thirdly, a sum-difference feeding network is designed.By using the slot-coupled wave guide model, the sum-difference feeding network is designed and optimized. The phase difference between the through port and the coupling port is eliminated by adjusting the structure size of the model;

Finally, a 26 ×6 monopulse antenna array is designed.

In this thesis, the antenna array with low sidelobe and high gain is designed and optimized by using the commercial software HFSS.

Keywords : Aperture-coupled patch element Splitters Slot Coupler Sum-difference network Monopulse

1 绪论 1

1.1研究背景和意义 1

1.2 ka波段单脉冲天线的概述 1

1.3 本文研究内容 2

2 设计原理 3

2.1 阵列天线原理 3

2.2 单脉冲技术 5

2.3 微带天线原理 8

2.4 和差网络原理 HFSS的Ka波段单脉冲天线阵列设计研究:http://www.youerw.com/tongxin/lunwen_78175.html