波导缝隙阵仿真设计设计

学校代码：_ 11059_

学号：0905072010

Hefei University

毕业论文（设计）BACHELO R DI SSERTATIO N

论文题目：__________波导缝隙阵仿真设计____ ____

学位类别：工学学士

学科专业：________________ 通信工程

作者姓名：_______________ 马跃_____________ _________ 导师姓名：郑娟

完成时间：_________ 2013-5-27_________ _

波导缝隙阵仿真设计

中文摘要

缝隙天线是由金属面上的缝隙构成的天线。波导裂缝阵列天线由于其体积小、重量轻、口径效率高、功率容量大和容易实现低副瓣及超低副瓣等优点，在机载火控雷达、导弹导引头等方面有着极为广泛的应用。波导上的缝隙随着其切割位置的不同构成了不同形式的缝隙。经常使用的缝隙有开在波导窄边的倾斜缝隙，开在波导宽边的纵向缝隙、横向缝隙以及开在波导宽边中心线上到倾斜缝隙，它们既可以是谐振式的，也可以是非谐振式的。由于这些缝隙均切割表面电流，因而将向外部空间辐射能量，对这些缝隙的个数、位置、尺寸、排列进行精心选择，就能产生各种实用的天线。

本次设计要求为天线中心频率10GHz。本设计通过理论计算和软件仿真实现相结合最终得出结果，最后结果从方向图可以看出该缝隙的增益达到

19.05dB，且呈现笔形波束。而第一副瓣约为-9.5dB，与主瓣相差28.55dB左右，满足波导缝隙阵天线使用场合的低副瓣要求。

关键词：波导缝隙阵；阻抗；导纳；散射系数；HFSS；泰勒线源

Design of Waveguide Slot Array Simulation

ABSTRACT

The slot antenna is the antenna consists of metal surface of the gap. Waveguide slot array antenna because of its small size, light weight, high aperture efficiency,large power capacity and easy to realize low sidelobe and ultra low sidelobe and other advantages, has been widely used in airborne fire control radar, missile seeker. Slot waveguide with the cutting position of different form the gap. Gap are often used in the inclined slot waveguide edge, opened in the longitudinal slot waveguide, the transverse slot and open to the inclined slot in the waveguide center line, they can be resonant, also can be

the non resonant. Because of these gaps are cutting surface current, thus to outer space radiation energy, the slot number, location, size, arrangement of carefully selected, can produce a variety of antenna .

The design requirements for the antenna center frequency 10GHz. This design through theoretical calculation and software simulation to achieve the combination of the final results, the final results from the direction of the gap can be seen that gain reaches 19.05dB, and presented a pencil beam. And the first sidelobe is about -9.5dB, and the main valve is about28.55dB, meet the waveguide slot array antenna used low sidelobe requirements.

KEY WORD: waveguide slot array; impedance; admittance; scattering coefficient; HFSS; Taylor line source

目录

第一章前言 0

1.1 波导缝隙阵天线研究背景及意义 0

1.2 波导缝隙阵研究的现状 (2)

第二章波导缝隙阵天线概述 (4)

2.1 天线简介 (4)

2.2 波导缝隙阵概述 (5)

2.3 波导裂缝阵天线的组成 (6)

2.3.1辐射阵面 (6)

2.3.2耦合波导 (7)

2.3.3馈电波导 (8)

2.4 缝隙类型 (8)

2.4.1 缝隙类型简介 (8)

2.4.2 宽边纵向半波谐振缝隙 (10)

2.4.3 宽边横向半波谐振缝隙 (11)

2.4.4 窄边斜半波谐振缝隙 (11)

2.5 典型波导缝隙阵天线介绍 (12)

2.5.1为开在宽壁上的横向谐振缝隙阵 (12)

2.5.2 纵向谐振缝隙阵 (13)

2.5.3 纵向谐振缝隙阵二 (13)