摘要波导缝隙天线具有高效率、高增益、低副瓣的优点，因此被广泛应用于现代天线技 术中，而脊波导缝隙天线由于其宽频特性受到广大学者的关注。

本文主要介绍了 Ku 波段脊波导缝隙天线阵设计，在此基础上做了圆极化波导缝隙阵 列设计。首先，对缝隙天线的研究意义、国内外发展现状进行了简单介绍。其次，对天 线的基本电参数，缝隙天线的设计原理等基础知识进行简单分析。接着对单脊波导采取 宽边开纵缝的方法得到相应驻波阵，并用 Taylor 算法进行降低副瓣电平处理，分析了天 线的主要性能。最后，采用单脊波导作为馈电结构，四脊波导作为极化波导做圆极化处 理，并简单介绍圆极化的原理，仿真了 Ku 波段驻波阵圆极化 16 阵列，通过观察轴比 特性进行仿真分析。77313

毕业论文关键词 圆极化 四脊波导 Ku 波段 脊波导缝隙天线阵列 Taylor 算法

毕 业 设 计 说 明 书 外 文 摘 要

Title Design and Research of The Ku-Band Novel Shaped Waveguide Slot Antenna Array

Abstract Waveguide slot antennas have the advantages of high efficiency, high gain and low sidelobe, so it is widely used in modern antenna technology。 Due to the wide band characteristic, the ridge waveguide slot antenna is concerned by the majority of scholars。

This paper mainly introduces the design of a Ku-band ridge waveguide slot antenna array。 Based on this, the design of circular polarized waveguide slot array is then presented。 First of all, the significance of the research, the domestic and foreign development situation of the slot antenna is briefly introduced 。 Secondly, the basic electrical parameters of the antenna and the design principle of slot antenna are briefly analyzed。 Then the single ridge waveguide get corresponding standing wave array by the method of taking broadside longitudinal seam。 Taylor algorithm is used to reduce the sidelobe level。 This paper analyzes the main performance of the antenna。 Finally, the single ridge waveguide is used as the feed structure, and the four ridge waveguide is used as the polarization waveguide to realize circular polarization。 And the principle of circular polarization is briefly introduced, then the circular polarization 1 6 array of Ku-band waveguide is simulated, and the performance of circular polarization is carried out by observing the characteristics of axial ratio。

Keywords Circular polarization Four ridge waveguide Ku-band  Ridge waveguide slot antenna array  Taylor algorithm

本科毕业设计说明书 第 I 页

目 次

1 引言 1

1。1 研究背影与意义 1

1。2 国内外研究现状 1

1。3 本论文的主要研究内容 2

2 波导缝隙天线理论分析 4

2。1 波导缝隙天线概述 4

2。2 波导缝隙天线的形式和等效电路 5

2。3 缝隙阵列分类 7

2。4 天线电参数