摘要天线是无线通信和雷达系统的关键部件之一。近些年，毫米波天线成为雷达研究的热 点，其中，波导缝隙天线有着广泛的应用，尤其在高速飞机等要求低轮廓或嵌入式安装的 场合。通过改变波导缝隙天线的缝隙偏置距离，可以实现预想的天线口径分布，从而实现 天线的低副瓣特性。本文第一部分概述了波导缝隙天线的研究背景和国内外研究状况。第 二部分介绍了波导缝隙天线的基本理论，包括波导天线的基本电参数、波导缝隙天线的几 种等效电路的计算方法以及缝隙之间的互耦及其计算方法。第三部分讨论了泰勒加权在工 程上应用广泛的低副瓣口径分布，介绍了泰勒分布幅值的计算方法，利用傅里叶变换的方 法研究泰勒分布的副瓣特性，给出宽边纵向并联缝隙的理论设计方法和步骤。第四部分利 用仿真软件 HFSS 设计了一个 1*60 缝隙的波导裂缝阵天线，并根据所要实现的目的对波导 数据进行了优化。第五部分对天线的仿真结果进行分析和对本文的总结。将结果与理论值 相比较。73795
毕业论文关键词：毫米波 波导缝隙天线 泰勒分布 副瓣特性
Title Design of Ka-band waveguide slot antenna array
Abstract Antenna is one of the key components in wireless communication and radar systems。 In recently years, millimeter wave antenna is a hot spot of radar system。 And the wave guide slot antenna has been widely used, especially in high speed aircraft fields such as low profile and embedded installation required。 By changing the waveguide slot antenna aperture antenna offset distance to achieve the expected diameter distribution, so as to r ealize the low sidelobe characteristics of antenna。The research background of waveguide slot antenna and the research status at home and abroad are introduced in section I。 The basic theory of waveguide slot antenna, including the basic electrical parameters of the waveguide antenna, several kinds of the calculation method of equivalent circuit wavegui de slot antenna, and calculation methods of the mutual coupling between cracksare given in section II。The t discussion of the Taylor weighting is applied widely in engineering of low sidelobe aperture distribution, introduces the method for calculating the amplitud
e distribution of Taylor, the method of using Fourier transform to study the distribution of Taylor sidelobe characteristics, gives the broad-brimmed design methods and steps of vertical parallel cracks theory are given in section III。The fourth part Numerical simulati on of 1*60 waveguide slot antenna array is carried out by HFSS。, and according to the need to achieve the purpose of the waveguide data for the design, parameters for measu ring results and theory basic same。 Parameter analysis and error analysis of proposed ant enna are given in section V。Comparing the results with the theoretical value。
Keywords: HFSS的Ka波段波导缝隙天线阵列设计研究:http://www.youerw.com/tongxin/lunwen_83497.html