摘要在现代的通信领域当中,随着科学技术的飞速发展,微波滤波器起着越来越重要的角色。滤波器在雷达、导航、卫星、测试仪的关键环节中均有使用,正是在这样的背景下,人们对滤波器的要求越来越高,使得滤波器正朝着高性能、小型化、低成本的目标发展。本课题主要基于对多模谐振性原理的微带滤波器来进行研究和设计,利用数值仿真对多模谐振型微带滤波器进行分析,获得优化了的耦合结构,从而使滤波器更加符合小型化和高性能的目标。22401
本文主要包含以下几点:
首先对电磁波传播的基本理论以及多模谐振型滤波器的基本设计原理进行主要的介绍。
然后通过HFSS商用软件来对几种不同的多模谐振滤波器建立模型,并且对其进行数值仿真分析,得出此模型所输出的波形图。
最后通过观察和分析所得出的图形来得到合理的优化设计参数,从而得到此模型下所能输出的最优图形和最合适参数。
关键字: 多模谐振型滤波器 HFSS仿真 建立模型 优化设计参数
毕业论文设计说明书(论文)外文摘要
Title Simulation and design of multimode resonant microstrip filter
Abstract
Among modern communications, with the rapid development of science and technology, microwave filters play an increasingly significant role.Filters are used in the key steps such as radar, navigation, satellite, tester,and people request the filter perform better and better.In this context, the goals which filter is made for are high performance, small size, low-cost development .The main subject bases on the principle of a multimode resonant microstrip filter design and research, and the numerical simulation of the multimode resonant microstrip filter is analyzed to obtain optimization of the coupling structure.As a result , filters ,so that, move on a small-size and high performance goals.
This paper includes such aspects:
Firstly, the basic design principles of the electromagnetic wave transmission and the basic theory of multimode resonant filter are mainly introduced.
Secondly, the commercial software HFSS is used to establish several different modals of multimode resonator filters and analysis its numerical simulation,and obtain the model output waveform.
Finally,it is easy to get a reasonable optimal design parameters through observation and analysis of the results from the graphics, resulting in the optimal graphics and the most suitable parameters of this model.
Key word: Multimode resonant filter HFSS simulation modeling
optimization of design parameters
目录
Abstract 3
第一章 绪论 3
1.1研究背景及意义 3
1.2国内外研究现状 4
1.3本文的主要工作以及内容安排 5
第二章 微波滤波器的基本概念 7
2.1微波滤波器的原理 7
2.2滤波器的技术指标 7
2.3理想低通滤波器的设计 9
2.4.1最平坦型低通滤波器 10
2.4.2切比雪夫低通滤波器 10
2.4.3椭圆函数低通滤波器 11
2.5滤波器变换 12
2.5.1低通滤波器向高通滤波器变换 13
2.5.2低通滤波器向带通滤波器变换 13
2.5.3低通滤波器向带阻滤波器变换 14
2.6滤波器的实现 14
2.6.1理查德变换 15
2.6.2科洛达恒变换 15
第三章 双模滤波器的基本原理 16 HFSS多模谐振型微带滤波器的仿真:http://www.751com.cn/tongxin/lunwen_15014.html