HFSS微波阶跃阻抗滤波器设计
本文从基础知识出发，首先对SIR滤波器国内外研究现状进行归纳分析，提出了本文的研究意义和工作内容。随后介绍了微波网络和谐振器的基本理论，理论计算了滤波器设计中涉及的各项指标，重点讲述了几种不同类型的SIR谐振器，并对相关公式进行了严密的推导。25213
随后，本文探究了一般滤波器的设计方法，并学习了仿真软件HFSS。最后，设计了一个SIR带通滤波器，并对设计方案进行了仿真优化。
关键词 微波系统 微带线 阶跃阻抗谐振器 滤波器
毕业论文设计说明书外文摘要
Title Design of Stepped Impedance Resonator Filter
Abstract
With the growing development tendency of high performance and miniaturization of microwave communication systems，the demand for filters is on course for drastic growth as the significant element of fundamental circuit in the communication system.SIR filters are getting favoured because of their admirable performance,compact constructions and extensive applicabilities，and play an important role in different system circuits，especially in the field of communication.
From the beginning of knowledge basement,this paper concludes and analyzes the overseas and domestic research situation，and proposes the research significance and the work content of this paper,then introduces the fundamental theory of microwave networks and resonators,calculates the referred various index of the filter theoretically,represents several different types of SIR resonator chiefly and deduces the related formulas exactly.
Whereafter,this paper explores design approachs of regular filters and studies the simulation software HFSS.Finally,this paper designs a SIR band-pass filter and makes a simulation optimization of the design project.
Keywords microwave communication systems microstrip line
stepped impedance resonator filter
目 次
1 引言 1
1.1 研究背景 1
1.2 谐振器简介 1
1.3 阶跃阻抗谐振器(SIR) 2
1.4 HFSS软件介绍 3
1.5 主要研究内容 4
2 微波网络分析 5
2.1 二端口网络的矩阵表示 5
2.2 二端口网络分析 9
2.3 本章小结 10
3 微波谐振器简述 11
3.1 谐振器结构 11
3.2 谐振频率的计算 11
3.3 谐振器的无载Q值 14
3.4 本章小结 17
4 SIR概述 18
4.1 SIR基本结构 18
4.2 SIR谐振条件 19
4.3 SIR的电长度 20
4.4 杂散谐振频率 22
4.5 四分之一波长型SIR 23
4.6 半波长型SIR 23
4.7 本章小结 25
5 滤波器设计与仿真 26
5.1 滤波器设计指标 26
5.2 滤波器建模过程 26
5.3 滤波器仿真调试 31