基于HFSS的微带低通滤波器设计
关键词 微带低通滤波器 巴特沃兹滤波器 切比雪夫滤波器 HFSS
毕业设计说明书外文摘要
Title Microstrip low-pass filter design based on HFSS
Abstract
With the continuous development of microwave components, microwave filter develops rapidly,which is indebted to the widely use in modern communications , measurement, radar system and so on. The filter is pided into cavity filters, waveguide filters, microstrip filters, stripline filters and coaxial filters according to the filtering functions. Among them, the most widely used is the microstrip filter. Microstrip low-pass filter is superior in small size, high performance,short design cycle,and easy to integrate and manufacture. In addition, along with the continuous advances in computer technology and electromagnetic field numerical calculation, a number of electromagnetic simulation software have emerged, greatly reducing the computational difficulty of circuit design. At present, the major electronic design automation microwave radio fields (EDA) is Ansoft HFSS of Agilent company and so on. Butterworth filter and the Chebyshev filter are two types of filter. Paper will analyze and compare them based on HFSS software.Then we will also analyze the difference between different orders of Butterworth microstrip low-pass filter.
Keywords Microstrip low-pass filter Butterworth filter Chebyshev filter HFSS
目 次
1 引言 1
1.1 滤波器简介 1
1.2 微波滤波器的进展 1
1.3 微带滤波器的进展 1
1.4 ADS和HFSS软件简介 2
1.5 本文研究内容 2
1.6 本文章节安排 3
2 微带传输线理论 4
2.1 基本的微带线结构 4
2.2 微带传输线分析 5
2.3 微带线的设计方法 6
2.4 本章小结 6
3 低通滤波器的设计 7
3.1 巴特沃兹低通滤波器和切比雪夫滤波器的介绍 7
3.1.1 巴特沃兹低通滤波器 7
3.1.2 切比雪夫低通滤波器 9
3.2 滤波器的散射参量介绍及主要技术指标 11
3.2.1 散射参量介绍 11
3.2.2 滤波器的主要指标 12
3.3 低通滤波器的微带实现 12
3.3.1 Richards变换与Kuroda规则 12
3.3.2 高低阻抗线等效法 15
3.4 本章小结 17
4 基于HFSS微带低通滤波器的电路实现 18