40纳米工艺的微波宽带带通滤波器的设计

安徽大学

本科毕业论文(设计、创作)

题 目： 40纳米工艺的微波宽带带通滤波器的设计 学生姓名：

院（系）： 电子信息工程学院 专业： 微电子学 入学时间：月 导师姓名：职称/学位：导师所在单位： 安徽大学电子信息工程学院 完成时间： 2014 年 6 月

40纳米工艺的微波宽带带通滤波器的设计

摘 要

由于频率资源日益紧缩化的出现，在通信系统中为了得到有用信号，微波滤波器扮演着越来越重要的角色。可以看出，整个通信网络的优劣直接受到滤波器性能的影响。如今，微波滤波器无论在民用通信还是军用通信都已被广泛应用。这样微波滤波器的性能也必须越来越高才行。通带的宽度，阻带的抑制度以及相关的损耗将成为当今通信方面主要考虑的技术指标。随着集成电路面积的日趋紧张体积和成本也成为所有设计者关心的话题。

本论文主要是在ADS平台上设计中心频率为30GHz，带宽为20GHz 40GHz毫米波宽带宽带带通滤波器的设计。带通滤波器是利用谐振电路来实现其滤波功能。利用ADS平台搭建一个并联谐振电路并进行电磁仿真后发现虽然其具有滤波功能，但是其阻带衰减较差。本设计在原有的并联谐振中间串联了一个低通滤波器，该滤波器的阻带抑制度和矩形系数明显提高。本设计的难度在于不知道原有衬底的参数，所以必须进行电磁仿真利用阻抗匹配的性质确定所需要的微带线的特征阻抗

关键词：带通滤波器；40纳米工艺；微带线 ；插入损耗；电磁仿真

Design of Microwave Broadband Bandpass Filter Based on

40nm Process

Abstract

Due to the frequency resources more and more tight, to get the useful signal, the microwave filter plays a more and more important role in the communication system . AS can seen, the entire network is directly influenced by the performance of the filter. Now microwave filter has been widely applied in both civilian and military communication. The performance of microwave filters must be also more and more high. The bandpass width, suppression of stopband and related loss will be the technical index of communication the main consideration. With the integrated circuit area becoming more tense, volume and cost has been a topic of concern to all designers.

In this paper, the design of millimeter wave broadband bandpass filter with 20GHz-40GHz is mainly based on the platform of ADS . to realize its filtering function ,the resonant circuit is used . Using the ADS platform to build a parallel resonant circuit and electromagnetic simulation ,we find that although it has the filtering function, the stopband attenuation is poor . In this design ，we series a low-pass filter in the parallel resonant intermediate original, the filter stopband rejection and rectangular coefficient increase. the difficulty of the design is that we do not know the originalsubstrate parameters is，so to identify theneeds of the microstrip line , we must get the property of electromagnetic simulation by using the impedance matching

Keywords: Band pass filter; 40 nm process; microstrip line; insertion

loss;electromagnetic simulation

目 录

1 绪论 ................................................................................................................................. 1

1.1 微波滤波器与微波通信 .............................................................................................. 1

1.1.1 微波滤波器在微波通信中的作用 ........................................................................... 1

1.1.2 毫米波宽带带通滤波器研究的意义 ....................................................................... 1

1.2 本课题的发展现状及优缺点 ...................................................................................... 2

2 微波技术的基础知识 ..................................................................................................... 2

2.1 微波网络 ...................................................................................................................... 2

2.2 S参量在滤波器中的应用 .......................................................................................... 3

2.2.1 S参量的基础知识.................................................................................................... 3

2.3 微带线 .......................................................................................................................... 4

2.3.1 终端短路和终端开路微带线 ................................................................................... 4

2.3.2 传输线（ABCD）矩阵 ........................................................................................... 6

2.3.3 微带线的匹配原理 ................................................................................................... 7

2.4 滤波器的基本原型 ...................................................................................................... 8

2.4.1 最大平坦低通滤波器 ............................................................................................... 9

2.4.2 等纹波低通滤波器 ................................................................................................... 9

2.4.3 两种低通滤波器的优缺点比较 ............................................................................. 10

2.4.4 微带滤波器的主要参数 ......................................................................................... 10

3 40纳米工艺的毫米波带通滤波器的设计 ................................................................... 11

3.1 衬底的优化 ................................................................................................................. 11

3.2 设计 ............................................................................................................................. 11

3.2.1 设计思想的来源及原设计的缺点 .......................................................................... 11

3.2. 2 改进方法及步骤 .................................................................................................... 13

3.2.3 设计结论展示 ........................... …… 此处隐藏：4685字，全部文档内容请下载后查看。喜欢就下载吧 ……