微波低噪声放大器的设计与仿真+文献综述

摘要低噪声放大器是现代雷达、无线通信、测试仪器和电子对抗系统中的重要部件，它主要将接收机接收到的微弱信号进行放大，同时抑制噪声干扰，提高系统灵敏度。
本论文给出了一种C波段低噪声放大器的设计原理与详细过程。该放大器采用Avago公司的ATF36077晶体管，为达到较高的增益和较低的噪声系数，采用了三级级联。通过使用等噪声系数圆和等功率增益圆的联合设计以满足增益和噪声系数的指标。所有的设计过程都是通过EDA软件ADS完成的，利用其仿真优化功能设计了输入、输出匹配及偏置电路，最后得到的放大器在3.7-4.2GHz的频段内增益为41dB,噪声系数为1dB，满足了设计要求。8501
关键词低噪声放大器噪声系数增益 C波段 ADS
毕业设计说明书（论文）外文摘要
Title     Design and Simulation of Microwave Low-noise Amplifier

Abstract
Low-noise amplifier is an important component of modern radar, wireless communications, test equipment and electronic warfare system. It is mainly to enlarge the weak signal received by the receiver, suppress noise interference and improve system sensitivity at the same time.
We introduced the design principle and detailed process of a C-band LNA. FET ATF36077 of Avago Company was used in this amplifier system. A three-stage topology was used in order to achieve high gain and low noise figure. It is introduced how to use the equal noise figure circle and equal power-gain circle jointly for designing, so as to meet the gain and noise figure indicators. All of the design is completed by using the EDA design software ADS. The matching circuits connecting input and output were designed with the software. The proposed LNA finally satisfied the designing requirements with the gain of 41dB and the noise figure of 1dB in the C-band.
Keywords LNA Noise figure(NF) Gain C-band ADS
目次

1 绪论   2
1.1 研究目的和意义   2
1.2 发展历史和现状   2
1.3   本文研究内容和工作安排   3
2 低噪声放大器和微带线介绍   4
2.1 低噪声放大器的基本概念   4
2.2   微带线   4
3   低噪声放大器的工作指标   5
3.1 S参数   5
3.2   稳定性   6
3.3   噪声系数   6
3.4   增益   6
3.5   驻波比   8
3.6   反射系数   8
3.7   匹配特性   8
3.8   动态范围   9
3.9   小结   9
4 C波段LNA的设计   9
4.1 器件选择   9
4.2 引言   10
4.3   稳定性分析   11
4.4   直流偏置电路设计   13
4.5   噪声和增益设计   17
4.6 总放大电路图   25
4.7 版图设计   27
结论   29
致谢   30
参考文献   31
1 绪论
1.1 研究目的和意义
低噪声放大器是现代雷达、无线通信、测试仪器和电子对抗系统中的重要部件，它主要将接收机接收到的微弱信号进行放大，同时抑制噪声干扰，提高系统灵敏度。微波低噪声放大器的设计与仿真+文献综述:http://www.751com.cn/tongxin/lunwen_6859.html