文档介绍：华中科技大学
硕士学位论文
微波低噪声晶体管放大器分析与设计
姓名:潘于
申请学位级别:硕士
专业:微电子与固体电子学
指导教师:吴国安;汤清华
20050509
摘要
在研究了国内外微波低噪声放大器的发展历史结合大量相关文献分析了各种
微波低噪声放大器的优缺点基础上深入研究了微波晶体管低噪声放大器的工作机
理设计出性能指标优异的低噪声放大器
随着计算机水平的高速发展微波分析仿真软件层出不穷传统的设计方法计算
复杂设计效率极低验证结果极其困难我们采用了最新的射频微波分析仿真软件
结合传统的放大器设计理论从单级窄带入手逐步过渡到多级宽带并最后设计出
超宽带低噪声放大器设计过程中我们选用精确的器件模型充分地发挥了微波分
析仿真软件的强大功能大大提高了开发效率同时我们在采用传统理论作为指导的
基础上结合实际的产品制作过程在利用负反馈技术增加低噪声放大器稳定性追求
极低噪声拓宽其工作频段方面提出了自己的一些看法
在完成仿真设计之后结合我所的实际工艺情况选用通用的射频微波元件采
用混合匹配的方法制作出性能优异的微波晶体管低噪声放大器最后利用网络分析
仪功率计噪声测试仪等微波测试仪器对产品进行了测试通过对测试和仿真结果
进行验证摸索出了一条利用现代化射频微波分析仿真软件结合具体的基本理论快
速设计各种要求的微波晶体管低噪声放大器的设计方法

关键词低噪声放大器超宽带器件模型负反馈稳定性

I
ABSTRACT
With the colligation of the developing history of the world’s research on low noise
amplifiers, after studying ings and advantages of many LNA’s, the working theory
of microwave transistor LNA is researched, and a well worked LNA is designed.
With the development of puter, more and more software for microwave
e out. The traditional ways of design is plicated with low design
efficiency, and it is hard to validate the results. We use the newest microwave simulation
bine with mon amplifier design theory, after starting with the
one-order narrowband model, then several-order broadband, finally reached at the super
broadband LNA. In the design process, we choose the ponent model, so the
function of the simulation software is fully exerted and the research efficiency is increased.
At the same time when based on the traditional theories, we give some our own opinions on
how to rise the LNA’s stability, lower it’s noise, and broaden it’s working frequency range
by use negative feedback techniques.
After finishing the simulation, we mon ratio ponents, use the
mixed matching method and then get a well performed LNA. Finally we test our product
with -analyzer, power-analyzer, noise-analyzer and some other apparatus. By the
comparison of the simulation result and the tested result, we e