级联放大器噪声因子公式的推导及一种新颖的理解方式  

Deduction of Cascade Amplifier Noise Factor Formula and a New Way of Understanding

作　　者：宋青[1] 王强[1] 杨宗帅[1] 

机构地区：[1]成都信息工程学院通信工程学院,成都610103

出　　处：《实验科学与技术》2014年第6期33-35,共3页Experiment Science and Technology

摘　　要：对放大器而言,噪声因子是最重要的技术指标之一,尤其是低噪声放大器。加强对噪声因子的理解,有助于优化放大器的噪声因子,提高放大器的性能。文中对级联放大器噪声因子公式作了详细的推导,并提出了一种新颖的理解方式。Noise factor is the most important one of the technical indicators for amplifier,especially for the low noise amplifier. It is useful for us to optimize amplifier noise factor and improve the performance of the amplifier through strengthening the understanding of the noise factors. This paper deduces the cascade amplifier noise factor formula and puts forward a novel way of understanding.

关 键 词：级联放大器 噪声因子 噪声系数 公式 

分 类 号：TN727[电子电信—电路与系统]