基于恒功耗的CMOS低噪声放大器噪声系数优化计算  

CMOS low noise amplifier noise coefficient optimization calculation based on constant power consumption

作　　者：王丹丹[1] 王军[1] 王林[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010

出　　处：《电子技术应用》2017年第2期22-25,共4页Application of Electronic Technique

基　　金：国家自然科学基金(69901003)

摘　　要：在恒功耗条件下,通过考虑以往被忽略掉的栅极寄生阻抗和外加电容对噪声放大器噪声系数的影响,结合低噪声放大器(LNA)的等效小信号模型,推导出噪声系数表达式,提出恒功耗条件下噪声优化的方法。同时对提出的噪声系数优化方法进行MATLAB理论仿真,在ADS软件中对理论结果进行仿真验证。Based on constant power conditions, this paper by previously overlooked gate parasitic resistance and capacitance influence aim at noise amplifier noise coefficient, combined with the low noise amplifier（LNA） equivalent small signal model, noise coefficient expression is derived, and under constant power noise optimization method is proposed. Meanwhile the theory of the MATLAB simulation for raised noise coefficient optimization method and the simulation carried out to verify the theoretical results in ADS software.

关 键 词：恒功耗 低噪声放大器 噪声系数 优化方法 

分 类 号：TN386.1[电子电信—物理电子学]