一种新型噪声消除宽带低噪声放大器
Broadband Low Noise Amplifier Using Improved Noise Cancellation Technology
蓝剑逸 1段吉海 1李冀1
作者信息
- 1. 桂林电子科技大学广西精密导航技术与应用重点实验室,广西桂林 541004
- 折叠
摘要
噪声消除技术是设计低噪声放大器(LNA)时常用的技术之一,而如何解决LNA噪声与功耗的矛盾始终是设计的难点.文章提出一种新型噪声消除结构,通过主辅支路之间添加反馈回路的方式,在不增加功耗的情况下,实现了消除主辅支路噪声的目的.基于180 nm CMOS工艺,设计了一款应用该噪声消除结构的宽带低噪声放大器.仿真结果显示,该LNA的带宽为0.40～2.36 GHz,S11 与 S22 均小于-10 dB,S12 小于-30 dB,最大 S21 为 14.5 dB,噪声系数为 2.20～2.34 dB,功耗仅为9 mW.
Abstract
Noise cancellation is a common technology in the design of low noise amplifiers(LNA).Solving the contradiction between noise and power consumption is the most difficult challenge during the design process.A new noise cancellation structure is proposed in this study.Noise in the main and auxiliary branches is eliminated by adding a feedback loop between the main and auxiliary branches,without increasing power consumption.Based on a 180 nm CMOS technology,a wideband low noise amplifier with the noise cancellation structure is designed.Simulation results show that the bandwidth of the LNA is 0.4-2.36 GHz,both S11 and S22 are less than-10 dB,S12 is less than-30 dB,the maximum S21 is 14.5 dB,the noise factor is 2.20-2.34 dB,and the power consumption is 9 mW.
关键词
噪声消除/低噪声放大器/反馈/辅助支路Key words
noise cancellation/low noise amplifier/feedback/auxiliary branch引用本文复制引用
基金项目
国家自然科学基金(61161003)
广西精密导航技术与应用重点实验室主任基金(DH201806)
广西壮族自治区创新驱动发展专项(AA22068059)
出版年
2024
NETL
NSTL
万方数据