用LMS算法消除开关噪声对射频接收机的影响

›› 2016, Vol. 29 ›› Issue (10): 9-.

用LMS算法消除开关噪声对射频接收机的影响

吴振淇，卜刚，孔梦华

(南京航空航天大学电子信息工程学院，江苏南京 211106)

出版日期:2016-10-15 发布日期:2016-11-14
作者简介:吴振淇（1991-），男，硕士研究生。研究方向：集成电路设计。孔梦华（1988-），男，硕士研究生。研究方向：模数混合集成电路设计。
基金资助:
江苏省自然科学基金资助项目（BK2012792）

Elimination of the Influence of Switching Noise on RF Receiver by LMS Algorithms

WU Zhenqi, BU Gang, KONG Menghua

(College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)

Online:2016-10-15 Published:2016-11-14

摘要/Abstract

摘要：

针对DC-DC开关电源在为射频接收机供电时，引入过大的电源纹波噪声干扰问题，提出用LMS算法从基带消除纹波噪声干扰的解决方案。从纹波噪声建模出发，根据ZigBee标准利用Simulink仿真工具，搭建了带电源纹波噪声干扰的射频接收机仿真模型，并利用两级LMS算法调整的自适应滤波器，从基带消除纹波噪声干扰。仿真结果显示，在100 mV以下的纹波电压情况下，带LMS算法噪声消除的射频接收机系统仍能正常工作；超过100 mV后，算法能减小纹波噪声对射频接收机的干扰。

关键词: 开关噪声, 射频接收机, LMS算法

Abstract:

For the application of the RF receiver with DCDC switch power supply, the LMS algorithm is proposed to eliminate the interference from the base band because of too large power ripple noise. Starting from the ripple noise modeling, according to the ZigBee standard, an RF receiver simulation model with ripple noise interference is built using Simulink. The adaptive filter based on the two stage LMS algorithm is used to eliminate the ripple noise from the baseband. The simulation results show that the RF receiver system with LMS algorithm noise elimination can work normally at ripple voltages less than 100 mV, and that the LMS algorithm can reduce the interference of the ripple noise to the RF receiver at voltages greater than 100 mV.

Key words: SMPS ripple noise, RF receiver, LMS algorithms

中图分类号:

TN851

吴振淇，卜刚，孔梦华. 用LMS算法消除开关噪声对射频接收机的影响[J]. , 2016, 29(10): 9-.

WU Zhenqi, BU Gang, KONG Menghua. Elimination of the Influence of Switching Noise on RF Receiver by LMS Algorithms[J]. , 2016, 29(10): 9-.

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