基于增益可调放大器的低功耗CMOS前端信号检测研究  

On Low Power CMOS Front-end Signal Detection Based on Gain Adjustable Amplifier

作　　者：李铮[1] LI Zheng(School of Information Engineering, Huangshan University, Huangshan Anhui 245041, China)

机构地区：[1]黄山学院信息工程学院,安徽黄山245041

出　　处：《菏泽学院学报》2020年第2期22-27,共6页Journal of Heze University

摘　　要：针对传统CMOS前端信号检测存在准确率较差且信噪比偏低,提出基于增益可调放大器的低功耗CMOS前端信号检测方法.构建低功耗CMOS前端信号接收模型,采用前馈滤波检测方法对低功耗CMOS前端信号滤波,采用高分辨的信号特征分解技术实现前端信号的增益放大和特征分离,提取低功耗CMOS前端信号的谱特征量,采用自相关波束形成方法进行低功耗CMOS前端信号的输出集成.根据信号增强输出结果进行增益可调放大处理,构建增益可调放大器,实现低功耗CMOS前端信号检测优化.实验结果表明,该低功耗CMOS前端信号检测结构准确性较好,特征分辨力较强,信号输出的信噪比较高,验证了研究方法的较强应用性能.In view of the poor accuracy and low SNR of traditional CMOS front-end signal detection,this study proposes a low-power CMOS front-end signal detection method based on gain adjustable amplifier.A low-power CMOS front-end signal receiving model is constructed,and the front-end signal is filtered by the feed-forward filter detection method.The gain amplification and feature separation of the signal are realized by the high-resolution signal feature decomposition technology.The spectral feature of the front-end signal is extracted.The output integration of the low-power CMOS front-end signal is carried out by the autocorrelation beam-forming method.According to the results of signal output enhancement,the gain adjustable amplifier is constructed to optimize the signal detection.The experimental results show that the developed low-power CMOS front-end signal detection structure has good accuracy,strong feature resolution and high signal-to-noise ratio of signal output,which verifies the strong application performance of the method.

关 键 词：增益可调 放大器 低功耗 CMOS前端信号 检测 

分 类 号：TN919.6[电子电信—通信与信息系统]