小波变换的开关电流电路实现  

Implementation of wavelet transform based on switched current circuits

作　　者：胡沁春 霍平 尤小泉 张松 郭丽芳 谭化勇 Hu Qinchun;Huo Ping;You Xiaoquan;Zhang Song;Guo Lifang;Tan Huayong(School of Network and Communication Engineering,Chengdu Technological University,Chengdu 611730,China;School of Electrical Engineering,Chengdu Technological University,Chengdu 611730,China)

机构地区：[1]成都工业学院网络与通信工程学院,四川成都611730 [2]成都工业学院电气工程学院,四川成都611730

出　　处：《电子技术应用》2018年第10期37-40,共4页Application of Electronic Technique

基　　金：四川省教育厅资助重点科研项目(15ZA0311);国家级大学生创新创业训练计划项目(201711116021)

摘　　要：为更好地满足工程应用中低功耗、实时信号处理的需要,提出了一种基于开关电流电路的小波变换实现。研究了小波变换在时频两域的实现原理,采用开关电流电路实现冲激响应为高斯一阶导数的小波滤波器,通过调节时钟频率可实现不同尺度的小波变换,提出方法的有效性得到了仿真结果的验证。In order to meet the engineering application requirement for low-power and real-time signal processing,an implementation of wavelet transform using switched current(SI)technique is presented in this paper.The working principles of wavelet transform,both in time-domain and frequency-domain are discussed.The circuits are composed of analog filter banks whose impulse responses are the first derivative of Gaussian.By adjusting the clock frequency of SI circuits,the wavelet transform in differential scales are able to be performed.The good performance of the proposed method is verified by simulated results.

关 键 词：小波变换 时域 频域 开关电流 

分 类 号：TN713[电子电信—电路与系统]