Journal of Guangxi Normal University(Natural Science Edition) ›› 2013, Vol. 31 ›› Issue (4): 18-22.

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Time-domain Implementation of Gaussian-like Wavelet Transform Based on Switched Current Circuits

HU Qin-chun1,2, HE Yi-gang3, HE Jing1   

  1. 1.School of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;
    2.Department of Electrical and Electronic Engineering,Chengdu Technological University,Chengdu Sichuan 611730, China;
    3.School of Electrical Engineering and Automation,Hefei University of Technology,Hefei Anhui 230009,China
  • Received:2013-05-16 Online:2013-12-20 Published:2018-11-26

Abstract: This paper presents an analog and time-domain implementation of Gaussian-like wavelet transform using switched current (SI) circuits.Gaussian-like wavelet transforms,existing common factors in time-domain expressions,can be realized by shared structure using SI technique.SI Gaussian unit plays a very important role in the analog implementation of Gaussian-like wavelet transform and it can be easily implemented with the cascade of SI first order circuits and second order circuits.The rational form of Gaussian function can be given by Pade transformation.By changing the frequency of SI circuits,Gaussian-like wavelet transform at various scales can be performed.The good performance of the proposed method is verified by simulated results.

Key words: Gaussian, wavelet transform, time-domain, switched current, shared structure

CLC Number: 

  • TN710
[1] 李目,何怡刚.基于开关电流双线性积分器的IFLF小波滤波器设计[J].电路与系统学报,2013,18(2):191-195.
[2] 王友仁,祝呜涛,任晋华,等.面向多功能模拟信号处理的开关电流型可重构模拟电路研究[J].电子学报,2011,39(5):1047-1052.
[3] WILSON P R,WILCOCK R,AL-HASHIMI B M.Fully integrated 533 MHz programmable switched current PLL in 0.012 mm2[J].Electronics Letters,2008,44(22):1297-1298.
[4] 胡肖松,王卫东.一种多功能可调开关电流双二次滤波器的实现[J].电路与系统学报,2011,16(6):46-50.
[5] 王芳,季忠,彭承琳.基于双树复小波变换的心电信号去噪研究[J].仪器仪表学报,2013,34(5):1160-1166.
[6] 周炎岩,冯嘉礼.基于定性映射的数字音频水印算法[J].广西师范大学学报:自然科学版,2011,29(2):200-204.
[7] 宋凯,尹志富,祁燕,等.改进的小波多尺度频域增强算法[J].广西师范大学学报:自然科学版,2007,25(4):14-17.
[8] 马岚,王厚军.基于复互小波分析的模拟电路故障诊断方法[J].电子科技大学学报,2013,42(3):380-384.
[9] 胡沁春.小波变换的开关电流技术实现研究[D].长沙:湖南大学,2007:65-76.
[10] 胡沁春,黄立宏,何怡刚,等.Morlet小波变换的开关电流模拟实现[J].湖南大学学报:自然科学版,2009,36(2):58-61.
[11] de QUEIROZ A C M,PINHEIRO P R M,CALOBA L P.Nodal analysis of switched-current filters[J].IEEE Transactions on Circuits and Systems Ⅱ:Analog and Digital Signal Processing,1993,40(1):10-18.
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