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
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