Time-domain Implementation of Gaussian-like Wavelet Transform
HU Qin-chu · Journal of Guangxi Normal University · 2013
This paper presents an analog and timedomain implementation of Gaussianlike 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.