基于开关电流技术的时域连续小波变换实现
doi: 10.3724/SP.J.1146.2005.00089
Time-Domain Implementation of Continuous Wavelet Transform Based on Switched Current
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摘要: 首次提出基于开关电流技术的时域法连续小波变换实现。该方法利用幅度调制技术产生小波链实现小波变换，为小波变换的快速实现提供了新的途径。基于双线性变换采用开关电流积分器综合实现低通滤波器，解决了时域法小波变换实用电路集成化的关键问题。对开关电流低通滤波器用ASIZ进行仿真，结果证实其性能完全满足实用要求。Abstract: Method for realizing time-domain Continuous Wavelet Transform (CWT) using Switched-current (SI) technology is firstly presented in this paper. It is shown a new way for fast implementation of CWT based on amplitude modulation techniques for generating wavelet chain. SI low pass filter is synthesized with SI integrators based on bilinear transform. Thus, It provides a solution to manufacture integrated chip of time-domain CWT. The SI low pass filter is simulated using ASIZ and verified to be able to meet the needs of time-domain CWT.
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