The implementation of Wavelet Transform based on log-domain circuits

Continuous Wavelet Transform (CWT) is a highly useful processing technique. It is based around a mother wavelet function which acts as a bandpass filter. This paper proposed a general log-domain filter for the implementation of continuous wavelet transform. The proposed approach describes a log-domain filter as a basic building block of CWT using multiple loop feedback structures. Simulation results are also given by using PSPICE. The proposed circuits are suitable for low-voltage low-power operation and high-frequency application.