24 October 2006 Balanced log-domain wavelet filters
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To meet the ultra low-power and low-voltage applications,this paper presents a analog VLSI implementation of DOG wavelet transform using a balanced log-domain integrator with class AB. The circuits of implementing wavelet transform are composed of analog filter ,whose impulse response is the required wavelet . Levenbery-Marquardt nonlinear least square method is employed to obtain the transfer function of the filter.The filter design is based on IFLF structure with balanced log-domain integrators as the main building blocks.By changing the values of the log-domain integrators bias currents, this circuit can realize various scales wavelet transform. And the validity of the proposed method is confirmed by Pspice simulation results.
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Hong-min Li, Hong-min Li, Yi-gang He, Yi-gang He, } "Balanced log-domain wavelet filters", Proc. SPIE 6357, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence, 63570I (24 October 2006); doi: 10.1117/12.716902; https://doi.org/10.1117/12.716902

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