Approximations of the inverse wavelet transform for analogue circuits
- Gurrola-Navarro, M.A.
- Medina-Vazquez, A.S.
- Espinosa-Flores-Verdad, G.
Publication date
January 2012
DOI Publisher
Institute of Electronics, Information and Communications Engineers (IEICE)Abstract
We propose two approximations of the inverse wavelet transform implemented with a voltage adder and two analog filters. They work together with a set of scaled band-pass analog filters that perform the wavelet transform of a continuous time signal. With this approach an integrated circuit has been fabricated. On-chip measurements demonstrate signal to reconstruction error ratios up to 25.8 dB
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