Approximations of the inverse wavelet transform for analogue circuits

被引：2
|
作者：
Gurrola-Navarro, Marco A. [1 ]
Medina-Vazquez, Agustin S. [1 ]
Espinosa-Flores-Verdad, Guillermo [2 ]
机构：
[1] Univ Guadalajara, CUCEI, Dept Elect, Guadalajara 44430, Jalisco, Mexico
[2] Inst Nacl Astrofis Opt & Electr, Puebla 72840, Mexico
来源：
IEICE ELECTRONICS EXPRESS | 2012年 / 9卷 / 24期
关键词：
wavelet transform; integrated circuits; analog circuits;
D O I：
10.1587/elex.9.1823
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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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页码：1823 / 1828
页数：6
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