| 用对数域电流模式电路实现连续小波变换 |
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| 引用本文： | 戴媛媛,何怡刚,晏进喜. 用对数域电流模式电路实现连续小波变换[J]. 电路与系统学报, 2005, 10(1): 50-52,39 |
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| 作者姓名： | 戴媛媛 何怡刚 晏进喜 |
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| 作者单位： | 湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金，湖南省杰出青年科学基金，高等学校博士学科点专项科研项目，湖南省科技计划，湖南大学校科研和教改项目 |
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| 摘 要： | 本文提出了用对数域电路实现连续小波变换的一种方法.利用复解调技术将设计带通滤波器组转化为设计相对简单的低通滤波器组问题,给出了分解与重构的系统流程.设计并分析了对数域电流控制振荡电路,对数域积分器和高斯滤波器等主要的模拟电路.
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| 关 键 词： | 连续小波变换 复解调 对数域电路 振荡器 高斯滤波器 |
| 文章编号： | 1007-0249(2005)01-0050-03 |
| 修稿时间： | 2004-03-01 |
Implemntation of continuous wavelet transform by log-domain current mode circuit |
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| DAI Yuan-yuan,HE Yi-gang,YAN Jin-xi, Information Engineering,Hunan University,Changsha ,China ). Implemntation of continuous wavelet transform by log-domain current mode circuit[J]. Journal of Circuits and Systems, 2005, 10(1): 50-52,39 |
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| Authors: | DAI Yuan-yuan HE Yi-gang YAN Jin-xi& Information Engineering Hunan University Changsha China ) |
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| Affiliation: | DAI Yuan-yuan,HE Yi-gang,YAN Jin-xi& Information Engineering,Hunan University,Changsha 410082,China ) |
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| Abstract: | A method of realizing continuous wavelet transform with log-domain circuit is proposed. Each required bandpass filter is reduced to two lowpass filters which are relatively simple in design by using complex demodulation. The decomposition and reconstruction architecture are introduecd. The design and implementation of element circuits including current-controling-oscilator (ICO), log-domain integrator and Gauss filter are also described in detail. |
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| Keywords: | continuous wavelet transform complex demodulation log-domain circuit oscillator Gauss filter |
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