摘要
传统基于傅立叶分析和频谱分析仪的微弱信号检测方法无法对1/f噪声进行实时、高速、精确的测量与分析。本文在以虚拟仪器为平台,内嵌小波分析的低频噪声检测系统基础上对1/f噪声进行了实验和理论研究。实验结果表明,该系统能够检测到的1/f噪声幅值比传统的测试方法低2个数量,以小波理论构建的两个参量更深入细微地表征了1/f噪声特性:模极大值分布能够鉴别不同类型的1/f噪声产生机构,相似系数可描述应力对器件1/f噪声的影响。
As a traditional method, the system based on Fourier analysis and frequency spectrum analyzer can not be used to test 1/f noise timely, fast and accurately. A testing and analyzing system based on wavelet analysis and virtual instrument is set up, by which 1/f noise is studied in theory and experiment. Experimental results demonstrate that this system can be used to test 1/f noise which is lower two scale than what can be tested by a traditional system. Two parameters are presented based on wavelet theory and are well used to characterize 1/f noise： wavelet maxima can be used to probe differect generation mechanisms of 1/f noise and similarity coefficient to picture effects of stress on 1/f noise.
出处
《电子器件》
EI
CAS
2006年第2期369-372,共4页
Chinese Journal of Electron Devices
基金
国家自然科学基金资助(60276028)
国防预研基金资助(51411040601DZ014)
国防科技重点实验室基金资助(51433030103DZ01)
关键词
小波分析
虚拟仪器
1/f噪声
模极大值
相似系数
wavelet analysis
virtual instrument
1/f noise
wavelet maxima
similarity coefficient
