| 混合滤波器组ADC系统的频响分析与量化噪声研究 |
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| 引用本文： | 彭安金,陈向东,古天祥.混合滤波器组ADC系统的频响分析与量化噪声研究[J].系统工程与电子技术,2003,25(9):1068-1071. |
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| 作者姓名： | 彭安金 陈向东 古天祥 |
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| 作者单位： | 1. 电子科技大学自动化系,四川,成都,610054
2. 西南交通大学计算机与通信工程学院,四川,成都,610031 |
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| 摘 要： | 根据带通采样定理对混合滤波器组ADC系统的抽取过程进行了系统理论分析,得到其失真/混迭函数。利用混合滤波器组ADC系统之综合滤波器组的多相结构,对混合滤波器组ADC系统量化噪声进行了详细研究。所得的理论结果为混合滤波器组ADC系统的失真/混迭函数与开关电容滤波器组ADC系统的失真/混迭函数一致,且混合滤波器组ADC系统的分辨率比其ADC提高了0.51og2M比特。
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| 关 键 词： | 失真/混迭函数 量化噪声 分辨率 混合滤波器组ADC系统 开关电容滤波器组ADC系统 |
| 文章编号： | 1001-506X(2003)09-1068-04 |
| 修稿时间： | 2002年3月7日 |
Frequency Response Analysis and Quantization Noise Study for Hybrid Filter Bank ADCs |
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| PENG An-jin,CHEN Xiang-dong,GU Tian-xiang.Frequency Response Analysis and Quantization Noise Study for Hybrid Filter Bank ADCs[J].System Engineering and Electronics,2003,25(9):1068-1071. |
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| Authors: | PENG An-jin CHEN Xiang-dong GU Tian-xiang |
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| Abstract: | In this paper, the decimation process of hybrid filer bank ADCs is analyzed mathematically with the bandpass sampling theorem and its distortion/aliasing functions are abtained. On the basis of the distortion/aliasing functions, quantization noise of hybrid filter bank ADCs is studied with polyphase structure of its synthetic filter bank in detail. The results are: (1) the distorion/aliasing function of hybrid filter bank ADCs is similar to that of switch capacitor filter bank ADCs; (2) the resolution of hybrid filter bank ADCs is 0.5log2 M bit higher than its ADC. |
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| Keywords: | Distortion/aliasing functions Quantization noise Resolution Hybrid filter bank ADCs Switch capacitor filter bank ADCs |
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