| 基于Simulink的Sigma-Delta A/D转换器调制器系统建模 |
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| 引用本文： | 朱樟明,杨银堂.基于Simulink的Sigma-Delta A/D转换器调制器系统建模[J].系统仿真学报,2008,20(24). |
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| 作者姓名： | 朱樟明 杨银堂 |
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| 作者单位： | 西安电子科技大学微电子研究所 |
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| 基金项目： | 国家杰出青年基金
，
国家自然科学基金
，
教育部博士点基金
，
西安应用材料创新基金
|
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| 摘 要： | 基于Sigma-Delta模数转换器结构,采用Simulink仿真工具提出了过采样Sigma-Delta调制器系统建模方法。结合调制器结构参数和电路噪声参数,建立了二阶低通型和二阶带通型过采样Sigma-Delta模数转换器调制器的非理想系统模型,并对调制器的功率谱密度图和信噪比进行仿真,验证了建模方法的正确性。
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| 关 键 词： | 系统建模 Sigma-Delta调制器 噪声 调制器结构 |
Simulink System Model of Sigma-Delta Analog-Digital Converter Modulator |
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| ZHU Zhang-ming,YANG Yin-tang.Simulink System Model of Sigma-Delta Analog-Digital Converter Modulator[J].Journal of System Simulation,2008,20(24). |
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| Authors: | ZHU Zhang-ming YANG Yin-tang |
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| Abstract: | Based on the structure of Sigma-Delta analog-to-digital converter, a system modeling method for over-sampling sigma-delta modulator was proposed by Simulink which is a simulation tool. Considering the modulator structure and the noise of circuits, the non-ideal system model for second-order low-pass and band-pass sigma-delta modulator were founded. For verifying the modeling method, the PSD and SNR of the modulators models was simulated. The proposed modeling method for Sigma-Delta modulator is significant for Sigma-Delta analog-to-digital converter design. |
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| Keywords: | Simulink |
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