| 基于DDS的网络导纳分析仪设计 |
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| 引用本文： | 钟卫,冯煦,吴修林,胡岸然. 基于DDS的网络导纳分析仪设计[J]. 电子技术, 2010, 47(3): 62-64 |
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| 作者姓名： | 钟卫 冯煦 吴修林 胡岸然 |
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| 作者单位： | 武汉大学,电子信息学院 |
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| 摘 要： | 以单片机89S52和FPGA为控制核心,采用数字频率合成技术(DDS)产生正弦信号,信号频率范围100Hz～10kHz,步进100Hz可调。通过后级滤波和放大,将信号输出电压峰-峰值稳定在1V。网络的响应经I/V转换电路后,进行幅值和相位的测量,从而实现了对未知网络导纳模、导纳角、电导和电纳分析的功能。系统增加了量程自动切换和网络导纳频率特性曲线显示的功能,采用矩阵键盘和点阵式液晶显示器,人机界面友好,操作简单方便。
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| 关 键 词： | 直接数字频率合成器 I/V转换电路 导纳分析 |
Design of DDS-Based Admittance Analyzer |
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| Zhong Wei,Feng Xu,Wu Xiulin,Hu Anran. Design of DDS-Based Admittance Analyzer[J]. Electronic Technology, 2010, 47(3): 62-64 |
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| Authors: | Zhong Wei Feng Xu Wu Xiulin Hu Anran |
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| Affiliation: | School of Electronic Information;Wuhan University |
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| Abstract: | This system is mainly controlled by 89S52SCM and FPGA,and uses DDS technology to generate Sinusoid signal ranging from 100Hz to 10kHz,and 100Hz step adjustable. With the adoption level filtering and amplification,the signal output voltage peak-to-peak is stabilized at 1V through level filtering and amplification. The response of the network is passed I/V conversion circuit,then is carried out amplitude and phase measurements,so that realizing the analysis functions of network's unknown admittance mode,admit... |
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| Keywords: | DDS I/V conversion circuit admittance analysis |
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