| 频率特性测试仪的设计 |
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| 引用本文： | 伍玉,夏新凡. 频率特性测试仪的设计[J]. 国外电子元器件, 2009, 17(2): 30-32 |
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| 作者姓名： | 伍玉 夏新凡 |
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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89C51单片机和FPGA构成的最小系统为核心，实现了一定频带范围内对一个未知四端网络的幅频特性和相频特性的测量。该系统由扫频信号发生器，幅度测量模块，相位测量模块，示波器显示模块等构成。用数字频率合成技术设计扫频信号发生器。用户通过按键测量特定频率的频率特性。扫频测量时，可以选择扫频输出信号的下限和上限以及步进值。示波器显示出幅频和相频的曲线，界面友好。
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| 关 键 词： | 系统频率响应 频率特性测试仪 扫频测试法 现场可编程门阵列 |
Design of frequency characteristic testing instrument |
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| WU Yu,XIA Xin-fan. Design of frequency characteristic testing instrument[J]. International Electronic Elements, 2009, 17(2): 30-32 |
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| Authors: | WU Yu XIA Xin-fan |
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| Affiliation: | School of Electronic Information;Wuhan University;Wuhan 430079;China |
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| Abstract: | Based on the integrated 89C51 microcontroller and FPGA,measurement of amplitude and phase frequency charactristic for an undefined four ends network are realized in a certain frequency scope.The system consists of a scan frequency signal occurrence module,amplitude testing module,phase-difference testing module and the dynamic system response curve display module etc.The scan frequency signal occurrence machine is implemented with DDFS technique.By tapping certain keys,the customers can test the dynamic sys... |
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| Keywords: | system frequency response frequency characteristic testing instrument scan frequency testing method FPGA |
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