| 频率特性测试仪 |
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| 引用本文： | 施智强,何欣,唐铭杰,沈骋曦.频率特性测试仪[J].国外电子元器件,2008,16(12). |
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| 作者姓名： | 施智强 何欣 唐铭杰 沈骋曦 |
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| 作者单位： | 武汉大学,电子信息学院,湖北,武汉,430079 |
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| 摘 要： | 以集成的直接数字合成器(DDS)AD9851为核心,利用现场可编程门阵列(FPGA)及外围测量电路,设计并实现了一个频率特性测试仪,可用于测试某一特定网络的频率特性.并给出了幅频和相频特性曲线,并采用软件修正方法提高了整个系统输出的稳定性和可靠性.
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| 关 键 词： | 幅频特性 相频特性 现场可编程门阵列(FPGA) 单片机 |
A tester for frequency response characteristic |
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| SHI Zhi-qiang,HE Xin,TANG Ming-jie,SHEN Cheng-xi.A tester for frequency response characteristic[J].International Electronic Elements,2008,16(12). |
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| Authors: | SHI Zhi-qiang HE Xin TANG Ming-jie SHEN Cheng-xi |
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| Institution: | SHI Zhi-qiang,HE Xin,TANG Ming-jie,SHEN Cheng-xi(School of Electronic Information,Wuhan University,Wuhan 430079,China) |
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| Abstract: | Based on the integrated DDS chip AD9851,FPGA and external circuits,a tester for frequency response characteristic is designed and implemented.It is able to measure the frequency response characteristic for a certain network and display the amplitude-frequency and phase-frequency curves.And the output stability and reliability of the whole system is enhanced by software. |
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| Keywords: | DDS |
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