| 基于DSP的频率特性测试仪设计 |
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| 引用本文： | 文时祥,赵菁. 基于DSP的频率特性测试仪设计[J]. 电子科技, 2011, 24(5): 41-43 |
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| 作者姓名： | 文时祥 赵菁 |
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| 作者单位： | (西安电子科技大学 电子工程学院,陕西 西安 710071) |
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| 摘 要： | 基于直接数字频率合成技术的思想,采用现代数字信号处理和显示技术,设计了一台低成本、数字化、智能化的频率特性测试仪.实现了对20 Hz-150 MHz范围内任意频段的被测网络幅频特性和相频特性测量.完成了数据存储、-3 dB带宽计算、峰值查找等功能,幅度检测精度达到1 dBm,相位检测精度1°等指标.
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| 关 键 词： | DSP DDS 幅频测量 相频测量 |
Design of a Frequency Response Analyzer Based on DSP |
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| Wen Shixiang,Zhao Jing. Design of a Frequency Response Analyzer Based on DSP[J]. Electronic Science and Technology, 2011, 24(5): 41-43 |
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| Authors: | Wen Shixiang Zhao Jing |
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| Affiliation: | (School of Electronic Engineering,Xidian University,Xi'an 710071,China) |
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| Abstract: | The paper proposes a method of designing a low cost,digital and intelligent frequency tester,with the use of modern digital signal processing and display technology based on Direct Digital Synthesis.The system realizes the frequency and phase measurement of tested network from a range of 20 Hz to 150 MHz,and completes the function of the data storage,-3 dB bandwidth calculation,peak search and so on.The structure achieves a range of precision of 1dBm and phase detection accuracy of 1 degree. |
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| Keywords: | DSP DDS amplitude characteristic measurement phase characteristic measurement |
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