| 计算机控制的宽带频率特性测试系统 |
| |
| 引用本文： | 钟清华.计算机控制的宽带频率特性测试系统[J].电子工程师,2004,30(6):13-15. |
| |
| 作者姓名： | 钟清华 |
| |
| 作者单位： | 华南师范大学,广东省,广州市,510631 |
| |
| 摘 要： | 介绍了计算机控制的宽带频率特性测试系统的设计.主控计算机通过RS-232C口向基于单片机的频率特性测量电路输出频率控制字,并控制AD9854 DDS芯片产生宽带的扫频信号.利用AD8302的增益/相位测量功能实现了幅频特性与相频特性的测试,并结合A98854的正交输出解决了AD8302不能区分相位超前与滞后的问题.系统用户界面良好,具有较高的性价比.
|
| 关 键 词： | 频率特性测试系统 |
| 修稿时间： | 2004年3月24日 |
A Computer Controlled Wide Band Frequency Response Measurement System |
| |
| Zhong Qinghua.A Computer Controlled Wide Band Frequency Response Measurement System[J].Electronic Engineer,2004,30(6):13-15. |
| |
| Authors: | Zhong Qinghua |
| |
| Abstract: | Design of computer controlled wide range frequency response measurement system is introduced. The main computer sends the frequency tuning words to the microcontroller based measuring circuits through RS-232C,and the scanning frequency signal is produced by controlling the AD9854 DDS chip. Using the gain/phase measurement function of AD8302,the frequency response is measured in wide band. The problem of distinguishing phase lead or lag is solved by combining with the quadrature output of AD9854. The system has good interface for man and machine,and has high performance/cost ratio. |
| |
| Keywords: | AD9854 AD8302 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
