A Method Of Amplitude-Frequency Characteristic Compensation About DDS Signal Source

摘要：

DDS (direct digital synthesis) is widely applied in signal generator.In this paper, amplitude-frequency characteristic of DDS signal after D/A conversion (DAC)was analyzed. Then a method for improving amplitude-frequency characteristic was put forward. The method is based on characteristic of LC parallel circuits that signal can be amplified at resonance frequency. By this method, amplitude attenuation caused by DACis compensated;amplitudefrequencycharacteristic ofDDSsignalis improved. The experiment results indicate that amplitude flatness of arbitrary waveformgeneratorincreases about2dBat0Hz-40MHz.

作者: Liu Ke Tian shulin Xiao Yindong

作者单位: School ofAutomationEngineeringUniversity of ElectronicScienceandTechnology Chengdu,Sichuan,China

会议类型: 国际会议

会议名称: 第八届国际电子测量与仪器学术会议(Proceedings of 2007 8th International Conference on Electronic Measurement & Instruments)

会议地点: 西安

会议语种:英文

在线出版日期: 2007-08-16（万方平台首次上网日期，不代表论文的发表时间）