A method of amplitude-frequency characteristic compensation about DDS signal source

被引：0

作者：

Liu Ke ^{[1
]}

Tian Shulin ^{[1
]}

Xiao Yindong ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Automat Engn, Chengdu, Sichuan, Peoples R China

来源：

ICEMI 2007: PROCEEDINGS OF 2007 8TH INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT & INSTRUMENTS, VOL IV | 2007年

关键词：

D O I：

暂无

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

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 DAC is compensated; amplitude frequency characteristic of DDS signal is improved. The experiment results indicate dot amplitude flatness of arbitrary waveform generator increases about 2dB at 0Hz-40MHz.

引用

页码：805 / 808

页数：4

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