| 摘要: |
| 基于FPGA和直接数字频率合成（DDS）技术，提出一种以软件方法实现波形信号垂直
偏移量任意可调的信号发生器的设计方案，通过引入除法器、加法器、数据取反
器实现对波形信号的幅度调节和垂直偏移量调节。采用FPGA芯片EP1C12Q240C8实验
验证了该波形信号发生器不需要外加硬件电路就可以实现对输出波形垂直偏移量的任意调节
，且能灵活改变输出波形信号的幅度、相位和频率。 |
| 关键词: 信号发生器 直接数字频率合成 垂直偏移量 |
| DOI： |
|
| 基金项目:桂科攻（10100001-2）；新世纪广西高等教育教改工程项目（20
11JGB003）；广西大学项目（20100103） |
|
| Realization of a signal generator with optionally adjustable vertical offset using FPGA |
| CHEN Lin,PAN Hai-hong,HUANG Guang-yong,LI Jia-heng |
| () |
| Abstract: |
| This paper proposes a software design scheme based on FPGA and Di
rect Digital Synthesizer(DDS) technology to realize a signal generator with
optionally adjustable
vertical offset. In the design
scheme,the divider, adder, and data inversion device are used to achieve t
he adjustment of the waveform amplitude and vertical offset adjustment. The
FPGA chip EP1C12Q240C8 is adopted to realize the proposed scheme.The experiment
results
show that the signal generator can optionally adjust the vertical offset of the
output waveform without additional hardware circuit and
can also flexibly alter the amplitude, phase and frequency of the output wavefor
m signal. |
| Key words: signal generator direct digital synthesizer vertical offset |
