| 基于FPGA的多功能函数发生器 |
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| 引用本文： | 刘琼,景宁波.基于FPGA的多功能函数发生器[J].安徽机电学院学报,2009(2):43-45. |
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| 作者姓名： | 刘琼 景宁波 |
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| 作者单位： | [1]安徽工程科技学院安徽省电气传动与控制重点实验室,安徽芜湖241000 [2]西安科技大学电气与控制工程学院,陕西西安710054 |
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| 摘 要： | 以C8051F040高性能单片机、AD9850和Altera Cyclone EP1C3T144 FPGA为核心,由控制模块、信号产生模块、放大模块、调制模块、键盘及LCD显示等模块组成的系统,实现了频率范围为20 Hz-20 MHz、步进为10 Hz,电压峰-峰值为6Vopp的正弦波信号输出;用FPGA产生的1 kHz的调制信号控制AD603放大器增益实现模拟幅度调制（AM）信号输出;根据调制信号幅度改变AD9850频率控制字实现模拟频率调制（FM）信号输出;用FPGA实现了2ASK和2PSK数字调制信号输出.
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| 关 键 词： | 单片机 信号发生器 调制 频率 |
Sine signal generator |
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| LIU Qiong,JING Ning-bo.Sine signal generator[J].Journal of Anhui Institute of Mechanical and Electrical Engineering,2009(2):43-45. |
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| Authors: | LIU Qiong JING Ning-bo |
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| Affiliation: | 1. Ahui Provincial Key Laboratory of Electric and control, Anhui University of Technology and Science, AnhWuhu, china, 241000; 2. The Automation Department of Xi＇an University of Science and Technology, Xi＇an 710054, China) |
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| Abstract: | The core of this system is composed by high performance microcontroller C8051F040, AD9850 and Ahera Cyclone EP1C3T144 FPGA, including control module, signal generating module, amplifying module, modulating module, keyboard, LCD and so on. Sine signal can be generated by this system. The which frequency range is 20 Hz-20 MHz, step is 10Hz and peak to peak voltage is 6 Vopp. Signal output of simulation amplitude modulation （AM） is realized by the amplifier AD603, whose gain is controlled by lkHz modulating signal which generated by FPGA. According to the amplitude of modulating signal, the frequency control word of AD9850 can be changed. Consequently, the signal output of simulalion frequency modulation （FM） is realized. Output of 2 ASK and 2 PSK digital modulation signal is realized by FPGA. |
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| Keywords: | microcontroller signal generator modulation frequency |
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