| 可重构DDS信号发生器 |
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| 引用本文： | 施帮利,罗爱萍,杨华,韩雪梅.可重构DDS信号发生器[J].西南师范大学学报(自然科学版),2007,32(3):151-155. |
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| 作者姓名： | 施帮利 罗爱萍 杨华 韩雪梅 |
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| 作者单位： | 1. 重庆工学院,电子信息与自动化学院,重庆,400050
2. 西昌学院,经济信息系,四川,西昌,615013 |
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| 摘 要： | DDS专用芯片AD7008为核心的正弦波发生电路和Philips P89C52单片机构成控制电路,可以完成AM,FM,ASK,FSK和PSK等调制电路.使用单片机对DDS的控制使信号产生具有数字可控制性,解决了调制信号的载波频率、调制度和控制方式不能程控的难题,使数字控制产生的正弦信号和调制信号具有极高的稳定性和可靠性.本设计用了易于购买和使用集成芯片,使设计的软硬件简单,极大地提高了性价比.
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| 关 键 词： | DDS芯片 单片机 调制 |
| 文章编号： | 1000-5471（2007）03-0151-05 |
| 修稿时间： | 2006-09-28 |
Reconfigurable DDS Signal Generator |
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| SHI Bang-li,LUO Ai-ping,YANG Hua,HAN Xue-mei.Reconfigurable DDS Signal Generator[J].Journal of Southwest China Normal University(Natural Science),2007,32(3):151-155. |
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| Authors: | SHI Bang-li LUO Ai-ping YANG Hua HAN Xue-mei |
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| Institution: | 1. Electronic Information and Automated Institute, Chongqing Institute of Technology, Chongqing 400050, China ; 2. Dept. of Economy Information, Xichang College, Xichang Sichuan, 615013, China |
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| Abstract: | This design has two modules,sine wave generating circuit cored with DDS chip AD7008 and ma- nipulative circuit composed of Philips P89C52 monolithic integrated circuit,can carry out AM,FM,ASK, FSK and PSK modulating.It made possible for signal generating controlled digitally by DDS controlled by the monolithic integrated circuit.It resolved the puzzel that the carrier wave's frequency,the modulation depth and the controlling mode of modulated signal hard to be controlled by programs.It made the sine wave signal and the modulation signal which generated by digital has the extremely high stability and relia- bility.The design is made of integrated chips which is easy to buy and use so that it has more simplification than before and improved performance price ratio greatly. |
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| Keywords: | DDS chip microcontrollers modulation |
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