| 基于DDS的LFM信号发生器的FPGA设计 |
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| 引用本文： | 黄飞,鲁迎春,何晓雄.基于DDS的LFM信号发生器的FPGA设计[J].合肥工业大学学报(自然科学版),2006,29(5):617-619. |
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| 作者姓名： | 黄飞 鲁迎春 何晓雄 |
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| 作者单位： | 合肥工业大学,理学院,安徽,合肥,230009 |
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| 摘 要： | 直接数字频率合成技术DDS,在现代雷达信号波形产生中具有重要的地位。文章主要介绍了基于FPGA的DDS设计的基本原理、电路结构和设计优化方法;利用Altera公司Cyclone系列芯片采用线性插值法进行设计实现与仿真,并且很方便地实现线性调频信号(LFM)的产生;它具有较高的频率分辨率、频率转换速度快以及相位噪声低等优点。
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| 关 键 词： | 直接数字频率合成 现场可编程门阵列 线性调频 |
| 文章编号： | 1003-5060(2006)05-0617-03 |
| 修稿时间： | 2005年5月8日 |
Design of the LFM signal generator with FPGA based on DDS |
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| HUANG Fei,LU Ying-chun,HE Xiao-xiong.Design of the LFM signal generator with FPGA based on DDS[J].Journal of Hefei University of Technology(Natural Science),2006,29(5):617-619. |
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| Authors: | HUANG Fei LU Ying-chun HE Xiao-xiong |
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| Abstract: | The technology of direct digital synthesis(DDS) plays an important role in modern radar waveform generation,with which the resolution of frequency is high,the change rate of frequency is rapid and the phase noise is low.In the paper,the principle,circuit diagram and optimization of DDS design based on field programmable gate array(FPGA) are presented.In the design implementation and simulation,the Altera Cyclone FPGA device is utilized and the linear interpolation algorithm adopted,then the linear frequency modulation(LFM) signal can be easily generated. |
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| Keywords: | direct digital synthesis(DDS) field programmable gate array(FPGA) linear frequency modulation(LFM) |
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