摘要
介绍了利用现场可编程逻辑门阵列FPGA实现直接数字频率合成(DDS)的原理、电路结构、优化方法等。重点介绍DDS技术在FPGA中的实现方法,给出了部分VHDL源程序。FPGA采用ALTERA公司的ACEX系列芯片EP 1K 30TC 144。采用该方法设计的DDS系统可以很容易地嵌入到其他系统中而不用外接专用DDS芯片,具有高性能、高性价比,电路结构简单等特点。
The article introduces the principle, the circuit diagram and the optimization method of realization DDS based on FPGA. The importance of how to realize DDS through FPGA is introduced,and some VHDL source procedure is given. The chip adopts the ACEX series EP1K30TC - 144 that is made in the Altera. Above all, this DDS system possesses some characteristics including high performance,high proportion between price and performance and simple circuit diagram,and so on. It can be embedded into other system easily without special DDS chip.
出处
《现代电子技术》
2005年第20期6-7,9,共3页
Modern Electronics Technique
