基于Xilinx FPGA IP CORE的可调正弦信号发生器设计  

Design of adjustable sine wave generator based on Xilinx FPGA IP CORE

作　　者：张献伟[1] 任志良[1] 陈光[1] 王华[2] 

机构地区：[1]海军工程大学兵器工程系,武汉430033 [2]海军工程大学船舶与动力学院机械工程系,武汉430033

出　　处：《电子测量技术》2009年第5期1-4,共4页Electronic Measurement Technology

摘　　要：针对传统基于FPGA设计直接数字式频率合成器(DDS)的方法存在的代码量且使用较多的FPGA逻辑资源的不足,本文提出了一种基于Xilinx FPGAIP CORE的DDS设计方法,直接调用已封装好的DDS core,无需编写DDS程序代码,只需熟悉core的接口定义和操作方法。实际应用表明,该方法能够大大提高设计效率且使用较少的FPGA资源,可以实现信号频率、相位和幅度的程序控制,输出信号具有失真度低、稳定度好、分辨率高等优点。To aim at the defect of the traditional methods of Direct Digital Frequency Synthesis （DDS）based on FPGA, which require more program codes and occupy more FPGA resource, A new design method of DDS based on Xilinx FPGA IP CORE is introduced, it directly applies the encapsulated DDS core, and have no requirement of writing DDS program codes but being familiar with the interface definitions and operations of the core. The practical applications show that this method can greatly improve the design efficiency with less FPGA resource and can realizes programmable control of the frequency, phase and amplitude of output wave, meanwhile, the signal has a low distortion, good reliability and high resolution.

关 键 词：FPGA IP CORE VHDL 直接数字式频率合成 正弦波 

分 类 号：TN741[电子电信—电路与系统]