基于FPGA的数字信号发生器的仿真-实现.docxVIP

PAGE \* MERGEFORMAT38 摘 要 数字信号发生器是数字信号处理中不可缺少的信号源产生设备，在生产生活中具有广泛应用，无论在科研还是教学上，信号发生器都是电子工程师仿真实验的最佳工具。本论文进行基于FPGA的数字信号发生器设计，可以为产生具有高精度、高灵活性的数字信号提供工程基础，具有较高的实际意义。 本文重点对数字信号发生器进行了研究，以FPGA(现成可编程门阵列)为硬件实现平台，采用VHDL硬件描述语言进行开发。数字信号发生器可以产生正弦波、方波、三角波、锯齿波四个独立的波形，并能对所产生的四种波形的频率和幅度进行调节。采用Xinlinx公司的ISE软件进行软件程序开发，进一步在Model Tech公司的仿真工具ModelSim中完成仿真验证。 仿真结果验证了，仿真实现的基于FPGA的数字信号发生器的正确性。 关键词：数字信号发生器；FPGA； DDS；VHDL Abstract Digital signal transmitter as a test facility is an important part of information processing system. In the production of a wide range of application of life. Both in scientific research and in teaching signal generator are the best tool for electronic engineers to simulate experiment.. The research can provide the basis for the digital processing of the signal and play a role in the research field. The main content of this paper is the research on the digital signal generator and the hardware basis of the FPGA (the programmable gate array), the whole project?based on VHDL language,the?digital signal?generator can generate?sine wave , triangle wave,?saw tooth wave?Fang Bo,?four independent?based on the waveform,?and?frequency and amplitude?of?four waveforms?generated by the digital signal?generator?regulator.?The design of the hardware platform?of the system is based on Xinlinxs ISE platform,?completed the first?program is developed?in ISE development environment. The simulation results verify the correctness of the digital signal generator based on FPGA realized by simulation. Key words： Digital Waveform Generator; FPGA;DDS;VHDL 目 录 TOC \o 1-6 \h \z \u HYPERLINK \l _Toc422851217 1 绪论 PAGEREF _Toc422851217 \h 1 HYPERLINK \l _Toc422851218 1.1 课题研究的背景意义 PAGEREF _Toc422851218 \h 1 HYPERLINK \l _Toc422851219 1.2 国内外发展现状 PAGEREF _Toc422851219 \h 2 HYPERLINK \l _Toc422851220 1.3 论文结构 PAGEREF _Toc422851220 \h 4 HYPERLINK \l _Toc422851221 2 数字信号发生器的基础原理 PAGEREF _Toc422851221 \h 5 HYPERLINK \l _Toc422851222 2.1 数字信号发生器 PAGEREF _Toc422851222 \h 5 HYPER